GM RPO Code Database

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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 401–500 of 931 codes beginning with O. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
OL4 P, LOCAL, GM OF EUROPE OL4 1992 GM sourced
OL5 P, LOCAL, GM OF EUROPE OL5 1992 GM sourced
OL6 P, LOCAL, GM OF EUROPE OL6 1992 GM sourced
OL7 P, LOCAL, GM OF EUROPE OL7 1992 GM sourced
OL8 P, LOCAL, GM OF EUROPE OL8 1992 GM sourced
OL9 P, LOCAL, GM OF EUROPE OL9 1992 GM sourced
OLA P, LOCAL, GM OF EUROPE OLA 1992 GM sourced
OLB P, LOCAL, GM OF EUROPE OLB 1992 GM sourced
OLC P, LOCAL, GM OF EUROPE OLC 1992 GM sourced
OLE P, LOCAL, GM OF EUROPE OLE 1992 GM sourced
OLF P, PLT, R, PLANT CODE, LANSING, MI, USA (CRAFT CENTER) 1998 GM sourced
OLG P, LOCAL, GM OF EUROPE OLG 1992 GM sourced
OLH P, LOCAL, GM OF EUROPE OLH 1992 GM sourced
OLI P, LOCAL, GM OF EUROPE OLI 1992 GM sourced
OLJ P, LOCAL, GM OF EUROPE OLJ 1992 GM sourced
OLK P, LOCAL, GM OF EUROPE OLK 1992 GM sourced
OLL P, LOCAL, GM OF EUROPE OLL 1992 GM sourced
OLM P, LOCAL, GM OF EUROPE OLM 1992 GM sourced
OLN P, LOCAL, GM OF EUROPE OLN 1992 GM sourced
OLO P, LOCAL, GM OF EUROPE OLO 1992 GM sourced
OLP P, LOCAL, GM OF EUROPE OLP 1992 GM sourced
OLQ P, LOCAL, GM OF EUROPE OLQ 1992 GM sourced
OLT P, LOCAL, GM OF EUROPE OLT 1992 GM sourced
OLU P, LOCAL, GM OF EUROPE OLU 1992 GM sourced
OLV P, LOCAL, GM OF EUROPE OLV 1992 GM sourced
OLW P, LOCAL, GM OF EUROPE OLW 1992 GM sourced
OLX P, LOCAL, GM OF EUROPE OLX 1992 GM sourced
OLY P, LOCAL, GM OF EUROPE OLY 1992 GM sourced
OLZ P, LOCAL, GM OF EUROPE OLZ 1992 GM sourced
OM0 P, LOCAL, GM OF EUROPE OM0 1992 GM sourced
OM1 P, LOCAL, GM OF EUROPE OM1 1992 GM sourced
OM2 P, LOCAL, GM OF EUROPE OM2 1992 GM sourced
OM3 P, LOCAL, GM OF EUROPE OM3, 20220 — Provisional
OM4 P, LOCAL, GM OF EUROPE OM4 1992 GM sourced
OM5 P, LOCAL, GM OF EUROPE OM5 1992 GM sourced
OM6 P, LOCAL, GM OF EUROPE OM6 1992 GM sourced
OM7 P, LOCAL, GM OF EUROPE OM7 1992 GM sourced
OM8 P, LOCAL, GM OF EUROPE OM8 1992 GM sourced
OM9 P, LOCAL, GM OF EUROPE OM9 1992 GM sourced
OMA P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, BASE VERSION, 518 P, 0, 0, A — Provisional
OMB P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, SHORT WHEELBASE, STD ROOF, 3,300 KG 1998 Provisional
OMC P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, SHORT WHEELBASE, STD ROOF, 3,500 KG 1998 Provisional
OMD P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, SHORT WHEELBASE, HIGH ROOF, 3,300 KG 1998 Provisional
OME P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, SHORT WHEELBASE, HIGH ROOF, 3,500 KG 1998 Provisional
OMF P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, LONG WHEELBASE, HIGH ROOF, 2,800 KG 1998 Provisional
OMG P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, LONG WHEELBASE, HIGH ROOF, 3,300 KG 1998 Provisional
OMH P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, LONG WHEELBASE, HIGH ROOF, 3,500 KG 1998 Provisional
