GM RPO Code Database

← All owner tools  ·  Decode your own SPID label with the GM RPO decoder

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 101–200 of 625 codes beginning with L. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
L82 5.3L EcoTec3 V8 with Direct Injection and Variable Valve Timing 2021 GM sourced
L83 V8 5.3/325 Active fuel management FlexFuel 2020 GM sourced
L84 Engine, 5.3L EcoTec3 V8 2026 GM sourced
L85 250 CID L6 (4 BARREL CARB) — Provisional
L86 Engine, 6.2L EcoTec3 V8 2019 Reference
L87 Engine, 6.2L EcoTec3 V8 2026 GM sourced
L88 P, ENG, M, ENGINE, GAS, 4 CYL, 2.3L, MFI, TURBO, DOHC 1998 GM sourced
L89 P, ENG, M, ENGINE, GAS, 4 CYL, 1.4L, 1BBL, OHC 1997 Provisional
L8T Engine, 6.6L V8 2026 GM sourced
L8X Engine Gas, 8 Cyl, 5.3l, Sidi Vvt, Afm, Livc, E85 Max, Alum, GM — Reference
L90 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.5L, L4, RENAULT 1997 Provisional
L91 P, ENG, M, ENGINE, GAS, 4 CYL, 1.6L, MFI, DOHC 1997 GM sourced
L92 P, ENG, M, ENGINE, GAS, 8 CYL, 6.0L, SFI, ALUM, CYL DEACTIVATION, HO GM, 818 — GM sourced
L93 P, ENG, M, ENGINE, DIESEL, 6 CYL, 2.5L, TURBO 1996 GM sourced
L94 6.2-liter V8 engine with Active Fuel Management 2007–2011 GM sourced
L95 P, ENG, M, ENGINE, GAS, 4 CYL, 1.4L, MFI, DOHC 1990 GM sourced
L96 Engine, Vortec 6.0L Variable Valve Timing V8 SFI, E85-compatible, FlexFuel 2019 Reference
L97 P, ENG, M, ENGINE, GAS, 4 CYL, 1.8L, MFI, DOHC, REDUCED OUTPUT, 707 E, 0 — Provisional
L98 Engine Gas, 8 Cyl, 6.0l, Sfi, Alum, GM this code has more than one documented meaning — filter by year — Reference
L99 Engine Gas, 8 Cyl, 4.3l, Mfi this code has more than one documented meaning — filter by year — Reference
L9H 6.2-liter V8 engine used in listed GMT900 trucks/SUVs 2011–2013 GM sourced
LA0 P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, DI, ALUM, DOHC, PT-JV, 10620 E, 0 — Provisional
LA1 P, ENG, M, ENGINE, GAS, 6 CYL, 3.4L, MFI, HO, GM 1997 GM sourced
LA2 P, ENG, M, ENGINE, GAS, 4 CYL, 1.0L, TBI, OHC 1992 GM sourced
LA3 P, ENG, M, ENGINE, GAS, 6 CYL, 3.2L, MFI, DOHC, OPEL 1999 GM sourced
LA4 P, ENG, M, ENGINE, GAS, 6 CYL, 3.2L, MFI, SOHC 1997 Provisional
LA5 P, ENG, M, ENGINE, DIESEL, 6 CYL, 4.2L, TURBO, MWM 1996 GM sourced
LA6 P, ENG, M, ENGINE, GAS, 6 CYL, 3.0L, MFI, V6, OHC 1992 Provisional
LA7 P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, DI, ALUM, DOHC, OPEL, 10816 E, 0 — GM sourced
LA8 P, ENG, M, ENGINE, DIESEL, 4 CYL, 236 CID L4, *PERKINS* Q.20-4* 1997 Provisional
LA9 P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, MFI, DOHC 1992 GM sourced
LAA P, PLT, R, PLANT CODE, LANSING, MI, USA (BODY ASM C-LINE) 1998 GM sourced
LAB P, PLT, R, PLANT CODE, LANSING, MI, USA (BODY ASM M-LINE) 1998 GM sourced
LAC P, MODULE, CRUISE CONTROL 1994 GM sourced
