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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/gmc/suburban-squarebody.md

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    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Suburban — Square body (1983–1991) page.

    GMC Suburban — Square body (C/K, R/V from 1987) (1983–1991)

    No GMC order guide or data book for this truck is in the archive, so every code below comes from the Chevrolet Suburban Heritage kit books: the 1983–1990 books are joint Chevrolet and GMC books (they show GMC models, name the Z62 option Scottsdale/High Sierra and the YE9 option Silverado/Sierra Classic, then Silverado/SLE, and mark the UM7 radio standard on GMC models in 1990), while the 1991 book is a Chevrolet Motor Division book cited only for shared platform codes. The books show the C/K Suburban for 1983–1986 and the R/V Suburban for 1987–1991, in 10/1500 and 20/2500 series with two- or four-wheel drive, panel rear doors (ZW9) or a tailgate (E55) and B3J diesel equipment; engines are the 4 barrel 5.0L (LE9), 5.7L (LS9, LT9) and 7.4L (LE8) V8s to 1986, the fuel-injected 5.0L (L03, 1987), 5.7L (L05) and 7.4L (L19, from 1988) V8s and the 6.2L diesel (LH6, LL4), with the MM4 4 speed manual, MX0 4 speed overdrive automatic and MX1 3 speed automatic. NICB's 1987 VIN manual counts C/K Suburbans in its conventional cab lines, lists GMC truck among its make codes and gives the Suburban its own body type code (6), and its 1990 manual counts R/V Suburbans in its conventional cab lines and lists a Suburban/all purpose vehicle body type. No source here gives the GMC-only codes (the GMC name plate, the GMC paint colors, the 1991 GMC trim names), and tire, seat trim and paint color codes are not listed; the 1985 kit file also carries the October 1985 (1986 model year) book, cited only for 1986 (AA3, UY7).

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    L03 Engine, 5.0L V8, electronic fuel injection 1987 only in: R10/1500; the 1987 power team chart heads its R10906 teams with L03; the 1987 standard equipment page also prints LO3; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1987 Chevrolet Suburban, p.15 confirmed
    L05 Engine, 5.7L V8, electronic fuel injection 1987–1991 standard gasoline engine from 1988; 1989 from the option weight table (the 1989 option selection page prints LOS); the kit pages also print LO5; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1987 Chevrolet Suburban, p.15 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.8 · 1991 Chevrolet Suburban, p.8 single-source
    L19 Engine, 7.4L V8, electronic fuel injection 1988–1991 only in: R20/2500; requires UA1 (1988); the 1987 pages name L19 only in new-features prose and an MM4 restriction (the 1987 option line has no legible code), so 1987 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.8 · 1991 Chevrolet Suburban, p.18 single-source
    LE8 Engine, 7.4L V8, 4 barrel 1983–1986 only in: C20/2500; requires N41 power steering and UA1 heavy duty battery; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 confirmed
    LE9 Engine, 5.0L V8, 4 barrel 1983–1986 the option pages list the 5.0 liter (305 cu in) 4 barrel V8 for the C10/1500 only; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 confirmed
    LH6 Engine, diesel, 6.2L V8 1983–1991 light duty 6.2 liter (379 cu in) diesel for the 10/1500 series; requires B3J diesel equipment; not available in California from 1988; 1985 from the power team chart (the 1985 option line prints LH8); the 1987 new-features page prints LM6; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.9 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    LL4 Engine, diesel, 6.2L V8, heavy duty 1983–1989, 1991 heavy duty emissions 6.2 liter diesel for the 20/2500 series; requires B3J diesel equipment; 1989 from the power team page, which heads its diesel teams with LL4; the 1990 pages print the code as LIA or LLA, so 1990 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.6 · 1991 Chevrolet Suburban, p.18 single-source
    LS9 Engine, 5.7L V8, 4 barrel 1983–1986 the 5.7 liter (350 cu in) 4 barrel V8, standard on the K10/1500 and optional on the C10/1500; 1984 from the power team chart, which heads its K10906 teams with LS9; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.9 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 confirmed
    LT9 Engine, 5.7L V8, 4 barrel, heavy duty 1983–1986 only in: 20/2500 series; 1984 and 1985 from the power team charts, which head the C20906 and K20906 teams with LT9; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.10 · 1985 Chevrolet Suburban, p.10 · 1986 Chevrolet Suburban, p.15 confirmed

