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

    Source document

    docs/rpo/cadillac/sts-sigma.md

    Interactive view →

    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive STS — Sigma (2005–2011) page.

    Cadillac STS — Sigma (one generation) (2005–2011)

    The Cadillac STS (Sigma platform) is documented here from GM's service-manual RPO code lists for 2005 through 2009; no list was found for 2010 or 2011, and the 2011 model year rests on the NICB VIN manual, which prints the STS, STS Base, Luxury, Luxury Performance, RHD and STS-V carlines. The lists show a 3.6L LY7 V6 and a 4.6L LH2 V8 from 2005, a 4.4L supercharged LC3 V8 from 2006 (the STS-V's engine, per Wikipedia), a 2.8L LP1 V6 from 2007 and a 3.6L LLT direct injection V6 from 2008, with 5 speed and 6 speed automatic transmissions. The 2005 CTS list is the CTS list merged with the 2005 STS list, so the codes the two share are this car's own and are also noted in the CTS document. Wikipedia gives the sedan a Lansing Grand River, Michigan assembly plant, which the LAL plant code agrees with.

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    LC3 Engine, gas, 8 cylinder, 4.4L, multiport fuel injection, V8, supercharged, aluminum, DOHC, GM 2006–2009 only in: STS-V (Wikipedia). ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    LH2 Engine, gas, 8 cylinder, 4.6L, sequential fuel injection, V8, DOHC, high output, aluminum, GM 2005–2009 The 2009 list prints "ALUM" and a hyphen after "Engine". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    LLT Engine, gas, 6 cylinder, 3.6L, SIDI, V6, aluminum, 60 degrees, 224 kW, GM 2008, 2009 The 2008 list omits "224 KW". ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    LP1 Engine, gas, 6 cylinder, 2.8L, sequential fuel injection, V6, DOHC, aluminum, 60 degrees, GM 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    LY7 Engine, gas, 6 cylinder, 3.6L, sequential fuel injection, V6, aluminum, 60 degrees, GM 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Transmissions

    Code Description Years Models/Notes Confidence
    M22 Transmission, automatic 5 speed, HMD, 5L50-E, electronic, O/D 2005, 2006 The 2005 and 2006 STS lists print "6 Speed" with 5L50-E; the 2005 CTS list and most of GM's lists print 5 speed, which is used here. Pairs with the 4.6L LH2. ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    M82 Transmission, automatic 5 speed, HMD, 5L40-E, electronic 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    MV3 Transmission, automatic 5 speed, HMD, 5L50-E PTU, electronic, O/D 2005, 2006 Pairs with the 4.6L LH2. ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    MX0 Merchandised transmission, automatic, provisions, O/D 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    MX5 Transmission, automatic 5 speed, HMD, 5L40-E PTU, O/D 2006, 2007 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    MX7 Merchandised transmission, automatic, provisions, O/D, all wheel drive 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    MYB Transmission, automatic 6 speed, HMD, 6L50 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    MYC Transmission, automatic 6 speed, HMD, 6L80 2006–2009 only in: STS-V (Wikipedia). ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Axles

    Code Description Years Models/Notes Confidence
    G80 Axle, Positraction limited slip 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    GU2 Axle, rear, 2.73 ratio 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    GU5 Axle, rear, 3.23 ratio 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    GU6 Axle, rear, 3.42 ratio 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Packages & Trims

    Code Description Years Models/Notes Confidence
    W21 Appearance package, Cadillac Platinum Edition 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Y41 Sales package, Cadillac, luxury level 002 2008 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    Y48 Sales package, Cadillac, international luxury 002 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Y53 Sales package, Cadillac, technology driver awareness 2008, 2009 The 2008 list omits "Cadillac". ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Equipment

