RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.

    Source document

    docs/rpo/gmc/sierra-gmt800.md

    Interactive view →

    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Sierra — GMT800 (1999–2007) page.

    GMC Sierra — GMT800 (1999–2007)

    This is the GMC Sierra of the GMT800 generation, the 1500 and 2500 pickups that Wikipedia says were built with the Chevrolet Silverado from the 1999 model year to 2007; NICB's 2000, 2003 and 2007 VIN manuals list the Sierra, and GM's 2007 lists call the truck the Sierra Classic. Every row comes from GM's service RPO lists for the C Sierra 2WD and K Sierra 4WD (1999–2006), the Sierra Denali (2003–2006), the 2007 Sierra Classic 2WD and 4WD, and the natural gas and propane supplement lists of 2001–2006. These lists are word for word the Chevrolet Silverado's in the same years, and the C and K Sierra lists are word for word each other's (and the Denali's), so the rows follow the Silverado GMT800 doc; its 2005–2007 lists hold a light-duty half and a heavy-duty half, and the notes say when a code is only in the heavy-duty half. The 2500HD and 3500 codes L18, LB7, LLY, LBZ, M74, MW7 and ML6 are left to sierra-hd-gmt800, and codes whose wording names Chevrolet, Cadillac or the utility body are left out. No listed source gives the Sierra's paint or interior trim codes (the lists give only the paint scheme and special color codes), and the Sierra-only packages are the Hot Truck (HOT, 2001–2007) and the Professional (PR0, 2002–2004) appearance packages and the Sierra SL nameplate (SSL, 2004).

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    L31 Engine, 5.7L V8 (Vortec 5700), CPI 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    L33 Engine, 5.3L V8 high output, aluminum block 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    L35 Engine, 4.3L V6 (Vortec 4300), CPI 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    L59 Engine, 5.3L V8 flexible fuel (gasoline/E85) 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    LM7 Engine, 5.3L V8 (Vortec 5300), iron block 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    LQ4 Engine, 6.0L V8 (Vortec 6000), iron block 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    LQ9 Engine, 6.0L V8 high output (Vortec HO 6000), iron block 2002, 2004–2007 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    LR4 Engine, 4.8L V8 (Vortec 4800), iron block 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    LU3 Engine, 4.3L V6 (Vortec 4300), MFI 2002–2007 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed

    Transmissions

    Code Description Years Models/Notes Confidence
    M30 Transmission, 4-speed automatic, Hydra-Matic 4L60-E 1999–2007 the 2001 list prints MW3's 5-speed manual wording against M30 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    M32 Transmission, 4-speed automatic, Hydra-Matic 4L60-E, heavy-duty 2001–2007 the 2001–2002 lists word it as the light-duty 4L60-E ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    M33 Transmission, 4-speed automatic, Hydra-Matic 4L60-E, hybrid 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    M70 Transmission, 4-speed automatic, Hydra-Matic 4L70-E 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    M96 Transmission, 5-speed manual, Tremec 109 mm, 5.81 first gear 2003, 2005–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    MG5 Transmission, 5-speed manual, light-duty 1999–2007 1999–2000 lists: New Venture Gear, 4.02 first gear; 2001–2007 lists: Getrag 84 mm, 4.00 first gear ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    MT1 Transmission, 4-speed automatic, heavy-duty, Hydra-Matic 4L80-E 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    MW3 Transmission, 5-speed manual, New Venture Gear 109 mm, 5.61 first gear 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP1 Transfer case, electric shift, 2-speed 2000–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP2 Transfer case, manual shift, 2-speed 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP3 Transfer case, all-wheel drive 2000–2001, 2003–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP8 Transfer case, active (Autotrac), 2-speed, push-button control 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NR4 Transfer case, 4WD, open differential, 2-speed 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    TZ0 Transmission, 5-speed manual, Tremec 85 mm, 3.82 first gear 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed

    Axles

    Code Description Years Models/Notes Confidence
    G80 Rear axle, locking differential 1999–2007 the 2001–2007 lists word it as a Positraction limited-slip axle ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    G86 Rear axle, limited-slip differential 2002–2005 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    GH0 Rear axle ratio 3.54 2000 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    GT4 Rear axle ratio 3.73 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    GT5 Rear axle ratio 4.10 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    GTY Rear axle, wide track 2000–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    GU4 Rear axle ratio 3.08 1999–2001, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    GU5 Rear axle ratio 3.23 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    GU6 Rear axle ratio 3.42 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    HC4 Rear axle ratio 4.65 2000 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    R04 Rear wheels, single 2000 the 2000 service lists print it RO4 (letter O) ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    R05 Rear wheels, dual 2000 the 2000 service lists print it Ro5 (letter O); the 1999–2000 JH7 entries cite it as R05 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YD7 Axle (with dual rear wheels R05) for GVW plate scheduling 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed

    Packages & Trims

    Code Description Years Models/Notes Confidence
    B2E Sales package, spring special 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B4U Performance package, sport 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B4V Performance package, high output engine 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    HOT Appearance package, GMC Hot Truck 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NHT Enhanced towing performance package 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NZZ Skid plate package (off-road) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PR0 Appearance package, Sierra Professional 2002–2004 the 2003–2004 lists print PRO (letter O); the 2002 list prints PR0 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    U42 Rear seat entertainment package 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V10 Cold climate package 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VYU Snow plow prep package 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    WT1 Exterior appearance package 1 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    X81 Price leader pickup package 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    Y91 Luxury Edition package 2001, 2003–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    YE9 Comfort and decor level 3 (uplevel decor) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    YF2 Ambulance upfitter package 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    YF7 Upfitter package 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    Z60 High-performance chassis package 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z71 Off-road chassis package (Z71) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z83 Solid smooth ride suspension package 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z85 Handling/trailering (increased capacity) suspension package 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ZE5 Trim level, base (export) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZM9 Features enhancement package 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZQ1 Smooth ride chassis package 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZW7 Premium smooth ride chassis package 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZX3 Selectable ride control (manual select damping) suspension package 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed

    Equipment

    Code Description Years Models/Notes Confidence
    2GA Tire, front (SEO): P245/75R16 109S, all-terrain, blackwall 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    3GA Tire, rear (SEO): P245/75R16 109S, all-terrain, blackwall 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    4GA Tire, spare (SEO): P245/75R16 109S, all-terrain, blackwall 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5B5 Power windows and mirrors (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5G4 Provisions for cab roof-mounted lamp (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5GA Tires, all (SEO): P245/75R16 109S, all-terrain, blackwall 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5M5 Transmission equipment, manual (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5S3 Engine equipment, 4.3L V6 (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5T5 Seat override (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5V1 Spare wheel carrier without tire (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5X7 Provisions for body-mounted warning lamp (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5X9 Provisions, wrecker preparation (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    5Y0 Wiring provisions for body-builder emergency lamp (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    6C7 Dome / reading lamps, passenger (roof console with reading lamps) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    6E2 Single-key lock cylinders, coded DF81 (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    6E8 Single-key lock cylinders, coded NU97 (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    7T6 Fuel line take-off fitting (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    7Y9 Battery, single 770 CCA (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    7Z1 Horn, high note (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8A7 Alternator, 130 amp (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8B0 Batteries, 770 CCA and 600 CCA (dual) (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8E8 Bumper, front, painted black (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8E9 Bumper, front, painted white (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8F6 Exterior ornamentation, uplevel, shipped loose (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8G9 Mirrors, outside, wide-loop, stainless steel (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8S3 Back-up alarm, 97 dB (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8S8 Wiring provisions, odometer security (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8T7 Front axle half-shaft protective boot/cover (4WD) (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8X5 Alternators, dual 105 amp (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8Y8 Batteries, dual 600 CCA (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    8Y9 Batteries, dual 770 CCA (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    9F8 Mirrors, outside, wide load, large (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    9L4 Power supply, 12-volt (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    9N8 Mirrors, auxiliary outside spot, 6 in convex, stainless steel (SEO) 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    9P2 Air conditioning, rear, with auxiliary heater (SEO) 2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    A04 Windshield, tinted, without upper shadeband 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    A28 Window, rear, sliding 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    A31 Windows, power 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    A95 Seats, front buckets, high back, reclining 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AC6 Glass, deep tint, rear side doors 2003 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AC7 Fuel tank fill pipe vent, unrestricted 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AE7 Seats, front 40/20/40 split bench 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AG1 Seat adjuster, power, driver (6-way) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AG2 Seat adjuster, power, passenger (6-way) 1999–2007 the 1999 list repeats AG1's driver wording; 2000 and later lists give the passenger seat ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AJ1 Glass, deep tint (all windows except windshield and front doors) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AK6 Air bag delete (international, CKD only) 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AL0 Passenger presence / child presence sensor (front passenger air bag) 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AL4 Seats, rear, two buckets 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AM7 Seat, rear, folding 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AN2 Child seat, integral 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AN3 Seats, front, full-feature individual seats 1999–2007 2001–2007 lists word it as individual (non-bucket) seats ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ANJ Glass, tinted, non-deep (export, E-marked) 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AT5 Seat, rear, folding center/second seat 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AU0 Keyless entry, remote 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AU3 Door locks, power 1999–2001, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    AU8 Remote function actuation, specific frequency 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    AX4 Seats and restraints, European conversion 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B30 Floor covering, carpet 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B32 Floor mats, front, auxiliary 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B33 Floor mats, rear, auxiliary 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B34 Floor mats, front, carpeted insert 1999–2000, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B35 Floor mats, rear, carpeted insert 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B37 Floor mats, front and rear (intermediate), auxiliary 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B39 Floor covering, carpeted load floor / cargo mat 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B58 Floor mats, front and rear, carpeted insert 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B71 Wheel opening flares 1999–2001, 2003–2007 the 1999–2001 lists word it as wheel opening flares; the 2003–2007 lists as molding, wheel opening, colored ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B74 Wheel opening flares, extra wide 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B81 Moldings, bodyside, delete 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B82 Exterior emblem, delete 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B85 Moldings, bodyside, bright 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    B96 Moldings, wheel opening 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BA5 Exterior ornamentation, custom 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    BD2 Exterior ornamentation, delete 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BG9 Floor covering, rubber 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    BNB Exterior trim, paintable (international) 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BS1 Acoustical insulation package 2001, 2004–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    BVE Running boards / assist steps, chrome tubular 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BVF Running boards, color-keyed 2001–2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BVS Running boards / assist steps, color (black) 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BW1 Exterior ornamentation, rear end 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BW2 Moldings, bodyside, deluxe 2001, 2003–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C25 Rear window wiper, intermittent 2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C36 Heater, auxiliary 2001–2002 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C3J GVW rating, 6,700 lb 2003–2004 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C42 Heater, outside air, deluxe 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C49 Defogger, rear window, electric 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C4M GVW rating, 9,900 lb 2004–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C52 GVW rating, 7,200 lb 2000 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C5F GVW rating, 8,500 lb 2001–2005 