    Transmissions

    Code Description Years Models/Notes Confidence
    MM4 Transmission, manual, 4 speed 1983–1990 not on the C10/R10 series; not with LE8, L19 or B3J diesel equipment (1983–1988); 1988 from the power team chart; 1990 from the transmission table, which heads its 4 speed column with MM4, and a requirement remark on the 1990 convenience package entry, which pairs MM4 with the diesel equipment (the 1990 4 speed manual option line has no code); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.9 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.7 · 1990 Chevrolet Suburban, p.18 confirmed
    MX0 Transmission, 4 speed automatic, overdrive 1983–1991 standard on the C10/R10 series; 1988 from the power team chart and 1990 from the cooling page; the kit pages print MXO; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.9 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.16 · 1991 Chevrolet Suburban, p.19 single-source
    MX1 Transmission, 3 speed automatic 1983–1990 only in: 20/2500 series; standard with B3J diesel equipment (1984–1987); 1983 and 1988 from the power team charts; the 1987 page prints MXI; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.7 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.10 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 confirmed

    Axles

    Code Description Years Models/Notes Confidence
    G80 Axle, rear, locking differential 1983–1991 the GMC GMT400 Suburban doc reads it from GM's 1998–1999 lists as Positraction; the 1983–1988 option pages print G8O (1988 from the January 1988 price page); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.14 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.16 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    GQ1 Axle, rear, standard ratio 1983–1988 the power team charts print it in nearly every team; 73-87.com reads it as the standard (non-Positraction) rear axle; the 1989 option page prints the standard ratio as GOI; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.6 · 1984 Chevrolet Suburban, p.9 · 1985 Chevrolet Suburban, p.9 · 1986 Chevrolet Suburban, p.8 · 1987 Chevrolet Suburban, p.15 · 1988 Chevrolet Suburban, p.9 confirmed
    GT4 Axle, rear, 3.73 ratio 1983–1989 power team charts (1983–1988) and the 1989 option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.6 · 1984 Chevrolet Suburban, p.9 · 1985 Chevrolet Suburban, p.9 · 1986 Chevrolet Suburban, p.8 · 1987 Chevrolet Suburban, p.15 · 1988 Chevrolet Suburban, p.9 · 1989 Chevrolet Suburban, p.13 confirmed
    GT5 Axle, rear, 4.10 ratio 1983–1989 only in: 20/2500 series; power team charts (1983–1988) and the 1989 option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.7 · 1984 Chevrolet Suburban, p.10 · 1985 Chevrolet Suburban, p.10 · 1986 Chevrolet Suburban, p.9 · 1987 Chevrolet Suburban, p.16 · 1988 Chevrolet Suburban, p.10 · 1989 Chevrolet Suburban, p.13 confirmed
    GU4 Axle, rear, 3.08 ratio 1983, 1984, 1986, 1988, 1989 power team charts and the 1989 option weight table; the 1985 and 1987 charts print GUA, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.6 · 1984 Chevrolet Suburban, p.9 · 1986 Chevrolet Suburban, p.8 · 1988 Chevrolet Suburban, p.9 · 1989 Chevrolet Suburban, p.13 confirmed
    GU6 Axle, rear, 3.42 ratio 1983–1988 power team charts only; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.6 · 1984 Chevrolet Suburban, p.9 · 1985 Chevrolet Suburban, p.9 · 1986 Chevrolet Suburban, p.8 · 1987 Chevrolet Suburban, p.15 · 1988 Chevrolet Suburban, p.9 confirmed
    HC4 Axle, rear, 4.56 ratio 1983–1986, 1988, 1989 only in: 20/2500 series; power team charts and the 1989 option weight table; the 1987 chart prints HCA, so 1987 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.7 · 1984 Chevrolet Suburban, p.10 · 1985 Chevrolet Suburban, p.10 · 1986 Chevrolet Suburban, p.9 · 1988 Chevrolet Suburban, p.10 · 1989 Chevrolet Suburban, p.13 confirmed

