GM RPO Code Database

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By FullSizeChevy.com Updated

Search the code list

24,366
codes on file
51,776
documented meanings
1973–2026
model years

Type a code, or describe the option in words. Every entry says where the meaning came from and which years we hold it for, because an RPO code can mean different things in different eras and a list that hides that is worse than no list.

CodeMeaningYearsSourcing
001 P RAT, M RATIO, 3.70 1991 GM sourced
001 Rat, M Ratio, 3.70 1991 GM dated
002 P RAT, M RATIO, 4.11 (4 1/9) 1991 GM sourced
002 Rat, M Ratio, 4.11 (4 1/9) 1991 GM dated
003 Rat, M Ratio, 4.33 1991 GM dated
003 P RAT, M RATIO, 4.33 1991 GM sourced
004 Rat, M Ratio, 4.78 1994 GM dated
004 P RAT, M RATIO, 4.78 1994 GM sourced
005 Rat, M Ratio, 4.56 (4 5/9) 1991 GM dated
005 P RAT, M RATIO, 4.56 (4 5/9) 1991 GM sourced
006 Rat, M Ratio, 4.63 (4 5/8) 1996 GM dated
006 P RAT, M RATIO, 4.63 (4 5/8) 1996 GM sourced
007 Rat, M Ratio, 3.07 1997 GM dated
007 P RAT, M RATIO, 3.07 1997 GM sourced
008 Rat, M Ratio, 4.88 1996 GM dated
008 P RAT, M RATIO, 4.88 1996 GM sourced
009 Rat, M Ratio, 5.29 1991 GM dated
009 P RAT, M RATIO, 5.29 1991 GM sourced
00A Spare wheel upgrade Chevrolet Silverado 1500 2022–2023 GM sourced
00A Wheel Spare 17 X 8.0, J, Steel, Design 2 — Reference
00D Not Equipped with Climate Control Knob Digital Temperature Display Chevrolet Silverado 1500 2022 Provisional
00G Not Equipped with Heated Steering Wheel, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00L Ccl, R Secondary Color, Exterior, Prime 1989 GM dated
00L P CCL, R SECONDARY COLOR, EXTERIOR, PRIME 1989 GM sourced
00L Exterior Color,secondary,prime,union City Body — GM dated
00R Not Equipped with Heated Rear Outboard Seats, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00U Ccu, M Primary Color, Exterior, Prime 1989 GM dated
00U P CCU, M PRIMARY COLOR, EXTERIOR, PRIME 1989 GM sourced
00U Exterior Color,primary,prime,upper,union City Body — GM dated
00V Not Equipped with Heated or Ventilated Front Seats, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00Y Not Equipped with Rear Park Assist, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
00Z Not Equipped with Front and Rear Park Assist, see dealer for details Chevrolet Silverado 1500 2022–2023 Provisional
010 Rat, M Ratio, 5.43 1991 GM dated
010 P RAT, M RATIO, 5.43 1991 GM sourced
011 Rat, M Ratio, 5.57 (5 4/7) 1991 GM dated
011 P RAT, M RATIO, 5.57 (5 4/7) 1991 GM sourced
012 Rat, M Ratio, 5.83 1991 GM dated
012 P RAT, M RATIO, 5.83 1991 GM sourced
013 Rat, M Ratio, 3.73 1995 GM dated
013 P RAT, M RATIO, 3.73 1995 GM sourced
014 Rat, M Ratio, 6.14 (6 1/7) 1991 GM dated
014 P RAT, M RATIO, 6.14 (6 1/7) 1991 GM sourced
015 Rat, M Ratio, 6.17 1991 GM dated
015 P RAT, M RATIO, 6.17 1991 GM sourced
016 Rat, M Ratio, 5.25 1991 GM dated
016 P RAT, M RATIO, 5.25 1991 GM sourced
017 Rat, M Ratio, 6.50 1991 GM dated
017 P RAT, M RATIO, 6.50 1991 GM sourced
018 Rat, M Ratio, 6.65 1989 GM dated
018 P RAT, M RATIO, 6.65 1989 GM sourced
019 Rat, M Ratio, 6.67 1989 GM dated
019 P RAT, M RATIO, 6.67 1989 GM sourced
01A Stc, R Stripe Color, Accent, Two Tone, Silver/gunmetal (1995) 1998 GM dated
01A P STC, R STRIPE COLOR, ACCENT, TWO TONE, SILVER/GUNMETAL (1995) 1998 GM sourced
01A Stripe Color Accent, Two Tone, Silver/gunmetal — GM dated
01A Trim Color Seat Jet Black — GM dated
01B Trim Color Seat LT Neutral — Reference
01C Trim Color Seat LT Titanium — Reference
01D Trim Color Seat LT Cashmere — Reference
01E Trim Color Seat DK Titanium — Reference