2005: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C5H GVW rating, 6,900 lb 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C5M GVW rating, 6,100 lb 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C5P GVW rating, 6,250 lb 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C5Q GVW rating, 6,300 lb 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C5S GVW rating, 6,600 lb 1999–2000, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C5U GVW rating, 6,800 lb 1999–2002, 2004–2005 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C5W GVW rating, 7,000 lb 2001, 2005–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C5Z GVW rating, 7,200 lb 2001, 2003–2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C60 Air conditioning, front, manual controls 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C68 Air conditioning, front, automatic electronic climate control 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C69 Air conditioning, rear 2000–2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C6P GVW rating, 8,600 lb 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C6U GVW rating, 9,000 lb 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C6W GVW rating, 9,200 lb 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C6Y GVW rating, 9,600 lb 2006–2007 only in: heavy-duty models (GM’s HD list: 1500HD, 2500HD, 3500) ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C7A GVW rating, 10,000 lb 1999–2000 the 1999 list also prints C7A against 11,000 lb; the 2000 list gives 11,000 lb as C7E ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C7E GVW rating, 11,000 lb 2000 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C7H GVW rating, 6,400 lb 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C7K GVW rating, 6,500 lb 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C7L GVW rating, 12,000 lb 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C7W GVW rating, 11,400 lb 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    C85 Fog lamps, suppressed when headlamps are on (export) 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    C86 Manual transmission shift indicator lamp (tell-tale) suppression 2001, 2003–2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CF5 Sunroof, power, sliding glass 1999–2003, 2005–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    CJ2 Air conditioning, dual-zone automatic 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    CJ3 Air conditioning, dual-zone manual 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    D07 Console, floor, front compartment (custom) 1999–2001, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    D31 Mirror, inside rearview, tilt 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    D44 Mirrors, outside, base (color/black) 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    D45 Mirrors, outside, chrome gooseneck style 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    D48 Mirrors, outside, power remote control 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    D55 Console, floor, seat separator 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DD7 Mirror, inside rearview, electrochromic auto-dimming with compass 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DE2 Mirrors, outside, manual, folding 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DF2 Mirrors, outside, wide load (camper style), folding, stainless steel 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DF5 Mirror, inside rearview, auto-dimming with compass and outside temperature display 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DG5 Mirrors, outside, wide load, large (West Coast style) 1999–2007 2005–2007: heavy-duty models only (GM’s HD list); the 1999 list repeats DF5's temperature-readout wording for DG5 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DH2 Sunshades with illuminated vanity mirrors (dual sunshade) 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DH6 Sunshades with illuminated vanity mirrors, driver and passenger 1999–2000, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DJ5 Mirror, outside, electrochromic 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DK2 Mirrors, outside, power, heated, color 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DK6 Console, overhead (bucket seat, long) 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DK7 Console, overhead (custom) 2000–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DK8 Console, overhead (deluxe) 2001, 2005–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DL3 Mirrors, outside, power, heated, power folding, turn signal, driver auto-dimming 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DL8 Mirrors, outside, power, heated 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DNH Storage box, rear underseat 2005–2007 2005: heavy-duty models only (GM’s HD list); the 2006–2007 lists misprint Rear as Right ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DP1 Mirror provisions, convex glass 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DPF Mirrors, outside, wide load (camper style), power, heated 2003–2005 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DPN Mirrors, outside, wide load, vertical glass, manual extending and folding, heated, power, turn signal 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    DR2 Mirrors, outside, power, heated, auto-dimming, manual folding 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DT4 Ashtray and cigarette lighter 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    E35 Pickup box, steel (optional) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    E36 Pickup box, composite, light color 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    E37 Pickup box, composite inner, dark color 1999, 2001–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    E62 Pickup box, Sportside (Step Side) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    E63 Pickup box, Fleetside (Wideside) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    E95 Tonneau cover 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    EN6 Tonneau cover, hard, folding 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    EQ9 Underride protection equipment 2000–2001, 2005–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ESC Individual front seats with floor console provisions 2003–2004 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    F44 Chassis, heavy-duty 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    F60 Springs, front, heavy-duty (increased torsion bar rate) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    FF4 Torsion bar adjuster, left (C) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FF5 Torsion bar adjuster, right (D) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FF6 Torsion bar adjuster, left (E) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FF7 Torsion bar adjuster, right (F) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FF8 Torsion bar adjuster, left (G) 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FF9 Torsion bar adjuster, right (H) 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FK2 Torsion bar adjuster, left (A) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FK3 Torsion bar adjuster, right (B) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FNF Power take-off (PTO) provisions, front 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FRL Springs, increased rate (provisions) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FT2 Torsion bar adjuster, left (FT2) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FT3 Torsion bar adjuster, right (FT3) 2002, 2004 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FW1 Ride and handling, manual electric control 2000–2004 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    G63 Provisions, roof luggage carrier 2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    G65 Level control, manual, self-adjusting 2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    G69 Level control, automatic air, heavy-duty 2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    GEC GVW rating, 9,800 lb 2006–2007 only in: heavy-duty models (GM’s HD list: 1500HD, 2500HD, 3500) ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    HP2 Hybrid propulsion system, electric, parallel (14V/42V, 120V outlets, idle engine stop) 2004–2007 2005–2007 lists word it as AHS2 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    HVY Identification, 2 in body raise (HD model) 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    J81 Fog lamp / indicator switch, export 1999–2003 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JB8 