OMI P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, LONG WHEELBASE, MAXI ROOF, 3,500 KG 1998 Provisional
OMJ P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, EXTRA LONG WHEELBASE, NO ROOF, 3,500 KG 1998 Provisional
OMK P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, EXTRA LONG WHEELBASE, STD ROOF, 3,500 KG 1998 Provisional
OML P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, EXTRA LONG WHEELBASE, HIGH ROOF, 3,500 KG 1998 Provisional
OMN P, MSM, R, MODEL CONVERSION, RENAULT TRUCK, EXTRA LONG WHEEL, BASE, MAXI ROOF, 3500 KG 1998 Provisional
OMO P, LOCAL, GM OF EUROPE OMO 1998 GM sourced
OMP P, LOCAL, GM OF EUROPE OMP 1998 GM sourced
OMQ P, LOCAL, GM OF EUROPE OMQ 1998 GM sourced
OMR P, LOCAL, GM OF EUROPE OMR 1998 GM sourced
OMS P, LOCAL, GM OF EUROPE OMS 1998 GM sourced
OMT P, LOCAL, GM OF EUROPE OMT 1998 GM sourced
OMU P, LOCAL, GM OF EUROPE OMU 1998 GM sourced
OMV P, LOCAL, GM OF EUROPE OMV 1998 GM sourced
OMW P, LOCAL, GM OF EUROPE OMW 1998 GM sourced
OMX P, LOCAL, GM OF EUROPE OMX 1998 GM sourced
OMY P, LOCAL, GM OF EUROPE OMY 1998 GM sourced
OMZ P, LOCAL, GM OF EUROPE OMZ 1998 GM sourced
ON0 P, LOCAL, GM OF EUROPE ON0 1992 GM sourced
ON1 P, LOCAL, GM OF EUROPE ON1, 20220 — Provisional
ON2 P, LOCAL, GM OF EUROPE ON2 1992 GM sourced
ON3 P, LOCAL, GM OF EUROPE ON3 1992 GM sourced
ON4 P, LOCAL, GM OF EUROPE ON4 1992 GM sourced
ON5 P, LOCAL, GM OF EUROPE ON5 1992 GM sourced
ON6 P, LOCAL, GM OF EUROPE ON6 1992 GM sourced
ON7 P, LOCAL, GM OF EUROPE ON7 1992 GM sourced
ON8 P, LOCAL, GM OF EUROPE ON8 1992 GM sourced
ON9 P, LOCAL, GM OF EUROPE ON9 1992 GM sourced
ONA P, LOCAL, GM OF EUROPE (ONA), 217 — Provisional
ONB P, LOCAL, GM OF EUROPE (ONB), 217 — Provisional
ONC P, LOCAL, GM OF EUROPE (ONC), 217 — Provisional
OND P, LOCAL, GM OF EUROPE (OND), 217 — Provisional
ONE P, LOCAL, GM OF EUROPE (ONE), 217 — Provisional
ONF P, LOCAL, GM OF EUROPE (ONF), 217 — Provisional
ONG P, LOCAL, GM OF EUROPE (ONG), 217 — Provisional
ONH P, LOCAL, GM OF EUROPE (ONH), 217 — Provisional
ONI P, LOCAL, GM OF EUROPE (ONI), 217 — Provisional
ONJ P, LOCAL, GM OF EUROPE (ONJ), 217 — Provisional
ONK P, LOCAL, GM OF EUROPE (ONK), 217 — Provisional
ONL P, LOCAL, GM OF EUROPE (ONL), 217 — Provisional
ONM P, LOCAL, GM OF EUROPE (ONM), 217 — Provisional
ONN P, LOCAL, GM OF EUROPE (ONN), 217 — Provisional
ONO P, LOCAL, GM OF EUROPE (ONO), 217 — Provisional
ONP P, LOCAL, GM OF EUROPE (ONP), 217 — Provisional
ONQ P, LOCAL, GM OF EUROPE (ONQ), 217 — Provisional
ONR P, LOCAL, GM OF EUROPE (ONR), 217 — Provisional
ONS FAMILY CODE, COMMUNICATION SYSTEM, 211 — Provisional
ONT P, LOCAL, GM OF EUROPE (ONT), 217 — Provisional
ONU P, LOCAL, GM OF EUROPE (ONU), 217 — Provisional
ONV P, LOCAL, GM OF EUROPE (ONV), 217 — Provisional
ONW P, LOCAL, GM OF EUROPE (ONW), 217 — Provisional
ONX P, LOCAL, GM OF EUROPE (ONX), 217 — Provisional
ONY P, LOCAL, GM OF EUROPE (ONY), 20220 — Provisional
ONZ P, LOCAL, GM OF EUROPE (ONZ), 217 — Provisional

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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