    Packages & Trims

    Code Description Years Models/Notes Confidence
    V22 Appearance package, deluxe front 1983–1989 included with YE9; the GMC GMT400 Suburban doc reads it from GM's 1998–1999 lists as a chrome radiator grille; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.15 · 1984 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.24 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    YE9 Decor package, Sierra Classic 1983–1990 the joint books name it the Silverado/Sierra Classic model option to 1988 and the Silverado/SLE trim in 1989–1990 (Sierra Classic and SLE are the GMC names); the Chevrolet Suburban doc reads it as the Silverado decor package; 1991 is left out because the 1991 book is a Chevrolet-only book that names YE9 only as the Silverado trim; 1983, 1984 and 1986 rest on requirement remarks in other entries (custom seat trim, B32 floor mats and C60 air conditioning priced or available only with YE9); the 1985 and 1987 pages also print YEI and YEO; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.14 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.20 · 1988 Chevrolet Suburban, p.14 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 confirmed
    YG1 Molding package, custom 1983–1988 includes B84 black body side moldings, B96 wheel opening moldings and bright lamp trim; included with ZY3 and ZY5; 1983–1987 from the custom options feature pages; the kit pages also print YGI; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.25 · 1984 Chevrolet Suburban, p.29 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.30 · 1987 Chevrolet Suburban, p.35 · 1988 Chevrolet Suburban, p.18 confirmed
    YG3 Molding package, deluxe 1983–1989 includes B85 bright body side moldings and wheel opening moldings; included with YE9; 1985 from the custom options feature page; the 1989 entry also includes chromed bumpers with rub strips; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.16 confirmed
    Z62 Decor package, High Sierra 1983–1987 the joint books name it the Scottsdale/High Sierra model option (High Sierra is the GMC name); the Chevrolet Suburban doc reads it as the Scottsdale decor package; 1986 prints the option line; 1983–1985 and 1987 rest on requirement remarks in other entries (seat trim and molding prices with Z62, custom seats available only with Z62 or YE9); the 1985 option line prints 202; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.13 · 1987 Chevrolet Suburban, p.21 confirmed
    Z82 Trailer provisions, special equipment, heavy duty 1983–1991 the kits print it as the trailering special; includes VR4 hitch platform, UY7 wiring harness and V02 cooler (KC4 and N41 on some series); not with MM4 (1989–1990); 1983 from its own price lines (some print 282); 1984 from the V10 cold climate price line with Z82 (the 1984 option lines print 282); 1989 from the option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.19 · 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.14 · 1990 Chevrolet Suburban, p.27 · 1991 Chevrolet Suburban, p.19 single-source
    ZQ2 Operating convenience package 1988, 1990 includes AU3 power door locks and A31 power windows; 1988 prints ZQ2 on its option line; 1990 from the D48 mirror entry, available only with YE9 and ZQ2; the other years' option lines print 202, Z02, ZO2 or z02 and their pages name ZQ2 only as the package that includes AU3 or A31, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1988 Chevrolet Suburban, p.18 · 1990 Chevrolet Suburban, p.18 confirmed
    ZQ3 Convenience package, tilt steering wheel and speed control 1990, 1991 the driver's convenience package with Comfortilt steering wheel and electronic speed control; the option pages print 203, so both years cite the trailering equipment charts that recommend ZQ3; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1990 Chevrolet Suburban, p.27 · 1991 Chevrolet Suburban, p.28 single-source