Brakes, hydroboost (export) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JC3 Brakes, vacuum power, 4-wheel disc, 6,400 lb 2003–2005 2005: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JC4 Brakes, vacuum power, 4-wheel disc, 7,200 lb 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JC5 Brakes, vacuum power, 4-wheel disc, 7,200 lb 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JE1 Brake system, Europe 2002 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JF3 Brakes, vacuum power, 17 in disc/drum with ABS, 7,000 lb 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JF4 Brakes, vacuum power, 17 in disc/drum with ABS, 6,400 lb 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JF7 Brakes, vacuum power, 17 in disc/drum with ABS, 6,400 lb 2005 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JH1 Brakes, hydraulic power, 4-wheel disc, 6,400 lb 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JH5 Brakes, hydraulic (hydroboost) power, 4-wheel disc, 7,200 lb 1999, 2001–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JH6 Brakes, hydraulic power, 4-wheel disc, 9,900 lb 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JH7 Brakes, hydraulic power, 4-wheel disc, 12,000–12,300 lb 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list); 1999–2000 lists tie it to dual rear wheels (R05); 2003–2007 lists give 12,300 lb ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    JL4 Active brake control 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JVA Antilock brakes, delete 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    K05 Engine block heater 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    K18 Air injection reactor (AIR) pump, electric 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    K34 Cruise control 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    K47 Air cleaner, high-capacity 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    K53 Fuel sender, robust fuel system (international) 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    K65 Alternators, dual 105 amp 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    K68 Alternator, 105 amp 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KC4 Engine oil cooler, heavy-duty 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KC5 Accessory electrical receptacle 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    KC6 Provisions, accessory device 2000 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    KG3 Alternator, 145 amp 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KG8 Alternator, 130 amp 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    KL5 Engine modification, natural gas (conversion-ready engine) 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KL6 Provisions, natural gas 2001–2006 2005: heavy-duty models only (GM’s HD list); the CNG/LPG supplement lists (2001–2006) word it as a bi-fuel CNG gaseous fuel package; 2001–2002, 2006 only in those lists ⛭ GM factory document — 2001 gmc gmc c sierra 2wd cng rpo code list, p.1 · 2006 gmc gmc c sierra 2wd cng rpo code list, p.1 confirmed
    KL7 Conversion, propane (LPG) 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    KL8 Conversion, natural gas (CNG) 2001–2006 2005: heavy-duty models only (GM’s HD list); the 2001 list says propane but marks it CNG; KL7 is the propane conversion; the CNG/LPG supplement lists (2001–2006) word it as a dedicated CNG gaseous fuel package; 2002, 2006 only in those lists ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2006 gmc gmc c sierra 2wd cng rpo code list, p.1 confirmed
    KNP Transmission oil cooler, heavy-duty (auxiliary) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KUP Throttle control, electronic 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KW1 Alternator, 160 amp 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    KXB Alternators, dual 100 amp 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    M1F Power take-off (PTO) provisions, rear 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    MTF Provisions, fire extinguisher mounting 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    N05 Fuel filler cap, locking 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    N12 Exhaust, rear exit 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    N88 Wheels, 17 x 7.5 aluminum, premium 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    N93 Wheels, 17 x 7.5 aluminum 2000–2001, 2003–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NK5 Steering wheel, standard 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP5 Steering wheel, leather-wrapped 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NP7 Steering column, EEC approved 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NPL Nameplate, delete 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NQY Fuel tank, auxiliary, rear-mounted, 20 gallon 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NQZ Fuel tank, auxiliary, rear-mounted, 18 gallon, delete 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NW7 Traction control 2000–2007 2003–2007 lists: powertrain management only ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NYS Four-wheel steering (Quadrasteer) 2002–2005 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    P03 Wheel covers / hub caps, bright 1999–2001, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    P06 Wheel trim rings with bright hub caps 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list); the 1999–2001 lists word it as bright rally trim rings with bright hub caps, the 2003–2007 lists as wheel trim discs ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    P25 Wheels, 17 x 7.5 aluminum, premium 5-spoke 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    P27 Wheels, 17 x 7.5 aluminum, premium 6-spoke 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    P30 Wheels, 20 x 8.5 aluminum, sport 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    P35 Wheels, 20 x 8.5 chrome 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PF4 Wheels, 16 x 7 aluminum 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PF9 Wheels, 16 x 7 cast aluminum 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PPB Pickup box extender 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    PTO Engine controls for power take-off (PTO) 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PUB Pickup box rail caps / protectors 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    PY0 Wheels, 16 x 6.5 aluminum 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PY2 Wheels, 16 x 6.5 chrome appearance 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    PY9 Wheels, 17 x 7.5 chrome appearance 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Q4B GVW rating, 6,200 lb 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QAN Tires, all: P265/70R17 113S, all-season, blackwall 2000–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QAQ Tires, all: P265/70R17 113H, all-season, blackwall 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QBL Tires, all: P265/70R17 113H, on/off-road, blackwall 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QBN Tires, all: LT245/75R16C, on/off-road, blackwall 1999–2003 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QBX Tires, all: LT245/75R16C, on/off-road, white outline lettered 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QC1 Wheels, 16 x 7 steel 2004–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QC3 Wheels, 16 x 7 aluminum, special 1999–2003 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QC4 Wheels, 16 x 7 aluminum, custom 2003–2004 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QC5 Wheels, 17 x 7 aluminum 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QCC Tires, all: P255/70R16, all-season, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QCJ Tires, all: P255/70R16, all-season, white outline lettered 1999, 2001–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QCP Tires, all: P255/70R16 109H, all-season, blackwall 2001–2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QE4 Wheel, spare, 16 x 6.5 aluminum 1999–2001, 2004–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QER Tires, all: LT265/75R16E, on/off-road, blackwall 2004–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QF7 Wheels, 17 x 7.5 aluminum, deluxe 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QGA Tires, all: P245/75R16 109S, all-terrain, blackwall 1999–2002 the 1999 list prints P255/75R16, a size the later lists do not use ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QGB Tires, all: P245/75R16 109S, all-terrain, white outline lettered 1999–2002 the 2001 list prints