    Code Description Years Models/Notes Confidence
    A26 Window, European glazing, all 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    A45 Memory, seat adjuster and mirror, power, driver and personalization 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    A82 Restraint, head 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AE5 Lock control, entry, remote entry, low power, start 2005–2009 The 2009 list adds "Do not use after 2009 model year". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AHK Control, seat, rear, power lumbar, massage 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AL0 Sensor indicator, inflatable restraint, front passenger/child presence detector 2007–2009 The lists print "Sender Indicator"; GM's other lists print "Sensor Indicator", which is used here. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AL2 Control, seat, power lumbar 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AL9 Control, seat, power lumbar, driver 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    AN6 Restraint provisions, child, Australia/New Zealand 2008 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    AP9 Net, convenience 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AQ9 Seat, front, bucket, luxury 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    ARB Equipment, body structure reinforcement 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    ASG Seat, rear, bench 40/20/40, with multifunctional armrest 2007–2009 The lists print "RR", read as rear. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    ASH Seat, rear, bucket 40/0/40, with integrated functional console 2007–2009 The lists print "RR", read as rear. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AT8 Restraint provisions, child, rear seat, rear facing 2007–2009 The 2007 and 2008 lists print "RR Seat, RR Facing", read as rear. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AT9 Control, seat, power lumbar, passenger 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    AU0 Lock control, entry, remote entry 2006, 2007 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    AU8 Lock control, entry, remote entry, specific frequency 2005–2008 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    AX4 Restraint conversion, seat, manual, European 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    AY0 Restraint system, seat, inflatable, driver and passenger, front, side, roof side 2005, 2007, 2009 The 2005 list prints "Driver & Pass, Front, Side". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    B18 Ornamentation, interior, deluxe 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    B19 Ornamentation, interior, customs 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    B20 Ornamentation, interior, luxury 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    B57 Ornamentation, exterior, deluxe 2005–2009 The 2005 and 2006 lists print "Ornamentation Extra Deluxe"; the 2009 list and GM's other lists print "Exterior, Deluxe". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    BC8 Ornamentation, interior, driver map pockets 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    C9B Lamp, interior, ambient, door 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    C9J Lamp, interior, ambient, instrument panel 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    CE1 Wiper system, windshield, pulse, moisture sensitive 2005–2009 The 2005 and 2006 lists print "Washer System"; the 2007-2009 lists print "Wiper System". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    CE4 Washer, headlamp, high pressure 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    CF5 Roof, sun, glass, sliding, electric 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    CFN Roof, sun, glass, sliding, electric, not installed 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    CJ2 HVAC system, air conditioner, front, automatic temperature control, auxiliary temperature control 2005–2008 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    D24 Mirror, outside left-hand and right-hand, remote control, electric, heated, light sensitive, power folding, color 2007–2009 The 2009 list omits "color". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    D26 Mirror, outside left-hand and right-hand, remote control, electric, heated, power folding 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    DC5 Mirror, inside rear vanity, headlining, illuminated 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    DD7 Mirror, inside rearview, light sensitive, compass 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    DD8 Mirror, inside rearview, light sensitive 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    DL7 Mirror, outside left-hand and right-hand, remote control, electric, heated, power folding, color 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    DR2 Mirror, outside left-hand and right-hand, remote control, electric, heated, light sensitive, manual folding, color 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    DT4 Ashtray, cigarette lighter 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    E5A Chassis, retuned 2007–2009 The 2007-2009 lists print "Returned"; GM's other lists print "Retuned", which is used here. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    F55 Chassis, continuously variable real time damping, magneto rheological 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    FE1 Suspension system, soft ride 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    FE3 Suspension system, sport 2005–2009 The 2005 and 2006 lists print "Soft Ride" (the FE1 wording); the 2007-2009 lists and GM's other lists print Sport, which is used here. ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    FE4 Suspension system, special ride and handling 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    G64 Level control, automatic, self-adjusting 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    GME Ornamentation, exterior, GM Mark of Excellence 2006 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 confirmed