The full list, A to Z

Showing 501–600 of 625 codes beginning with L. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
LSX P, PWO, M, POWER OPTION, CATERPILLAR 3126, 7.2L, 210 GROSS H.P. @ 2,200 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LSZ P, PWO, M, POWER OPTION, CATERPILLAR 3126, 7.2L, 230 GROSS H.P. @ 2,200 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LT0 P, ENG, M, ENGINE, ALCOHOL, 4 CYL, 2.0L, TBI, L4, OHC, BRA 1998 Provisional
LT1 P, ENG, M, ENGINE, GAS, 8 CYL, 5.7L, MFI, HO this code has more than one documented meaning — filter by year 1999 GM sourced
LT2 Engine,2.0l(2.0k),l4,efi — Reference
LT3 Engine,2.0l(2.0m),l4,mfi — Reference
LT4 Engine, 6.2L supercharged V8 this code has more than one documented meaning — filter by year 2026 GM sourced
LT5 P, ENG, M, ENGINE, GAS, 8 CYL, 5.7L, MFI, OHC this code has more than one documented meaning — filter by year 1985 GM sourced
LT6 Engine,4.3l(4.3v),diesel V6 — Reference
LT7 Engine,4.3l(4.3t),diesel V6 C.i.d. 260 — Reference
LT8 Engine,4.1l(4.1-8),v8 — Reference
LT9 Engine,350,v8 (gasoline) — Reference
LTC Engine Gas, 10 Cyl, 8.8l, Sfi, V10, Ohv, Vvt, Alumn, GM — Reference
LTD Engine Gas, 4 Cyl, 2.0l, Mfi, Alum, Dohc, Sgm — Reference
LTG Engine Gas, 4 Cyl, 2.0l, Sidi, L4, Alum Dohc, Vvt, Turbo E85 Max — Reference
LTJ Merchandised Pkg Chevrolet Suburban 'ltz' — Reference
LTR Power Option (8.2t), 180 Gross HP @ 2800 Rpm — Reference
LTS Power Option (8.2t), 210 Gross HP @ 2800 Rpm — Reference
LTT P, ENG, M, ENGINE, GAS, 12 CYL, 7.5L, SFI, V12, DOHC, VVT, ALUM, TURBO, GM, 20903 — Provisional
LU0 P, ENG, M, ENGINE, GAS, 4 CYL, 2.6L, MFI, OHC 1987 Provisional
LU1 P, ENG, M, ENGINE, GAS, 6 CYL, 3.2L, SFI, V6, ALUM, 60 DEGREES, GM this code has more than one documented meaning — filter by year 1999 GM sourced
LU2 P, ENG, M, ENGINE, GAS, 4 CYL, 2.0L, MFI, TURBO, DOHC, 147KW, 10904 E, 0 — GM sourced
LU3 4.3-liter V6 gasoline engine 2007 GM sourced
LU4 P, ENG, M, ENGINE, GAS, 4 CYL, 2.3L, MFI, LOW PRESSURE TURBO, DOHC 1998 GM sourced
LU5 P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, MFI, DOHC, REDUCED OUTPUT, 10620 E, 0 — Provisional
LU6 P, ENG, M, ENGINE, GAS, 4 CYL, 2.4L, MFI. 1997 Provisional
LU7 P, ENG, M, ENGINE, DIESEL, 4 CYL, 1.7L, L4, OPEL 1998 Provisional
LU8 P, ENG, M, ENGINE, DIESEL, 4 CYL, 1.7L, L4, TURBO, OPEL 1998 Provisional
LU9 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.8L, L4, TURBO 1996 Provisional
LUD Power Option,8.2l T/c 180 HP @ 2800 Rpm — Reference
LUE Power Option,ddad,8.2l,na,170 HP @ 2600 Rpm — Reference
LUF Power Option,8.2 T/c 210 HP @ 2800 Rpm — Reference
LUG Family Code, Luggage Carrier 1989 GM dated
LUJ Engine Gas, 4 Cyl, L4, 1.4l, Mfi, Dohc, Turbo Ho, Alum Gme — Reference
LUK Engine Gas, 4 Cyl, 2.4l, Di, Alum, Dohc, Bas, Ecotec — Reference
LUT P, PLT, R, PLANT CODE, LUTON, ENGLAND 1997 GM sourced
LUU Engine Flexible Fuel,(gas/alc),4 Cyl,1.4l,mfi,dohc,e-flex,fam 0 — Reference
LUV Engine Gas, 4 Cyl, 1.4l, Mfi, Dohc, Turbo, Vvt, Alum, Gme E85 Max — Reference
LUW Engine Gas/ethanol, 4 Cyl, 1.8l, Mfi, 103kw, Dohc, E85 — Reference
LUZ Engine Diesel, 2.0l, Cri, L4, Dohc, Vgt — Reference
LV0 P, ENG, M, ENGINE, DIESEL, 4 CYL, 4.8L, DI, L4, OHC, 145KW, TURBO, ISUZU, 124 E, 8 — Provisional
LV1 P, ENG, M, ENGINE, GAS, 4 CYL, 3.0L, OHC this code has more than one documented meaning — filter by year 1998 GM sourced
LV2 P, ENG, M, ENGINE, DIESEL, 6 CYL, 3.0L, DI, V6, DOHC, TURBO,, 11008 — GM sourced
LV3 4.3-liter gasoline engine 2019 GM sourced
LV4 P, ENG, M, ENGINE, GAS, 6 CYL, 3.4L, SFI, V6, 60 DEGREES, GM this code has more than one documented meaning — filter by year 1999 GM sourced
LV6 P, ENG, M, ENGINE, GAS, 4 CYL, 1.8L, MFI this code has more than one documented meaning — filter by year 1990 GM sourced
LV7 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.2L, CRI, L4, TURBO DI, DOHC 1999 GM sourced
LV8 P, ENG, M, ENGINE, GAS, 4 CYL, 1.5L, MFI, SOHC, DAEWOO 1998 GM sourced
LV9 P, ENG, M, ENGINE, GAS, 4 CYL, 1.8L this code has more than one documented meaning — filter by year 1997 GM sourced
LVA P, GRS, R, GOVERNOR, VEHICLE SPEED - 60 MPH this code has more than one documented meaning — filter by year 1989 GM sourced
LVC Engine Diesel, 4 Cyl, 2.8l, Cri, Dohc, Turbo, Sento — Reference
LVG C, EMISSION OVERRIDE, ENGINE PREBUILD 1993 GM sourced
LVH C, FLO, R, FILTER, OIL, FRAM, BY-PASS TYPE 1995 GM sourced