LAE P, LOCK CONTROL, STEERING WHL 1998 Provisional
LAF Engine Gas, 4 Cyl, 2.4l, Sidi, Dohc, Vvt, Alum, GM — Reference
LAG Family Code, Label 1988 GM dated
LAH P, IDENTIFICATION, HYBRID ENGINE, 612 E, 1, 1, A — Provisional
LAL P, PLT, R, PLANT CODE, LANSING, MI, USA (GRAND RIVER), 906 E, 4 — GM sourced
LAN P, PLT, R, PLANT CODE, LANSING, MI, USA (CHASSIS ASM M-LINE) this code has more than one documented meaning — filter by year 1998 GM sourced
LAP Engine Gas, 4 Cyl, 2.2l, Mfi, Vvt, Alum, Dohc — Reference
LAQ Engine Gas, 4 Cyl, 1.2l, Mfi, L4, Dohc, Sgmw — Reference
LAS P, PLT, R, PLANT CODE, LANSING, MI, USA (CHASSIS ASM C-LINE) 1998 Provisional
LAT Engine Gas, 4 Cyl, 2.4l, Mfi, Alum, Dohc, Bas, Ecotec — Reference
LAU Engine Gas, 6 Cyl, 2.8l, Sfi, V6, Dohc, Turbo Ho, Alumn GM — Reference
LAX Engine Gas, 4 Cyl, 2.4l, Sidi, Dohc, Vvt, Alum, Toyota — Reference
LAY Engine Gas, 4 Cyl, 1.8l, Sidi, Dohc, Vvt, Alum, Toyota — Reference
LB0 P, ENG, M, ENGINE, GAS, 4 CYL, 1.6L, MFI, DOHC, GM-JV, 10621 E, 0 — Provisional
LB1 P, ENG, M, ENGINE, GAS, 4 CYL, 2.0L, MFI, ALUM, DOHC, OPEL 1998 GM sourced
LB2 P, ENG, M, ENGINE, GAS, 4 CYL, 1.949L, ISUZU 1984 Provisional
LB3 P, ENG, M, ENGINE, ALCOHOL, 4 CYL, 1.6L, MFI, L4, OHC, BRA 1998 Provisional
LB4 4.3-liter V6 electronic-fuel-injection engine 1990 GM sourced
LB5 P, ENG, M, ENGINE, DIESEL, 6 CYL, 3.0L, CRI, V6, DOHC, TURBO, ISUZU this code has more than one documented meaning — filter by year 1998 GM sourced
LB6 P, ENG, M, ENGINE, GAS, 6 CYL, 2.8L, MFI, V6, TRANSVERSE 1984 GM sourced
LB7 P, ENG, M, ENGINE, DIESEL, 8 CYL, 6.6L, DI, V8, TURBO, HO, DURAMAX, 10312 — GM sourced
LB8 P, ENG, M, ENGINE, GAS, 6 CYL, 2.5L, SFI, V6, CHINA this code has more than one documented meaning — filter by year 1998 GM sourced
LB9 P, ENG, M, ENGINE, GAS, 8 CYL, 5.0L, MFI, HO 1985 GM sourced
LBF Engine Gas, 3 Cyl, .08l, Mpi, Sohc, Gmdat — Reference
LBG Engine Gas, 3cyl, .08l, Mpi, Dohc, Gmdat — Reference
LBH Engine Gas, 4 Cyl, 1.5l, Mfi, Dohc, Gmdat — Reference
LBJ Engine Gas, 4 Cyl, 1.4l, Mfi, Sohc, Gmdat — Reference
LBK Engine Gas, 6 Cyl, In-line, 2.5l, Mfi, Dohc, Gmdat — Reference
LBL Family Code, Language Label 1988 GM dated
LBM Engine Gas, 6 Cyl, In-line, 2.0l, Mfi, Dohc, Gmdat — Reference
LBN Engine Propane Gas, 4 Cyl, 2.0l, Mfi, Dohc, Alum — Reference
LBS Engine Diesel, 4 Cyl, 1.9l, L4, Cpi, Turbo, Ho, Dohc, 121 Kw, Fiat — Reference
LBT P, ENG, M, ENGINE, PROPANE GAS, 4 CYL, 1.6L, MFI, DOHC, 10306 — Provisional
LBU P, ENG, M, ENGINE, PROPANE GAS, 4 CYL, 1.4L, MFI, DOHC, 10306 — Provisional
LBV P, ENG, M, ENGINE, PROPANE GAS, 4 CYL, 1.8L, MFI, DOHC, 10306 — Provisional
LBW Engine Gas, 6 Cyl, 2.8l, Sfi, V6, Turbo Low, Alum, GM — Reference
LBY Engine Diesel, 4 Cyl, 2.0l, L4, Cpi, Twin Turbo, Dohc Vvt, 140 KW , Gme — Reference