    J56 Brake system, power, front and rear disc, antilock, front and rear wheel, heavy duty 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JE2 Brake lining, performance driving 2005–2007 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    JE5 Brake system, power, antilock, front and rear wheel 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JL4 Control, active brake 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    JL7 Control, active brake, version 3.0 2008 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    JL9 Brake system, power, front and rear disc, antilock, front and rear wheel 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JNG Shaft, propeller, painted 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    K05 Heater, engine block 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    K14 Filter, air, automatic recirculating 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    K59 Cruise control, automatic, adaptive 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KA1 Heater, seat, front 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KA3 Heater, engine block, 220V 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KA6 Heater, seat, rear 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KB6 Heater, seat, cooling, front 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KC4 Cooling system, engine oil 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KD5 Heater, seat, cooling, rear 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KG4 Generator, 150 amp 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KNR Cooling system, axle 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    KW7 Generator, 170 amp 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    MTF Provision, fire extinguisher mounting 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    N05 Lock control, fuel filler cap 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    N30 Steering wheel, deluxe 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    N31 Steering wheel, heated 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    N87 Wheel, 18 x 8, aluminum 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    N88 Wheel, 17 x 7.5, aluminum, premium 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    N93 Wheel, 17 x 7.5, aluminum 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NP5 Steering wheel, leather wrapped 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NR7 Steering wheel, leather wrapped, heated 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NR8 Steering wheel, leather and wood, 3 spokes 2007 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    NV7 Steering, power, variable effort 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    P32 Wheel, 18 x 8.5, aluminum, painted 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    P40 Wheel, 18 x 8, aluminum, sport 2008, 2009 The 2008 list prints "Chromed"; the 2009 list and GM's other lists print Sport, which is used here. ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    P73 Wheel, 18 x 8.5, chrome, flanged 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    PB4 Lock control, wheel 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    PD5 Wheel, 18 x 8, aluminum, chromed 2007, 2008 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    PGK Wheel, 18 x 8, aluminum, chrome, 14 spokes 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    PTB Wheel, 17 x 7.5, aluminum, polished 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    Q11 Tire, all, P235/50R17 front and P255/45R17 rear 2005–2008 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    Q12 Tire, all, P235/50R18 front and P255/45R18 rear 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Q13 Wheel, 17 x 7.5 front and 17 x 8 rear, polished 2005–2008 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    Q14 Wheel, 17 x 7.5 front and 17 x 8 rear, painted 2005–2008 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    Q19 Tire, all, P255/45R18 front and P275/40R19 rear EMT 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Q20 Wheel, 18 x 8.5 front and 19 x 9.5 rear 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Q9Y Wheel, 18 x 8, aluminum, polished, sport 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    QAF Tire, all, 255/45ZR18-99Y BW TL HW4 2006–2009 The list prints the size without the P. ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    QCH Tire, all, 235/55R17-98H BW R/PE ST TL AL3 2007–2009 The list prints the size without the P. ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    QF8 Wheel, 18 x 8, aluminum, polished 2006, 2007, 2009 The 2006 list prints "Wheel 18 x 8, Aluminum" without polished. ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    QKP Tire, all, P235/50R17-95S BW R/PE ST TL ALS 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    QKS Tire, all, P235/50R17-95V BW R/PE ST TL AL3 2008, 2009 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T2H Ornamentation, exterior, export unique requirements 2005 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 confirmed
    T2J Ornamentation, interior, export unique requirements 2006, 2008, 2009 The 2009 list adds "(AOS Display)". ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T43 Spoiler, rear 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T62 Lighting, daytime running 2005, 2006 The 2005 and 2006 lists print the daytime running lighting itself; the 2007-2009 lists print it as a delete (separate row). ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    T62 Lighting, daytime running, delete 2007–2009 The 2005 and 2006 lists print the plain daytime running lighting (separate row). ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T65 Lamp system, daytime running, export 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T79 Lamp, fog, rear 2005, 2007–2009 The lists print "RR", read as rear. ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T84 Headlamps, right-hand rule of the road, E mark 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    T90 Lamp, signaling and marker, export 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    TQ5 Control, intelligent high beam 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    TR0 Lamp, interior, roof, rear, courtesy and dual reading 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    TR7 Headlamps, control, leveling system, automatic 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    TT6 Headlamps, high intensity discharge 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    TT7 Headlamps, high intensity discharge, left-hand rule of road 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    TT8 Headlamps, high intensity discharge, right-hand rule of road 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    TUM Alarm, seat belt warning, additional 2008, 2009 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    U03 Horn, noise regulation 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    U19 Speedometer, instrument, kilometers and miles, kilometer odometer 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    U2J Digital audio system, S-band, not installed 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    U2K Digital audio system, S-band 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    U2L Digital audio system, L-band 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    U30 Cluster, instrument, tachometer, clock 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UA2 Theft deterrent system, export specific 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UA6 Theft deterrent system 2005–2009 The 2009 list adds "Do not use after 2009 Global/New major programs". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UA7 Theft deterrent system, export specific, variation 2 2007, 2008 The lists print "Var #02". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    UC2 Speedometer, instrument, kilometers and miles, kilometer odometer, positive bias 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UC8 Speaker system 11, premium 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    UD4 Alarm, vehicle speed, 120 km/h 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UD7 Sensor indicator, rear parking assist 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    UDA Communication equipment, vehicle GPS 1, deactivated 2007 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    UE1 Communication system, vehicle, GPS 1 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UFL Sensor indicator, lane departure warning 2008, 2009 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UFT Sensor indicator, side obstacle detection 2008, 2009 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UG1 Garage door opener, universal 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UH3 Indicator, low tire pressure, variation 2 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UHB Lock control, entry, remote entry passive, remote start, specific frequency 2007–2009 The 2009 list adds "Do not use after 2009 model year". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UJ6 Indicator, low tire pressure 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UJ9 Indicator, low tire pressure, variation 1 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UL1 Frequencies, Australia/New Zealand 2008 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    UQ7 Speaker system, premium performance, enhanced audio, Bose 2005 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 confirmed
    UQY Infotainment system 018 2008 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    UQZ Infotainment system 19 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    UV6 Display, head up 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UX8 Speaker system 8, deluxe 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    UY5 Speaker system 15, deluxe 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V03 Cooling system, extra capacity 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V08 Cooling system, heavy duty 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V09 Cooling system, powertrain, high ambient 2006, 2007 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    V76 Hook, tow 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V92 Trailer provisions 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VJ1 License plate, rear mounting package, Japanese 2005, 2007–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VK3 License plate, front mounting package 2008, 2009 ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VL4 License plate, front mounting package, EEC 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VL6 License plate, front mounting package, Japanese 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VLF License plate, front mounting package, China 2007–2009 ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VMA License plate, front mounting package, Korea 2005–2007 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    VP6 Noise control 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VPM Modification, noise control, Mexico 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VR5 Provisions, slow vehicle warning triangle mounting 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VS1 First aid kit, vehicle 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    VU9 Flashlight, mounting provisions 2005, 2006 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    W11 Navigation disc data, nav data 1 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    W12 Navigation disc data, nav data 2 2006–2009 ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    XA7 Washer nozzles, heated, windshield 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ1 Infotainment system 009 2005–2009 The 2009 list prints "9". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ2 Infotainment system 010 2005–2009 The 2009 list prints "10". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ3 Infotainment system 011 2005 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 confirmed
    YQ4 Infotainment system 012 2005–2009 The 2009 list prints "12". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ5 Infotainment system 13 2009 ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    YQ6 Infotainment system 014 2005–2009 The 2009 list prints "14". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ7 Infotainment system 015 2005–2009 The 2009 list prints "15". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ8 Infotainment system 016 2007–2009 The 2009 list prints "16". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YQ9 Infotainment system 017 2007–2009 The 2009 list prints "17". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Z5X Mirror provisions, Arabic language 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Z5Y Mirror provisions, outside, etched warning 2005–2009 ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Interior Trim