    Equipment

    Code Description Years Models/Notes Confidence
    A31 Window, power 1983, 1984, 1986, 1987 side door glass; included with ZQ2; the 1989 option weight table prints A31, but the 1989 option pages show power windows only inside ZQ2, so 1989 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.19 · 1984 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.23 · 1987 Chevrolet Suburban, p.28 confirmed
    A33 Window, power, tailgate 1983–1989 electric tailgate window; only with E55; 1988 from the C49 defogger entry, which requires A33; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.19 · 1984 Chevrolet Suburban, p.21 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.23 · 1987 Chevrolet Suburban, p.28 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.17 confirmed
    AA3 Glass, deep tinted, light tinted rear window 1984–1989 not with AJ1; 1986 from the October 1985 (1986 model year) price page in the 1985 kit file, as the 1986 book prints the code with Cyrillic letters; the 1983 page also prints it with Cyrillic letters, so 1983 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.54 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.15 confirmed
    AJ1 Glass, deep tinted 1983–1991 dark laminated glass on the side windows and rear door; not with C49 (1988–1989); 1989 from the option weight table (the 1989 option line prints Al1); the kit pages also print AJI; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    AS3 Seats, center and rear 1983–1991 non-adjustable folding center seat with a quick release removable rear seat; includes AT5; the Chevrolet C/K square-body pickup doc reads AS3 from the pickup kits as the crew cab body code; 1988 from the seat trim price lines with AS3; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    AT5 Seat, center, folding 1983–1991 non-adjustable, with independent left-hand and right-hand folding sections; one of AT5, AS3 or YG4 must be ordered; 1984, 1987 and 1988 from the seat trim price lines with AT5 (the 1984 option line prints ATS), 1989 from the option weight table and 1990 from the model page heading for the optional folding center seat (the 1990 option line prints ATS); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.15 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.3 · 1991 Chevrolet Suburban, p.19 single-source
    AU3 Locks, power door 1983, 1984, 1986, 1989–1991 side doors, and the rear doors as well with ZW9; included with ZQ2 and YE9; 1989 from the option weight table, and the 1989 option page heads a power door lock line with AU3 (OCR runs it into the next word, so check-doc cannot read it there); the 1985 and 1987 pages name AU3 only as package content (the 1987 power door lock line prints no code), so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    AU6 Lock, power, rear door 1986 only with ZW9 panel rear doors; the 1985 option line prints AUB and the 1985 pages otherwise name AU6 only as package content, so 1985 is left out; the GMC GMT400 Suburban doc reads AU6 from GM's 1998–1999 lists as an electric end gate remote release; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.19 confirmed
    B32 Floor mats, front, color-keyed 1983, 1984, 1986–1989 only with YE9; 1987 and 1988 from the B33 entry, which requires B32 (the 1988 option line prints 832); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    B33 Floor mats, rear, color-keyed 1986, 1988, 1989 removable; requires B32; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.19 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    B3J Equipment, diesel 1983–1991 required with the LH6 and LL4 diesels; includes two heavy duty batteries, an engine oil cooler and special insulation (1983); the model selectors print it with the body code of each diesel model (ZW9/B3J, E55/B3J) to 1989, and the 1990 and 1991 model tables with the diesel model numbers (R20906/B3J, CR10906/B3J); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.2 · 1985 Chevrolet Suburban, p.2 · 1986 Chevrolet Suburban, p.1 · 1987 Chevrolet Suburban, p.8 · 1988 Chevrolet Suburban, p.14 · 1989 Chevrolet Suburban, p.10 · 1990 Chevrolet Suburban, p.3 · 1991 Chevrolet Suburban, p.3 single-source
    B84 Moldings, body side, black 1983–1988 bright with black insert; included with YG1, ZY3 and ZY5; 1985, 1986 and 1988 from the custom options feature pages (the option lines print 884); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.30 · 1987 Chevrolet Suburban, p.26 · 1988 Chevrolet Suburban, p.27 confirmed
    B85 Moldings, body side, bright 1983–1988 included with YG3 and YE9; 1985 and 1988 from the custom options feature pages (the option lines print 885); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.26 · 1988 Chevrolet Suburban, p.27 confirmed
    B93 Guards, door edge 1983, 1984, 1986, 1989, 1991 the 1987 page prints B83 and the 1988 page 893, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1986 Chevrolet Suburban, p.21 · 1989 Chevrolet Suburban, p.16 · 1991 Chevrolet Suburban, p.18 single-source
    B96 Moldings, wheel opening 1983–1987 bright with black paint trim; included with YG1 and YG3; custom options feature pages only; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.25 · 1984 Chevrolet Suburban, p.29 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.30 · 1987 Chevrolet Suburban, p.35 confirmed
    BB5 Headliner, interior 1983, 1984, 1986, 1987 full length, includes a dome lamp; included with YE9, Z62, B3J, C60 and C69; 1983, 1986 and 1987 rest on requirement remarks in the power door lock entries (available only with BB5, B3J, Z62, YE9, C60 or C69); the 1983 headliner line prints B85, and the 1985 pages name BB5 only as package content, so 1985 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.22 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 confirmed
    C36 Heater, auxiliary, rear 1983–1986, 1988–1991 located on the right side behind the rear fender well; the 1987 pages name C36 only in new-features prose (the 1987 rear heater line has no code), so 1987 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    C42 Heater, front, heavy duty 1984, 1986 only with B3J diesel equipment; not with C60 or C69; the 1985 page prints 642 and the 1987 page CAZ; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1984 Chevrolet Suburban, p.22 · 1986 Chevrolet Suburban, p.20 confirmed
    C49 Defogger, rear window, electric 1983–1986, 1988–1991 requires A33 in 1983–1984, 1986 and 1988–1989; not with AJ1; 1985 from the V10 cold climate price line with C49; the 1987 pages name C49 only in new-features prose, so 1987 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.19 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    C60 Air conditioning, front, All-Weather 1983–1991 included with C69; not with V10; 1985 and 1987 rest on requirement remarks in the operating convenience package and power door lock entries (available only with C60 or C69); the 1987 option line prints C80; the kits print it as the front system beside C69; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.15 · 1984 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    C69 Air conditioning, front and rear 1983–1991 roof mounted rear system on recirculating air; includes C60; only with YE9 or Z62 (1983–1987); 1987 rests on the requirement remark in the power door lock entry (available only with C60 or C69); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.15 · 1984 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    CD4 Wipers, windshield, intermittent 1983, 1984, 1986–1989 with MM4 requires N33 (1988–1989); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.19 · 1984 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.23 · 1987 Chevrolet Suburban, p.28 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.17 confirmed
    D44 Mirror, outside, below eye line, painted 1983, 1984, 1986 9 x 6.5 inch, left-hand and right-hand; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1986 Chevrolet Suburban, p.20 confirmed