LVJ C, FILTER ENGINE, DEX COOLANT this code has more than one documented meaning — filter by year 1995 GM sourced
LVL Engine Diesel, 4 Cyl, 1.6l, Cri, Dohc, Vgt, 103kw — Reference
LVM Engine Diesel, 4 Cyl, 1.6l, Cri, Dohc, Fgt, 81kw — Reference
LVP Engine Gas, 4 Cyl, 1.6l, Sidi, Turbo, Dohc, Vvt, Ho, 147 Kw, Gme — Reference
LVR P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 170 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVS P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 200 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVT P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 195 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVU P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 300 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVW P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 165 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVX P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 185 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVY P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 215 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LVZ P, PWO, M, POWER OPTION, CATERPILLAR 3116, 6.6L, 250 GROSS HP @ 2,600 RPM this code has more than one documented meaning — filter by year 1998 GM sourced
LW0 Engine,1.6l(1.6-5),l4(duel Overhead Cam) — Reference
LW1 P, ENG, M, ENGINE, DIESEL, 4 CYL, 1.5L, L4, OPEL 1998 Provisional
LW2 P, ENG, M, ENGINE, NATURAL GAS, 6 CYL, 3.6L, SFI, V6, ALUM, 60 DEG, GM, 10530 — GM sourced
LW3 P, ENG, M, ENGINE, GAS, 3 CYL, 1.0L, MFI, DOHC 1994 Provisional
LW4 P, ENG, M, ENGINE, GAS, 4 CYL, 1.2L, MFI, DOHC 1994 Provisional
LW5 P, ENG, M, ENGINE, GAS, 6 CYL, 3.0L, MFI, V6, TURBO, DOHC, OPEL 1998 GM sourced
LW6 P, ENG, M, ENGINE, GAS, 4 CYL, 3.0L, TBI this code has more than one documented meaning — filter by year 1994 GM sourced
LW7 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.3L, L4 1996 GM sourced
LW8 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.2L, L4, TURBO, HOL 1996 Provisional
LW9 P, ENG, M, ENGINE, GAS, 6 CYL, 3.0L, SFI, V6, HO, CHINA this code has more than one documented meaning — filter by year 1997 GM sourced
LWC Engine Gas, 4 Cyl, 1.6l, Sidi, Turbo, Dohc, Vvt, Ho, Fam 1, Gen 4, Gme — Reference
LWD Engine Gas, 4 Cyl, 1.2l, Mfi, Dohc, 51kw — Reference
LWE Engine Gas, 4 Cyl, 1.8l, Mfi, Dohc, Vvt, 103 Kw, Gme — Reference
LWN Engine Diesel, 2.8l, Di, L4, Dohc, Turbo, Euro4, 140kw, G Mna — Reference
LWR Engine LP Gas, 6 Cyl, 3.6l, Mfi, V6, Vvt, Alum, 196kw — Reference
LX0 P, ENG, M, ENGINE, DIESEL, 6 CYL, 6.6L, L6, TURBO this code has more than one documented meaning — filter by year 1988 GM sourced
LX1 P, ENG, M, ENGINE, GAS, 4 CYL, 1.3L, DI, DOHC, OPEL 1999 Provisional
LX2 P, ENG, M, ENGINE, GAS, 8.2L, (502 CID) MARINE, 20903 — GM sourced
LX3 P, ENG, M, ENGINE, GAS, 4 CYL, 1.4L, 1BBL (EO) 1997 GM sourced
LX4 P, ENG, M, ENGINE, ALCOHOL, 4 CYL, 1.4L, 2BBL, L4, BRA 1996 Provisional
LX5 P, ENG, M, ENGINE, GAS, 6 CYL, 3.5L, MFI, V6, DOHC this code has more than one documented meaning — filter by year 1998 GM sourced
LX6 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.8L, DI, L4, TURBO, RENAULT 1998 Provisional
LX7 P, ENG, M, ENGINE, DIESEL, 4 CYL, 4.0L, L4, TURBO, MWM 1998 GM sourced
LX8 P, ENG, M, ENGINE, GAS, 4 CYL, 2.0L, MFI, DI, DOHC, L4, TURBO-HIGH, ALUM, SAAB 1999 GM sourced
LX9 P, ENG, M, ENGINE, GAS, 6 CYL, 3.5L, SFI, V6, GM this code has more than one documented meaning — filter by year 1999 GM sourced
LXT Engine Gas, 4 Cyl, 1.6l, Mfi, Dohc, 80kw (gmdat) — Reference
LXV Engine Gas, 4 Cyl, 1.6l, Mfi, Dohc, Pt-jv, Variable Camshaft Timing — Reference
LY0 P, ENG, M, ENGINE, GAS, 6 CYL, 2.6L, MFI, L6 1998 Provisional
LY1 P, ENG, M, ENGINE, GAS, 4 CYL, 1.3L, MFI 1998 GM sourced
LY2 P, ENG, M, ENGINE, GAS, 8 CYL, 4.8L, SFI, IRON, GM, 20903 — GM sourced
LY3 P, ENG, M, ENGINE, GAS, 4 CYL, 2.4L, MFI, L4, ALUM, DOHC, GM 1998 GM sourced
LY4 P, ENG, M, ENGINE, GAS, 4 CYL, 1.2L, 1BBL this code has more than one documented meaning — filter by year 1997 GM sourced
LY5 5.3-liter iron-block V8 engine with Active Fuel Management 2007–2011 GM sourced
LY6 P, ENG, M, ENGINE, GAS, 8 CYL, 6.0L, SFI, IRON, GM, 20903 — GM sourced
LY7 P, ENG, M, ENGINE, GAS, 6 CYL, 3.6L, SFI, V6, ALUM, 60 DEGREES, GM this code has more than one documented meaning — filter by year 1999 GM sourced