P265/75R16 109S; 1999–2000 and 2002 give P245/75R16 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QGC Tires, all: P265/75R16 114S, all-terrain, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QGD Tires, all: P265/75R16 114S, all-terrain, white outline lettered 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QHP Tires, all: LT225/75R16D, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QHS Tires, all: P265/75R16 114H, temperature grade A, all-terrain, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QHT Tires, all: P265/75R16 114S, temperature grade A, all-terrain, white outline lettered 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QIW Tires, all: LT245/75R16E 120Q, on/off-road, blackwall 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QIX Tires, all: LT265/75R16C 120Q, on/off-road, blackwall 2001, 2003 the 2003 list prints LT245/75R16C (265 is the reading in the corpus majority) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QIZ Tires, all: LT245/75R16E 120Q, all-season, blackwall 1999–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QJM Tires, all: P265/70R17 113S, on/off-road, white outline lettered 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QJP Tires, all: P265/70R17 113S, on/off-road, blackwall 2001–2002, 2004–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QLP Tires, all: LT245/75R16E 120/116S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QMG Tires, all: P245/75R16 112S extra load, all-season, blackwall 1999–2000 the 1999 list's QMG and QMH lines read one code down (WOL, then P265/70R16); its front/rear/spare codes XMG, YMG and ZMG match the 2000 reading ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QMH Tires, all: P245/75R16 112S extra load, all-season, white outline lettered 1999–2000 see QMG: the 1999 list prints P265/70R16 AL2 against QMH ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QMJ Tires, all: P265/70R16 111S, all-season, blackwall 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QMK Tires, all: P265/70R16 111S, all-season, white outline lettered 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    QNF Tires, all: P235/75R16 106S, all-season, blackwall 1999–2002, 2004–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QNG Tires, all: P235/75R16 106S, all-season, white outline lettered 1999–2002, 2004–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QNK Tires, all: P245/75R16 109S, all-season, blackwall 1999–2002, 2004–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QNL Tires, all: P245/75R16 109S, all-season, white outline lettered 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QNM Tires, all: P245/70R17 108H, all-season, blackwall 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QPO Tires, all: P245/70R17 108S, all-season, white outline lettered 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QPR Tires, all: P245/70R17 108S, all-season, blackwall 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QR9 Wheels, 20 x 8.5 cast aluminum, chromed, 5-spoke 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QS8 Wheels, 20 x 8.5 cast aluminum, chromed, 7-spoke 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QSS Tires, all: P275/55R20 111S, all-season, blackwall 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QVL Tires, all: P265/70R17 113S, all-season, blackwall 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QVM Tires, all: P265/70R17 113S, all-season, white outline lettered 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    QXR Tires, all: LT245/70R17C, all-terrain, blackwall 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    R4W Tire brand, all Michelin 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    R4Y Tire brand, all Goodyear 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    R5C Tire brand, all Bridgestone 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    SAF Spare tire lock 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    SRW Chassis, single rear wheel ride and handling 2004–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    SSL Ornamentation, exterior, nameplate, GMC Sierra SL 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T07 Alternator, delete 2004–2007 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T2H Exterior ornamentation, export requirements 2001, 2003–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T2J Interior ornamentation, export requirements 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T62 Daytime running lamps, delete 1999–2000, 2002–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T64 Battery, delete 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T65 Daytime running lamps, export (European) 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T74 Headlamp control, automatic with delay 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T78 Headlamp control (automatic), delete 1999, 2002–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T79 Fog lamp, rear 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T84 Headlamps, right-hand rule of road, E-marked (export) 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T89 Tail and stop lamps, export 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T90 Signal and marker lamps (export) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T96 Fog lamps, front 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T9H Provisions, front fog lamps 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    TL1 Grille, special 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TP2 Battery, auxiliary (dual battery provisions) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TQ3 Batteries, dual 770 CCA 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TR2 Turn signal lamps, side repeater / enlarged (export) 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    TR3 Grille, body color with chrome emblem / chrome surround 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TR6 Headlamp leveling, manual 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    TRB Provisions, roof-mounted lamp 2001 the 2001 list gives TRB the same wording as TRW; the 2002–2007 lists use TRB for a body-color grille ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    TRB Grille, body color 2002, 2004–2007 the 2001 list prints another wording (see the 2001 row) ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TRW Provisions for roof-mounted (emergency) lamps 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TS9 High-mounted stop lamp, delete 1999–2000, 2004–2005 2005: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    U01 Roof marker lamps (five) 2000–2001, 2003–2007 the 2000–2001 lists print it with a letter O (UO1) ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    U19 Speedometer, kilometers and miles, kilometer odometer 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    U1S Multiple CD player (changer) 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    U1Z Multiple CD player (changer), passenger compartment 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    U2J XM Satellite Radio (S-band), not installed 2006–2007 ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    U2K XM Satellite Radio (S-band digital audio) 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    U2L Digital audio system, L-band 2003 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    U34 Temperature display, Celsius 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    U68 Driver information center (trip computer) 2000–2001 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UB0 Radio, AM/FM stereo, CD, auto tone control, RDS, clock 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UB1 Radio, AM/FM stereo, cassette and CD, auto tone control, RDS, clock 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UB2 Radio, AM/FM stereo, cassette and multiple-CD changer, auto tone control, clock 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UB8 Horn, high note 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UC2 Speedometer, kilometers and miles, kilometer odometer, positive bias (European) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UC6 Radio, AM/FM stereo, 6-disc CD changer, RDS, auto tone control, clock 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UD4 Vehicle speed alarm, 120 km/h (overspeed warning) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UD7 Rear parking assist 2002 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UE1 OnStar communication system (GPS) 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UG1 Universal garage door opener (HomeLink) 1999–2001, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UJ6 