    D45 Mirror, outside, below eye line, stainless steel 1983, 1984, 1986, 1989–1991 9 x 6.5 inch, left-hand and right-hand; the 1988 page prints 045; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1986 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    D48 Mirror, outside, remote control, electric 1990, 1991 only with YE9 and ZQ2; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    DF2 Mirror, outside, left-hand and right-hand, camper style, stainless steel 1983–1991 7.5 x 10.5 inch on adjustable arms; shipped loose for dealer installation (1983–1988); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.26 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    E55 Body equipment, end gate 1983–1991 the kits print it as the body ordering code of the tailgate model (tailgate with manual drop glass), with B3J for the diesel; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.2 · 1984 Chevrolet Suburban, p.2 · 1985 Chevrolet Suburban, p.2 · 1986 Chevrolet Suburban, p.1 · 1987 Chevrolet Suburban, p.8 · 1988 Chevrolet Suburban, p.14 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    F51 Shock absorbers, front and rear, heavy duty 1984–1987, 1989 only in: C10/R10 (standard on 20/2500); included with Z82; the 1988 pages name F51 only as Z82 package content, so 1988 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.27 · 1989 Chevrolet Suburban, p.17 confirmed
    F58 Stabilizer bar, front, heavy duty 1983, 1986, 1988–1991 1.25 inch diameter; standard on K/V models, optional on the C20/R20; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.22 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    F59 Stabilizer bar, front 1983–1987 1 inch diameter; only in: C10/R10; included with AS3 and B3J; 1984, 1985 and 1987 from the GVWR selector pages, which list F59 as minimum equipment for a GVW rating; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.11 · 1985 Chevrolet Suburban, p.11 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.17 confirmed
    F60 Spring, front, heavy duty 1983, 1985–1991 2250 lb each; includes heavy duty front and rear shocks without Z75; for snowplow use or front mounted accessories; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    K05 Heater, engine block 1983–1989 600 watt, 120 volt; not with B3J; included with V10; the 1985, 1988 and 1989 pages print KO5; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.16 confirmed
    K22 Generator, 94 amp 1986 included with the LE8 7.4L engine; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.19 confirmed
    K34 Speed control, electronic 1983–1987, 1989 not with MM4; the 1988 page prints the code with a Cyrillic K, so 1988 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.27 · 1989 Chevrolet Suburban, p.17 confirmed
    K46 Air cleaner, pre-cleaner 1983–1989 with L19 requires a 3.73 axle on the R20/2500 (1988–1989); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.15 · 1984 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.24 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    K81 Generator, 66 amp 1983–1986 included with Z82, C60, C69, B3J, V10, C36 or C49; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.19 confirmed
    KC4 Cooling system, engine oil 1984, 1985, 1987, 1989–1991 the kits print it as the engine oil cooler; not with B3J; included with Z82; the 1986 and 1988 option lines print KCA and those pages name KC4 otherwise only as Z82 package content, so 1986 and 1988 are left out; 1990 and 1991 from the trailering equipment charts, and the 1991 option page also heads an engine oil cooler line with KC4 (OCR runs it into the next word); shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.25 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.27 · 1991 Chevrolet Suburban, p.28 single-source
    N33 Steering wheel, Comfortilt 1983–1989 with MM4 requires CD4 (1988–1989); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.17 confirmed
    N41 Steering, power 1983–1987 standard on K/V models; included with Z82 and B3J; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 confirmed
    N51 Steering, power, not desired 1983–1987 only in: C/R models; not with Z82 or B3J; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 confirmed
    N67 Wheels, rally 1985–1991 only in: 10/1500 series; 15 x 8 wheels with special hub caps and trim rings; not with P215/75R15 tires; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.23 · 1987 Chevrolet Suburban, p.28 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    N90 Wheels, aluminum, cast 1985–1991 only in: 10/1500 series; four 15 x 7 wheels with special hub caps; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.23 · 1987 Chevrolet Suburban, p.28 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    NE2 Fuel tank, approximately 40 gallon 1983–1989 about 40 gallons with gasoline engines and 41 gallons with the diesel; replaces the production tank; 1984 from the NY1 shield price lines with and without NE2; 1989 from the option weight table (the option page prints NEZ); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.13 confirmed
    NK7 Fuel tank, approximately 31 gallon 1983–1987 about 31 gallons with gasoline engines and 32 gallons with the diesel; replaces the production tank; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 confirmed
    NY1 Shield, fuel tank 1985, 1987, 1989–1991 includes a transfer case shield on K/V models; the 1987 and 1990 pages print NYI; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1985 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.27 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    P01 Wheel covers, bright metal 1986, 1988–1991 only in: 10/1500 series; included with YE9 (1988–1991); not with N67 or N90 (1989–1991); the 1986 and 1989 pages print PO1 and POI; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1986 Chevrolet Suburban, p.23 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    P42 Tires, puncture sealant 1988, 1989 requires HB P235/75R15 tires; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.16 confirmed
    PA1 Wheel covers, special, bright metal 1986, 1988 only in: 20/2500 series; the 1989 option weight table prints PAI, but the 1989 option pages offer only P01 wheel covers, so 1989 is left out; 73-87.com reads PA1 as special wheel covers; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.23 · 1988 Chevrolet Suburban, p.20 confirmed
    PF2 Wheels, aluminum, forged 1987 only in: R10/V10; four 15 x 7 wheels with special hub caps; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1987 Chevrolet Suburban, p.28 confirmed
    T63 Buzzer, headlamp warning 1983–1989 included with YE9 (1988–1989); shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.15 confirmed
    TP2 Battery, auxiliary 1984, 1986–1989 not with B3J; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1984 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.24 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    TR9 Lighting, auxiliary 1989 includes a front dome and reading lamp, glove box and underhood lamps; included with YE9; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1989 Chevrolet Suburban, p.16 confirmed
    TT4 Headlamps, halogen 1983 not with TT5, V22 or YE9; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 confirmed
    TT5 Headlamps, halogen high beam 1983–1986 only with V22 or YE9; the 1987 page prints TTS; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 confirmed
    U01 Lamp, roof marker, five 1984–1991 not with YF5; the 1989 and 1991 pages print UOI and UO1; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    U35 Clock, electric, quartz 1985, 1986, 1988 includes Z53 gages without YE9; not with UM6 or UM7; the 1983, 1984 and 1987 pages name U35 only in the Z53 entries' package-content remarks (the clock lines print no legible code), so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.18 · 1988 Chevrolet Suburban, p.17 confirmed