LBZ 6.6-liter high-output Duramax turbo-diesel V8 2007 GM sourced
LC0 P, ENG, M, ENGINE, GAS, 4 CYL, 1.4L, TBI, SOHC this code has more than one documented meaning — filter by year 1995 GM sourced
LC1 P, ENG, M, ENGINE, DIESEL, 4 CYL, 4.4L, DI, L4, TURBO, OHC, ISUZU this code has more than one documented meaning — filter by year 1998 GM sourced
LC2 P, ENG, M, ENGINE, GAS, 8 CYL, 4.4L, MFI, V8, ALUM, DOHC, GM, 20607 — GM sourced
LC3 P, ENG, M, ENGINE, GAS, 8 CYL, 4.2L, MFI, V8, SC, ALUM, DOHC, GM, 10813 — GM sourced
LC4 P, ENG, M, ENGINE, DIESEL, 6 CYL, 7.8L, DI, TURBO-HIGH, ISUZU this code has more than one documented meaning — filter by year 1997 GM sourced
LC5 P, ENG, M, ENGINE, GAS, 4 CYL, 1.8L, MFI, OHC 1994 GM sourced
LC6 P, ENG, M, ENGINE, DIESEL, 6 CYL, 15.2L, DI, L6, OHC, 285KW, ISUZU, 10124 — GM sourced
LC7 P, ENG, M, ENGINE, DIESEL, 6 CYL, 19.0L, DI, L6, OHC, 265KW, ISUZU, 10123 — GM sourced
LC8 6.0-liter flex-fuel V8 gasoline engine 2016 GM sourced
LC9 5.3-liter V8 engine used in listed GMT900 trucks/SUVs 2011–2013 GM sourced
LCC FAMILY CODE, LUGGAGE CARRIER CLR, 21107 — Provisional
LCE Family Code, Lock Control, Entry 1997 GM dated
LCF P, ENG, M, ENGINE, GAS, 4 CYL, 2.0L, MFI, TURBO, DOHC, REDUCED OUTPUT, 10815 E, 0 — Provisional
LCG P, ENG, M, ENGINE, DIESEL, 6 CYL, 2.7L, CRI, V6, DOHC, TURBO, ISUZU, 10712 E, 0 — Provisional
LCH P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, DI, ALUM, DOHC, OPEL,, 10816 E, 0 — Provisional
LCJ Engine Diesel, 6 Cyl, 2.9l, Cri, V6, Dohc, Turbo VM Mortori, 184kw — Reference
LCP Engine Propane Gas, 4 Cyl, 1.0l, Mfi, Dohc — Reference
LCR Family Code, Lock Control, RR Cmpt 1997 GM dated
LCS Engine Gas, 6 Cyl, 3.6l, Sidi, V6, Dohc, Livc, Vvt, Alum GM — Reference
LCT P, ENG, M, ENGINE, GAS, 8 CYL, 5.7L, SFI, ALUM, ER, GM, 20423 — GM sourced
LCU Engine Gas, 4 Cyl, 1.4l, Mfi, Dohc, Pda, Fam A/b — Reference
LCV Engine Gas, 4 Cyl, 2.5l, L4, Sidi, Dohc, Vvt, E85 Max, Alum, GM — Reference
LD0 P, ENG, M, ENGINE, DIESEL, 4 CYL, 4.8L, DI, L4, OHC, 130KW, TURBO, ISUZU, 124 E, 8 — Provisional
LD1 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.0L, L4, TURBO-HIGH, HO, OHC 1998 Provisional
LD2 P, ENG, M, ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC this code has more than one documented meaning — filter by year 1988 GM sourced
LD3 P, ENG, M, ENGINE, DIESEL, 4 CYL, 2.0L, L4, TURBO-LOW, HO, OHC, OPEL 1998 Provisional
LD4 P, ENG, M, ENGINE, GAS, 6 CYL, 4.1L, MFI this code has more than one documented meaning — filter by year 1992 GM sourced
LD5 P, ENG, M, ENGINE, GAS, 4 CYL, 2.2L, MFI, L4, TURBO-LOW, ALUM, DOHC, SAAB this code has more than one documented meaning — filter by year 1998 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.

Scroll to Top