Using the master list

This is the full GM RPO code list we hold — every Regular Production Option code in the database, searchable by code or by description and filterable to a single model year. Most RPO lists on the internet run to a couple of hundred codes copied from one service manual. This one holds 24,366, and tells you where each meaning came from.

What an RPO code is

RPO stands for Regular Production Option. Every piece of factory equipment on a GM vehicle carries a three-character code, and the ones fitted to your truck are printed on the Service Parts Identification label in the glove box or on the door jamb. G80 is a locking differential, Z71 is an off-road suspension package, K05 is a block heater.

They matter because they are what the factory actually built, not what a listing claims. If you are buying a truck, the label settles the argument. If you are ordering parts, the axle and transmission codes decide which part fits.

Why the same code means different things

GM has reused these codes for decades and across every division. A code that means one thing on a 1978 pickup can mean something unrelated on a 2015 SUV, and plenty of entries in circulation come from bulk listings with no year and no document behind them.

So every entry here is labelled with where it came from. GM sourced means we hold an actual GM document for it. GM dated means it comes from the option master with a date attached. Reference means it is in general circulation with nothing dated behind it — still useful, but treat it as a lead rather than a fact. Filtering by your model year is the single best way to get an answer you can rely on.

Read the codes off your own label

If you have the sticker in front of you, the RPO decoder will read a photo of it and decode every code at once, checked against your model year.

FullSizeChevy.com is not affiliated with, endorsed by, or sponsored by General Motors. Chevrolet, GMC, Cadillac, Silverado, Sierra and related marks are trademarks of General Motors LLC and are used here only to identify applicable vehicles. RPO meanings vary by model year, platform and configuration — verify against your own label before buying parts.

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