    U37 Lighter, cigarette 1984–1987 included with YE9 or Z62; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1984 Chevrolet Suburban, p.22 · 1985 Chevrolet Suburban, p.19 · 1986 Chevrolet Suburban, p.20 · 1987 Chevrolet Suburban, p.26 confirmed
    U58 Radio, AM/FM stereo 1983–1987 shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 confirmed
    U63 Radio, AM 1983–1987 shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 confirmed
    U69 Radio, AM/FM 1983–1987 shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 confirmed
    U76 Antenna, windshield 1983–1986 included with the radios; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 confirmed
    UA1 Battery, heavy duty 1983–1989 630 cold cranking amps from 1987; not with B3J; included with V10; required with LE8 and L19; 1983–1985 from the LE8 requirement remarks; the 1988 page prints UAI; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.10 · 1985 Chevrolet Suburban, p.16 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.24 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    UL5 Radio, delete 1989, 1991 the 1990 page prints ULS, so 1990 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1989 Chevrolet Suburban, p.16 · 1991 Chevrolet Suburban, p.18 single-source
    UM6 Radio, AM/FM stereo, electronically tuned, seek and scan, stereo cassette tape, digital clock 1986, 1989–1991 includes dual rear speakers; the 1986 page does not say electronically tuned; the 1987 and 1988 pages name UM6 only in the U35 clock exclusion, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1986 Chevrolet Suburban, p.21 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    UM7 Radio, AM/FM stereo, electronically tuned, seek and scan, digital clock 1989–1991 the 1988 page names UM7 only in the U35 clock exclusion, so 1988 is left out; the 1990 joint book marks it standard on GMC models; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    UN3 Radio, AM/FM stereo, stereo cassette tape 1983–1987 shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 confirmed
    UU9 Radio, AM/FM stereo, electronically tuned, digital display 1989 14 presets; no seek-scan or clock (UM7 adds both); the 1990 page does not print UU9, so 1990 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1989 Chevrolet Suburban, p.16 confirmed
    UX1 Radio, AM stereo/FM stereo, electronically tuned, seek and scan, stereo cassette tape with search and repeat, graphic equalizer, digital clock 1989–1991 the 1989 and 1990 pages print UXI; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    UY7 Wiring harness, trailer, heavy duty 1985–1990 7 lead; included with Z82; 1986 from the October 1985 (1986 model year) price page in the 1985 kit file, as the 1986 book prints UYT; the 1983 and 1984 option lines print UYT and the 1984 pages otherwise name UY7 only as Z82 package content, so 1983 and 1984 are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1985 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.55 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.18 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 confirmed
    V01 Radiator, heavy duty 1983–1991 not with C60, C69 or B3J; 1984 from the Z82 entry, which requires V01; 1989–1991 from the cooling pages; the kit pages also print VO1 and VOI; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.11 · 1990 Chevrolet Suburban, p.16 · 1991 Chevrolet Suburban, p.15 single-source
    V02 Radiator and transmission oil cooler, heavy duty 1983–1991 automatic transmissions only; included with Z82; the 1983 and 1984 pages call it a transmission oil cooler; 1989–1991 from the cooling pages; the kit pages also print VO2; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.16 · 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.11 · 1990 Chevrolet Suburban, p.16 · 1991 Chevrolet Suburban, p.15 single-source
    V10 Package, cold climate 1984–1991 includes a heavy duty heater and defroster, K05 engine block heater and UA1 heavy duty battery; not with C60, C69 or B3J; the 1983 pages name V10 only in package-content and exclusion remarks, so 1983 is left out; the 1987 page prints VIo; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1984 Chevrolet Suburban, p.19 · 1985 Chevrolet Suburban, p.18 · 1986 Chevrolet Suburban, p.19 · 1987 Chevrolet Suburban, p.25 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    V31 Guards, front bumper, chromed 1983–1989 with rub strips; not with VE5; 1983–1985 and 1987 from the custom options feature pages; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.25 · 1984 Chevrolet Suburban, p.29 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.35 · 1988 Chevrolet Suburban, p.17 · 1989 Chevrolet Suburban, p.15 confirmed
    V76 Tow hooks, front 1983, 1985–1989 K/V models only in 1983 and 1985–1986, all models in 1987–1989; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.17 confirmed
    VE5 Bumpers, front and rear, deluxe chromed 1983–1987 with black resilient impact strips; not with V31; 1983–1985 and 1987 from the custom options feature pages; the 1988 pages print VES; the 1989 option weight table prints VE5, but the 1989 option pages name chromed bumpers only inside YG3, so 1989 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.25 · 1984 Chevrolet Suburban, p.29 · 1985 Chevrolet Suburban, p.29 · 1986 Chevrolet Suburban, p.18 · 1987 Chevrolet Suburban, p.35 confirmed
    VR2 Trailer hitch, deadweight type 1983–1989 not with Z82; 1989 from the option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.14 confirmed
    VR4 Trailer hitch, weight distributing platform 1983–1990 not with VR2; included with Z82; 1989 from the option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.21 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.14 · 1990 Chevrolet Suburban, p.19 confirmed
    X6W Hubs, manual locking 1987 only in: V10/V20; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1987 Chevrolet Suburban, p.25 confirmed
    X6Z Hubs, automatic locking 1986, 1989 only in: K/V models; 1989 from the option weight table; the 1987 and 1988 pages print XBZ and the 1990 and 1991 pages XGZ, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.20 · 1989 Chevrolet Suburban, p.14 confirmed
    YG4 Seats, optional, not desired 1983, 1985–1987, 1989–1991 no charge; one of AT5, AS3 or YG4 must be ordered; printed as rear seat not desired from 1989; the Chevrolet C/K square-body pickup doc reads YG4 from the pickup kits as the bonus cab body code; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.27 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 · 1991 Chevrolet Suburban, p.19 single-source
    Z53 Gages, voltmeter, temperature and oil pressure 1986 included with YE9 and U35; the 1983–1985 and 1987 option lines print 253 and those pages otherwise name Z53 only as U35 clock content, so those years are left out; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1986 Chevrolet Suburban, p.19 confirmed
    Z75 Shock absorbers, front, quad 1983–1990 only in: K/V models; includes heavy duty rear shocks and a front axle bumper; 1983–1988 from the F60 spring price lines with Z75 (the option lines print 275); 1991 is left out: the Chevrolet-only 1991 page names Z75 only in the F60 remark; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.18 · 1984 Chevrolet Suburban, p.20 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.22 · 1987 Chevrolet Suburban, p.27 · 1988 Chevrolet Suburban, p.19 · 1989 Chevrolet Suburban, p.17 · 1990 Chevrolet Suburban, p.19 confirmed
    ZW9 Body equipment, panel rear doors 1983–1991 the kits print it as the body ordering code of the panel rear door model, with B3J for the diesel; the GMC GMT400 Suburban doc reads ZW9 from GM's 1998–1999 lists as base body or chassis cab; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.2 · 1984 Chevrolet Suburban, p.2 · 1985 Chevrolet Suburban, p.2 · 1986 Chevrolet Suburban, p.1 · 1987 Chevrolet Suburban, p.8 · 1988 Chevrolet Suburban, p.14 · 1989 Chevrolet Suburban, p.15 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source