Low tire pressure indicator 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UK3 Steering wheel radio (accessory) controls 2001, 2003–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UK6 Rear seat radio controls with earphone jacks 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UL0 Radio, AM/FM stereo with cassette (European) 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UL1 Radio, AM/FM stereo, seek/scan, clock (European frequencies) 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UL2 Radio frequencies, European 1999–2001, 2003, 2005–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UL4 Radio frequencies, South American 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UL5 Radio, delete 1999–2000, 2003–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UL8 Radio frequencies, Saudi Arabian 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UL9 Radio, AM/FM stereo, cassette and CD, auto tone control, clock, Bose 2001–2002 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UM6 Radio, AM/FM stereo, seek/scan, auto-reverse cassette, clock 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UM7 Radio, AM/FM stereo, seek/scan, clock (base) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UN0 Radio, AM/FM stereo, seek/scan, CD, auto tone control, clock 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UP0 Radio, AM/FM stereo, seek/scan, cassette and CD, auto tone control, clock 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UQ3 Speaker system, performance (enhanced audio) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UQ5 Speaker system, base (four speakers) 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UQ7 Speaker system, premium, Bose 2000–2007 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UQ9 Speaker system, delete 2003–2007 ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UV8 Cellular phone provisions (wiring) 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UW3 Radio, AM/FM stereo with Radio Data System (RDS), cassette 1999–2002 the 1999–2000 lists word it as an RDS feature with European frequencies ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    UY2 Wiring provisions, camper and fifth-wheel trailer 1999–2007 the 2005 lists give UY2 a second wording (see the disputed row) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    UY2 Power and signal distribution, power outlets 2005 the 2005 lists print this wording beside the camper and fifth-wheel trailer wiring entry ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 disputed
    UY7 Wiring harness, trailer, heavy-duty 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    V08 Cooling, heavy-duty 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    V22 Grille, chrome 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V43 Bumper, rear step, painted 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V53 Luggage carrier, roof 2000–2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    V54 Luggage carrier, roof-mounted 2000–2001 in GM's shared truck and utility list only; no source ties it to the Sierra pickup ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    V76 Tow hooks, front 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V92 Trailer provisions 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VB3 Bumper, rear step, chrome with impact strip 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VB5 Bumper, front, color 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VCG Provisions, international switch/control symbols 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VF1 Bumper, front, painted steel, primed 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VF3 Bumper, rear, painted steel, primed 2005–2007 ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VF7 Bumper, rear step, delete 1999–2000, 2002–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VFF Video format, region 1 NTSC 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VFJ Video format, region 2 PAL 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VFM Video format, region 4 NTSC 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VFP Video format, region 5 PAL 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VG3 Bumper, front, chrome with impact strip 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VK3 Front license plate mounting package 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VP6 Noise control 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VR4 Trailer hitch, weight-distributing platform 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VR7 Tow hook, second, rear (recovery) 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VSP Pickup box, dual rear wheels 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VT4 Bumper, front, color-keyed 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VT5 Bumper, rear, color-keyed 2001–2007 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    XAN Tire, front: P265/70R17 113S, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XAQ Tire, front: P265/70R17 113H, all-season, blackwall 2002 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XBN Tire, front: LT245/75R16C, on/off-road, blackwall 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XBX Tire, front: LT245/75R16C, on/off-road, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XCC Tire, front: P255/70R16, all-season, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XCJ Tire, front: P255/70R16, all-season, white outline lettered 1999, 2001–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XCP Tire, front: P255/70R16 109H, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XEC Tire, front: LT215/85R16E, highway, blackwall 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    XEF Tire, front: LT215/85R16E, on/off-road, blackwall 2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    XER Tire, front: LT265/75R16E, on/off-road, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGA Tire, front: P245/75R16 109S, all-terrain, blackwall 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGB Tire, front: P245/75R16 109S, all-terrain, white outline lettered 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGC Tire, front: P265/75R16 114S, all-terrain, blackwall 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGD Tire, front: P265/75R16 114S, all-terrain, white outline lettered 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGK Tire, front: LT245/75R16E 120Q, on/off-road, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XGL Tire, front: LT265/75R16C, on/off-road, blackwall 2000–2002 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XHH Tire, front: LT245/75R16E 120Q, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XHP Tire, front: LT225/75R16D, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XHS Tire, front: P265/75R16 114H, temperature grade A, all-terrain, blackwall 1999–2002, 2004 the 1999–2000 lists print 114S, the 2001 and later lists 114H ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XHT Tire, front: P265/75R16 114S, temperature grade A, all-terrain, white outline lettered 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XIW Tire, front: LT245/75R16E, on/off-road, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XIZ Tire, front: LT245/75R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XJM Tire, front: P265/70R17 113S, on/off-road, white outline lettered 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XJP Tire, front: P265/70R17 113S, on/off-road, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XLP Tire, front: LT245/75R16E 120/116S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XMG Tire, front: P245/75R16 112S extra load, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XMH Tire, front: P245/75R16 112S extra load, all-season, white outline lettered 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XMJ Tire, front: P265/70R16 111S, all-season, blackwall 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XMK Tire, front: P265/70R16 111S, all-season, white outline lettered 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XNF Tire, front: P235/75R16 106S, all-season, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XNG Tire, front: P235/75R16 106S, all-season, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XNK Tire, front: P245/75R16 109S, all-season, blackwall 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XNL Tire, front: P245/75R16 109S, all-season, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XSS Tire, front: P275/55R20 111S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XVL Tire, front: P265/70R17 