    Code Description Years Models/Notes Confidence
    131 Interior trim, Light Gray/Ebony 2007 GM marks it "(1) (06)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    191 Interior trim, Ebony 2007 GM marks it "(1) (00)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    311 Interior trim, Ebony/Light Cashmere 2007 GM marks it "(1) (07)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    321 Interior trim, Medium Dark Cashmere 2007 GM marks it "(04)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    391 Interior trim, Cocoa/Light Cashmere 2007 GM marks it "(1) (08)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    491 Interior trim, Ebony/Saddle Brown 2007 GM marks it "(1) (07)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    671 Interior trim, Tango Red/Ebony 2007 GM marks it "(1) (07)". ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    IL2 Trim, interior design L2 2008 Interior design code. ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    IL3 Trim, interior design L3 2008 Interior design code. ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    IL4 Trim, interior design L4 2008 Interior design code. ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed

    Internal / Process

    Code Description Years Models/Notes Confidence
    B3V Test, extended water 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    BAG Parts package, export 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    CKD Vehicle, completely knocked down (CKD) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    DCP Processing, directions and connections service package 2009 internal code ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    DL5 Decal, roadside service information 2006, 2007 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2007 cadillac sts rpo code list, p.1 confirmed
    FE9 Certification, emission, federal 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJA PT dress subassembly installed (modular optimization method only) 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJB PT dress subassembly, not installed (modular optimization method only) 2008, 2009 internal code ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJC Instrument panel assembly, installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJD Instrument panel assembly, not installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJJ Suspension, front, installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJK Suspension, rear, installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJL Suspension, front, not installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    JJM Suspension, rear, not installed (modular optimization method only) 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    LAL Plant code, Lansing, MI, USA, Grand River 2005, 2007–2009 internal code The 2007-2009 lists print the plant as "Lansing, Mi USA (Grand River)". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NA3 Emission system, Japan 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NC1 Emission system, California, LEV 2005, 2006 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    NE1 Certification, emission, geographically restricted registration for vehicles up to 14,000 lbs GVW 2006–2009 internal code The lists add "Use 2003 Model Year". ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NF4 Emission system, clean fuel fleet 2006 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 confirmed
    NF9 Emission system, general, unleaded 2005, 2006 internal code The 2007 list prints a different meaning (separate row). ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    NF9 Emission system, general, OBD MIL suppression 2007 internal code The 2005 and 2006 lists print general unleaded (separate row). ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    NG1 Certification, emission, geographically restricted registration for vehicles up to 6,000 lbs GVW 2006 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 confirmed
    NQU Emission system, Korean, ULEV 2009 internal code ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    NT4 Emission system, EEC 05 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NT7 Emission system, federal, Tier 2 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NT9 Emission system, federal, Tier 2 phase-out 2005–2008 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    NU1 Emission system, California, LEV2 2005–2007, 2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    NU2 Emission system, California, ULEV2 2007 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 confirmed
    NU4 Emission system, California, LEV2 plus 2005, 2006 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    NU5 Emission system, California, BIN 4 2006–2008 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    NUA Emission system, California, 150K LEV2 2008 internal code ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    SHC Plant code, Shanghai, China 2009 internal code ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    THO Fleet sales, Penske GO no. G1667, G1668, G1674, G1676 2009 internal code ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    V4X Model conversion, GMX295, STS V8 2006–2009 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V73 Vehicle statement, USA/Canada 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V78 Vehicle statement, delete 2005–2009 internal code The 2005 and 2006 lists print only "Vehicle Statement"; the 2007-2009 lists add "Delete". ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    V87 Vehicle statement, Gulf States Organization 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VA7 Language label, French 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VB1 Label, shipping, Japan 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VBX Language label, Arabic 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VC4 Label, price/fuel economy, Puerto Rico and Virgin Islands 2005–2008 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    VC5 Label, shipping, except US, US possessions, or Japan 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VE7 Plate, vehicle identification, Australia/New Zealand 2008 internal code ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 confirmed
    VG1 Protector, underhood compound, corrosion preventive, water based, clear 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VG6 Label, information, bumper impact, 5 mph, California 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VG8 Vehicle label, notice to buyer 2005, 2006 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    VG9 Protector, wax, exterior body 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VH3 Label, information, bumper impact, 5 mph, Hawaii 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VH5 Plate, vehicle identification 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VH9 Envelope, owner information manual 2008, 2009 internal code The 2008 list prints "Info Man". ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VJ2 Label, export headlamp adjust 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VJ4 Label, export child seat location 2005, 2006 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2006 cadillac sts rpo code list, p.1 confirmed
    VKR Modification, requirement, vehicle with lead content 2009 internal code ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    VL2 Label, spare caution, compact spare 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VM3 Label, information, consumer, contains bumper impact standard for front 5 mph and rear 5 mph 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VT7 Owner's manual, English language 2008, 2009 internal code ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    VZ3 Label, mercury disposal notification 2005–2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    Y7C Conversion, act promoted to zero level 2007–2009 internal code ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed
    YB1 Plate, engine identification 2006 internal code ⛭ GM factory document — 2006 cadillac sts rpo code list, p.1 confirmed
    YF5 Certification, control, electronic throttle 2007, 2008 internal code The 2009 list prints California emission certification (separate row). ⛭ GM factory document — 2007 cadillac sts rpo code list, p.1 · 2008 cadillac sts rpo code list, p.1 confirmed
    YF5 Certification, emission, California 2009 internal code The 2007 and 2008 lists print electronic throttle control certification (separate row). ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1 confirmed
    Z49 Export Canadian modification, mandatory base equipment 2005, 2008, 2009 internal code ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1 · 2009 cadillac sts rpo code list, p.1 confirmed

    Sources

    Factory documents (T1)

    • cadillac/2005-cadillac-sts-rpo-code-list.txt — 2005 Cadillac STS — RPO Code List (GM Service Manual Online, via gm.saturn.team) — https://gm.saturn.team/Cadillac/STS/2005/50/99/4130/47866
    • cadillac/2006-cadillac-sts-rpo-code-list.txt — 2006 Cadillac STS — RPO Code List (GM Service Manual Online, via gm.saturn.team)
    • cadillac/2007-cadillac-sts-rpo-code-list.txt — 2007 Cadillac STS — RPO Code List (GM Service Manual Online, via gm.saturn.team)
    • cadillac/2008-cadillac-sts-rpo-code-list.txt — 2008 Cadillac STS — RPO Code List (GM Service Manual Online, via gm.saturn.team)
    • cadillac/2009-cadillac-sts-rpo-code-list.txt — 2009 Cadillac STS — RPO Code List (GM Service Manual Online, via gm.saturn.team)

    Other sources

    • NICB VIN manuals, docs/reference/nicb/nicb2005-gm.txt (pp. 22-23) and docs/reference/nicb/nicb2011-gm.txt (p. 25): STS carlines and 2005 engine table; the 2011 page shows the STS was still listed for 2011.
    • https://en.wikipedia.org/wiki/Cadillac_STS — fetched 2026-10-07 with WebFetch, no block; read for the model years, plant, engines, transmissions and STS-V.
    • docs/rpo/cadillac/cts-sigma.md — sibling document, read for the shared 2005 codes.