    Paint

    Code Description Years Models/Notes Confidence
    ZY1 Color combination, solid 1983–1991 shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    ZY2 Color combination, conventional two-tone 1989–1991 includes YG3 (1989); the 1989 option page prints Zx2; shared square-body platform code; cited from the Chevrolet Suburban kit; 1991 rests on the Chevrolet-only 1991 Suburban book, so the row is single-source ⛭ GM Heritage — 1989 Chevrolet Suburban, p.13 · 1990 Chevrolet Suburban, p.18 · 1991 Chevrolet Suburban, p.18 single-source
    ZY3 Color combination, special two-tone 1983–1990 includes YG1 and wheel opening moldings without YE9; 1984 and 1986 from the YG3 molding package price lines with ZY3; 1991 is left out because only the color combinations page of the Chevrolet-only 1991 book prints it; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.16 · 1990 Chevrolet Suburban, p.18 confirmed
    ZY4 Color combination, deluxe two-tone 1989–1990 1989 from the joint book's color combinations page headed deluxe two-tone (ZY4) (the 1989 option line prints 2Y4); 1991 is left out because only the color combinations page of the Chevrolet-only 1991 book prints it; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1989 Chevrolet Suburban, p.20 · 1990 Chevrolet Suburban, p.18 confirmed
    ZY5 Color combination, exterior decor package, two-tone with striping 1983–1988 dual-tone decal striping; includes YG1 without YE9; 1984 from the YG3 molding package price line with ZY5; shared square-body platform code; cited from the Chevrolet Suburban kit ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 confirmed