113S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XVM Tire, front: P265/70R17 113S, all-season, white outline lettered 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    XYK Tire, front: LT215/85R16D, highway, blackwall 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    XYL Tire, front: LT215/85R16D, on/off-road, blackwall 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    XYN Tire, front: LT235/85R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YAN Tire, rear: P265/70R17 113S, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YAQ Tire, rear: P265/70R17 113H, all-season, blackwall 2002 ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YB3 Clutch driven plate, delete 1999–2000, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    YBN Tire, rear: LT245/75R16C, on/off-road, blackwall 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YBX Tire, rear: LT245/75R16C, on/off-road, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YCC Tire, rear: P255/70R16, all-season, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YCJ Tire, rear: P255/70R16, all-season, white outline lettered 1999, 2001–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YCP Tire, rear: P255/70R16 109H, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YD6 Spring, rear, base equipment 2001 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YEC Tire, rear: LT215/85R16E, highway, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YEF Tire, rear: LT215/85R16E, on/off-road, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YER Tire, rear: LT265/75R16E, on/off-road, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGA Tire, rear: P245/75R16 109S, all-terrain, blackwall 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGB Tire, rear: P245/75R16 109S, all-terrain, white outline lettered 1999–2002 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGC Tire, rear: P265/75R16 114S, all-terrain, blackwall 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGD Tire, rear: P265/75R16 114S, all-terrain, white outline lettered 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGK Tire, rear: LT245/75R16E 120Q, on/off-road, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YGL Tire, rear: LT265/75R16C, on/off-road, blackwall 2000–2002 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YHH Tire, rear: LT245/75R16E 120Q, all-season, blackwall 2001–2002, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YHP Tire, rear: LT225/75R16D, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YHS Tire, rear: P265/75R16 114H, temperature grade A, all-terrain, blackwall 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YHT Tire, rear: P265/75R16 114S, temperature grade A, all-terrain, white outline lettered 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YIW Tire, rear: LT245/75R16E, on/off-road, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YIZ Tire, rear: LT245/75R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YJM Tire, rear: P265/70R17 113S, on/off-road, white outline lettered 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YJP Tire, rear: P265/70R17 113S, on/off-road, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YLP Tire, rear: LT245/75R16E 120Q, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YMG Tire, rear: P245/75R16 112S extra load, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YMH Tire, rear: P245/75R16 112S extra load, all-season, white outline lettered 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YMJ Tire, rear: P265/70R16 111S, all-season, blackwall 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YMK Tire, rear: P265/70R16 111S, all-season, white outline lettered 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YNF Tire, rear: P235/75R16 106S, all-season, blackwall 1999–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YNG Tire, rear: P235/75R16 106S, all-season, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YNK Tire, rear: P245/75R16 109S, all-season, blackwall 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YNL Tire, rear: P245/75R16 109S, all-season, white outline lettered 1999–2002, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YSS Tire, rear: P275/55R20 111S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YVL Tire, rear: P265/70R17 113S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YVM Tire, rear: P265/70R17 113S, all-season, white outline lettered 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YYK Tire, rear: LT215/85R16D, highway, blackwall 1999–2001, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YYL Tire, rear: LT215/85R16D, on/off-road, blackwall 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    YYN Tire, rear: LT235/85R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    Z5X Mirror provisions, Arabic language 1999–2000, 2002–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z82 Trailering provisions, heavy-duty 1999–2007 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ZBN Tire, spare: LT245/75R16C, on/off-road, blackwall 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZBX Tire, spare: LT245/75R16C, on/off-road, white outline lettered 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZCC Tire, spare: P255/70R16, all-season, blackwall 1999–2001, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZCJ Tire, spare: P255/70R16, all-season, white outline lettered 1999, 2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZCP Tire, spare: P255/70R16 109H, all-season, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZEC Tire, spare: LT215/85R16E, highway, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZEF Tire, spare: LT215/85R16E, on/off-road, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZER Tire, spare: LT265/75R16E, on/off-road, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGA Tire, spare: P245/75R16 109S, all-terrain, blackwall 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGB Tire, spare: P245/75R16 109S, all-terrain, white outline lettered 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGC Tire, spare: P265/75R16 114S, all-terrain, blackwall 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGD Tire, spare: P265/75R16 114S, all-terrain, white outline lettered 1999–2001, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGK Tire, spare: LT245/75R16E 120Q, on/off-road, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZGL Tire, spare: LT265/75R16C, on/off-road, blackwall 2000–2002 ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZHH Tire, spare: LT245/75R16E 120Q, all-season, blackwall 2001, 2004 ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZHP Tire, spare: LT225/75R16D, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZHS Tire, spare: P265/75R16 114H, temperature grade A, all-terrain, blackwall 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZHT Tire, spare: P265/75R16 114S, temperature grade A, all-terrain, white outline lettered 1999 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZIW Tire, spare: LT245/75R16E, on/off-road, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZIZ Tire, spare: LT245/75R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZLP Tire, spare: LT245/75R16E 120/116S, all-season, blackwall 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZMG Tire, spare: P245/75R16 112S extra load, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZMH Tire, spare: P245/75R16 112S extra load, all-season, white outline lettered 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZMJ Tire, spare: P265/70R16 111S, all-season, blackwall 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZMK Tire, spare: P265/70R16 111S, all-season, white outline lettered 1999–2001 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZNF Tire, spare: P235/75R16 106S, all-season, blackwall 1999–2001, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZNG Tire, spare: P235/75R16 106S, all-season, white outline lettered 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZNK Tire, spare: P245/75R16 109S, all-season, blackwall 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZNL Tire, spare: P245/75R16 109S, all-season, white outline lettered 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZW9 Base body or chassis (pickup box delete) 2000–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ZYK Tire, spare: LT215/85R16D, highway, blackwall 1999–2001, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    ZYL Tire, spare: LT215/85R16D, on/off-road, blackwall 1999–2001, 2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZYN Tire, spare: LT235/85R16E, all-season, blackwall 1999–2000 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed

    Paint

    Code Description Years Models/Notes Confidence
    01L Secondary exterior color, special 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    01U Primary exterior color, special 2004 ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZY1 Paint scheme, solid 1999–2000, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ZY2 Paint scheme, two-tone 1999–2000, 2003–2004 ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed

    Internal / Process

    Code Description Years Models/Notes Confidence
    5M7 Speedometer calibration provisions (SEO) 2001 internal code ⛭ GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    ARL Plant code: Arlington, Texas 2002 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    B4L Label, price, refer to geographic chart 2003–2005 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    BAG Parts package, export (overseas shipping) 1999–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    BL4 Label, price, refer to geographic chart 2006–2007 only in: heavy-duty models (GM’s HD list: 1500HD, 2500HD, 3500) internal code ⛭ GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    CKD Vehicle completely knocked down (CKD) export assembly 2003–2007 the 1999–2000 lists word it as Chevrolet only, so those years are left out internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    CMD Plant code: Flint, Michigan (truck) 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT1 Country code: Belgium 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT2 Country code: Austria 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT3 Country code: Germany 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT4 Country code: Luxembourg 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT5 Country code: Netherlands 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT6 Country code: Italy 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT7 Country code: Denmark 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT8 Country code: Portugal 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CT9 Country code: Spain 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU1 Country code: Norway 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU2 Country code: Finland 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU3 Country code: France 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU4 Country code: Sweden 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU7 Country code: Kuwait 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CU8 Country code: Saudi Arabia 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CV1 Country code: Iceland 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CV2 Country code: Brazil 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CV3 Country code: Mexico 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CV6 Country code: Chile 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW2 Country code: Gulf States (Bahrain, Oman, Qatar, UAE) 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW4 Country code: Caribbean 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW5 Country code: Venezuela 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW6 Country code: Guam 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW7 Country code: Puerto Rico/U.S. Virgin Islands 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CW8 Country code: Mexico (Border Dealers) 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CX2 Country code: Colombia 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CX3 Country code: Ecuador 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CY1 Country code: Africa 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CZ1 Country code: Central America 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CZ2 Country code: China 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    CZ3 Country code: Russia 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    DNR Equipment, dealer installed 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    EVA Test, DVT evaporative emission requirement 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    EXP Export processing 1999–2000, 2005–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    F0F Fleet incentive: Tourism Industry Inc. (Budget Sales and Leasing) 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    FE9 Emissions, Federal 1999–2000, 2005–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    FWI Plant code: Fort Wayne, Indiana 1999–2000, 2002, 2004 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    GMC Plant code: Pontiac East, Michigan 1999–2000, 2002, 2004 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    JAN Plant code: Janesville, Wisconsin 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    MAE Marketing area code: Europe 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    MAU Marketing area code: unregulated 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    MEX Plant code: Toluca, Mexico 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    MSL Plant code: Silao, Mexico 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NA1 Emissions, GVW 8,500 lb or less 1999–2000, 2002–2007 2005–2007: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NA4 Emissions, GVW over 8,500 lb 1999–2000, 2002–2007 2005–2007: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NA7 Emissions, European 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NB6 Emissions, California Tier 1 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NB8 Emissions override, California 2005–2007 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NC1 Emissions, California LEV 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NC7 Emissions override, Federal 2005–2007 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NC8 Emissions, California ULEV 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NE1 Emissions certification, geographically restricted registration (up to 14,000 lb GVW) 2005–2007 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NF2 Emissions, Federal Tier 1 1999–2000, 2002–2007 2005–2007: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NF4 Emissions, clean fuel fleet 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NF9 Emissions, general (export) 2003–2007 2003–2004 lists: general unleaded; 2005–2007: general with OBD malfunction-lamp suppression internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NG1 Emissions, geographically restricted (California requirements outside California) 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NN8 Emissions override, unleaded fuel, export 1999–2000 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    NT8 Emissions, Federal Tier 2 2004–2007 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NT9 Emissions, Federal Tier 2 phase-out 2004–2007 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    NU4 Emissions, California Level 2 Plus 2004–2007 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    OSG Plant code: Oshawa, Ontario (truck) 1999–2000, 2002–2004 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    P96 Mexican modification, mandatory base equipment 2003–2007 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    T7L Miscellaneous equipment for Central America (GMM controlled) 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T8Z Emissions, Mexico low emission vehicle 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    T98 Vehicle identification number stamping 2005–2007 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    TZ3 Emissions, Mexico level (GMM calibration) 2005 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    V60 Vehicle statement, Gulf States, incomplete vehicle 1999–2001, 2003–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2001 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V73 Vehicle statement, USA/Canada 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V78 Vehicle statement, delete 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V87 Vehicle statement, Gulf States 2003–2007 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    V98 Factory delivery processing 2002, 2004 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VBX Label, Arabic language 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VC0 Label, noise control information 1999–2000, 2003–2007 2005–2007: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VC4 Label, price and fuel economy, Puerto Rico and US Virgin Islands 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VC5 Label, shipping, except US, US possessions or Japan 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VC7 Label, price and fuel economy, Guam 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VCL Emissions certification, clean fuel vehicle (fleet) 2005–2007 internal code ⛭ GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VD1 Provisions, Europe 1999–2000, 2002 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VE3 Label, battery disposal 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VF4 Label, export diesel engine smoke standard 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VG1 Underhood corrosion protection for overseas shipment 1999 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VG8 Label, notice to buyer 2003–2005 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VGC Paint etch protective film (shipping) 1999–2000, 2002–2007 2005: heavy-duty models only (GM’s HD list) internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VJ3 Label/plate, ECE approval and vehicle identification 1999–2000, 2002–2003, 2005–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VJ4 Label, export child seat location 2000, 2002 internal code ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VJ7 Label, unleaded fuel only 2002, 2005–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VP3 Noise control, European provisions 2002 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VPH Vehicle preparation, overseas delivery 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VR6 Hooks, tie-down, shipping 1999–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VXS Vehicle complete 2002, 2004 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VXT Vehicle incomplete 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    VZ2 Speedometer calibration A 2000–2007 internal code ⛭ GM factory document — 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    VZ3 Label, mercury disposal notification 2004 internal code ⛭ GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    W86 Miscellaneous equipment for Venezuela (GMV controlled) 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    W87 Parts, North American, sourced in Venezuela (GMV controlled) 1999–2000, 2002 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    W99 Miscellaneous equipment for Venezuela (GM platform controlled) 2002–2007 internal code ⛭ GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    X44 Parts, North American sourced, shipped to outside supplier and checked (GMCL controlled) 2003 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 confirmed
    X52 Miscellaneous equipment for Guam, Puerto Rico and US Virgin Islands 2003–2007 internal code ⛭ GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    YF5 Emissions, California 1999–2000, 2005–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2005 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z49 Canadian modification, mandatory base equipment 1999–2000, 2002–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2000 gmc gmc c sierra 2wd rpo code list, p.1 · 2002 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed
    Z88 Conversion nameplate / market brand: GMC 1999–2007 internal code ⛭ GM factory document — 1999 gmc gmc c sierra 2wd rpo code list, p.1 · 2007 gmc sierra classic 2wd rpo code list, p.1 confirmed

    Sources

    Factory documents (T1)

    Other sources

    • NICB Passenger Vehicle Identification Manual, 2000, 2003 and 2007 editions, GM sections (docs/reference/nicb/nicb2000-gm.txt p.82, nicb2003-gm.txt p.80, nicb2007-gm.txt p.79) — Sierra, Sierra Denali and Sierra (Luxury) body and model lines (T4, context only).
    • GMT Central, GM RPO Code Decoder — https://gmtcentral.com/gm-rpo-code-decoder/ — queried 2026-10-07 through its search endpoint https://gmtcentral.com/wp-json/gmrpo/v1/search?q=CODE, one code at a time with a two-second pause (T3, meanings only: the dictionary has no years or vehicles). It agrees on HOT, LM7, LQ4, LR4, LU3, M30, MT1, NP1, NP8, G80, GT4, Z71, C60, UQ5, TRB (grille), UY2 (camper wiring), HP2, NW7, U01, L59; it words AU3, K05 and Z82 as export, Canadian and Reese-hitch variants, M32 as a 5-speed manual (the GM lists read it as the heavy-duty 4L60-E), and has no entry for PR0, PRO or SSL. No block or error was met; QIX returned no data.
    • Wikipedia, "Chevrolet Silverado (first generation)" — https://en.wikipedia.org/wiki/Chevrolet_Silverado_(first_generation) — retrieved 2026-10-07 through the MediaWiki API (context only: the Silverado and Sierra 1500 and 2500 built from 1998 as 1999 models, the Sierra Denali from 2002, the Sierra Professional of 2002–2003). The page https://en.wikipedia.org/wiki/GMC_Sierra is a redirect to the Silverado article.