    Internal / Process

    Code Description Years Models/Notes Confidence
    B3W Price information, preliminary 1983–1987 printed as a no-price line in the option list; shared square-body platform code; cited from the Chevrolet Suburban kit internal code ⛭ GM Heritage — 1983 Chevrolet Suburban, p.17 · 1984 Chevrolet Suburban, p.23 · 1985 Chevrolet Suburban, p.20 · 1986 Chevrolet Suburban, p.21 · 1987 Chevrolet Suburban, p.26 confirmed
    NA5 Emission system, standard 1984–1988 the kits print it as standard emission equipment; 1984, 1987 and 1988 from the power team chart headings; the 1983 pages print NAS on the option line and power team heading and name NA5 otherwise only in a note on NA6 availability, so 1983 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit internal code ⛭ GM Heritage — 1984 Chevrolet Suburban, p.9 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.15 · 1988 Chevrolet Suburban, p.9 confirmed
    NA6 Emission system, high altitude 1984–1989 1984 from the power team heading; 1989 from the option weight table; the 1983 pages print NAG on the option line and power team heading and name NA6 otherwise only in restriction remarks, so 1983 is left out; shared square-body platform code; cited from the Chevrolet Suburban kit internal code ⛭ GM Heritage — 1984 Chevrolet Suburban, p.10 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.13 confirmed
    YF5 Emission system, California 1983–1989 1989 from the option weight table; shared square-body platform code; cited from the Chevrolet Suburban kit internal code ⛭ GM Heritage — 1983 Chevrolet Suburban, p.13 · 1984 Chevrolet Suburban, p.16 · 1985 Chevrolet Suburban, p.15 · 1986 Chevrolet Suburban, p.15 · 1987 Chevrolet Suburban, p.21 · 1988 Chevrolet Suburban, p.15 · 1989 Chevrolet Suburban, p.14 confirmed

    Sources

    Factory documents (T1)

    • [HK] chevrolet/1983-Chevrolet-Suburban.txt — 1983 C/K Suburban book, a joint Chevrolet and GMC book (model selector, power teams, option price pages, custom options feature page); shared platform codes only
    • [HK] chevrolet/1984-Chevrolet-Suburban.txt — 1984 C/K Suburban book, joint Chevrolet and GMC (model selector, power teams, standard equipment and option price pages, custom options feature page); shared platform codes only
    • [HK] chevrolet/1985-Chevrolet-Suburban.txt — 1985 C/K Suburban book, joint Chevrolet and GMC, pages 2–29; the file's pages 36–66 are the October 1985 book for the 1986 model year, cited only for 1986 (pages 54–55, AA3 and UY7); shared platform codes only
    • [HK] chevrolet/1986-Chevrolet-Suburban.txt — 1986 C/K Suburban book, joint Chevrolet and GMC (model selector, power teams, option price pages, custom options feature page); shared platform codes only
    • [HK] chevrolet/1987-Chevrolet-Suburban.txt — 1987 R/V Suburban book, joint Chevrolet and GMC (new-features page, model selector, power teams, option price pages, custom options feature page); shared platform codes only
    • [HK] chevrolet/1988-Chevrolet-Suburban.txt — 1988 R/V Suburban book, joint Chevrolet and GMC (power teams, option price pages, custom options and seating pages); shared platform codes only
    • [HK] chevrolet/1989-Chevrolet-Suburban.txt — 1989 R/V Suburban data book, joint Chevrolet and GMC (specifications, option weights, option selection pages, trailering page); shared platform codes only
    • [HK] chevrolet/1990-Chevrolet-Suburban.txt — 1990 R/V Suburban data book, joint Chevrolet and GMC (models, powertrains, cooling, option pages, trailering chart); shared platform codes only
    • [HK] chevrolet/1991-Chevrolet-Suburban.txt — 1991 R/V Suburban data book, a Chevrolet Motor Division book with Chevrolet model numbers (models, specifications, cooling, option pages, trailering pages); shared platform codes only
    • NICB VIN manuals: docs/reference/nicb/nicb1987-gm.txt p.92–93; docs/reference/nicb/nicb1990-gm.txt p.82

    Other sources