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 1–100 of 931 codes beginning with O. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
O4U For This App, This IS The OE Service Part Due TO Supersession Activity — Reference
OA0 P, LOCAL, GM OF EUROPE OA0 1992 GM sourced
OA1 P, LOCAL, GM OF EUROPE OA1, 20220 — Provisional
OA2 P, LOCAL, GM OF EUROPE OA2 1992 GM sourced
OA3 P, LOCAL, GM OF EUROPE OA3 1992 GM sourced
OA4 P, LOCAL, GM OF EUROPE OA4, 11105 — Provisional
OA5 P, LOCAL, GM OF EUROPE OA5 1992 GM sourced
OA6 P, LOCAL, GM OF EUROPE OA6 1992 GM sourced
OA7 P, LOCAL, GM OF EUROPE OA7, 20220 — Provisional
OA8 P, LOCAL, GM OF EUROPE OA8, 20220 — Provisional
OA9 P, LOCAL, GM OF EUROPE OA9 1992 GM sourced
OAA P, LOCAL, GM OF EUROPE OAA 1992 GM sourced
OAB P, LOCAL, GM OF EUROPE OAB 1992 GM sourced
OAC P, LOCAL, GM OF EUROPE OAC 1992 GM sourced
OAD P, LOCAL, GM OF EUROPE OAD 1992 GM sourced
OAE P, LOCAL, GM OF EUROPE OAE 1992 GM sourced
OAF P, LOCAL, GM OF EUROPE OAF 1992 GM sourced
OAG P, LOCAL, GM OF EUROPE OAG 1992 GM sourced
OAH P, LOCAL, GM OF EUROPE OAH this code has more than one documented meaning — filter by year 1992 GM sourced
OAI P, LOCAL, GM OF EUROPE OAI 1992 GM sourced
OAJ P, LOCAL, GM OF EUROPE OAJ this code has more than one documented meaning — filter by year 1992 GM sourced
OAK P, LOCAL, GM OF EUROPE OAK this code has more than one documented meaning — filter by year 1992 GM sourced
OAL P, LOCAL, GM OF EUROPE OAL 1992 GM sourced
OAM P, LOCAL, GM OF EUROPE OAM 1992 GM sourced
OAN P, LOCAL, GM OF EUROPE OAN this code has more than one documented meaning — filter by year 1992 GM sourced
OAO P, LOCAL, GM OF EUROPE OAO 1992 GM sourced
OAP P, IDENTIFICATION, PILOT (OPEL) this code has more than one documented meaning — filter by year 1998 GM sourced
OAQ P, IDENTIFICATION, PLANT PILOT this code has more than one documented meaning — filter by year 1997 GM sourced
OAR P, IDENTIFICATION, PRE-PRODUCTION ('BUCKET' BATCH BUILD PROCESS) this code has more than one documented meaning — filter by year 1997 GM sourced
OAS P, LOCAL, GM OF EUROPE OAS 1992 GM sourced
OAT P, LOCAL, GM OF EUROPE OAT this code has more than one documented meaning — filter by year 1992 GM sourced
OAU P, LOCAL, GM OF EUROPE OAU 1992 GM sourced
OAV P, LOCAL, GM OF EUROPE OAV this code has more than one documented meaning — filter by year 1992 GM sourced
OAW P, LOCAL, GM OF EUROPE OAW 1992 GM sourced
OAX P, LOCAL, GM OF EUROPE OAX 1992 GM sourced
OAY P, LOCAL, GM OF EUROPE OAY 1992 GM sourced
OAZ P, LOCAL, GM OF EUROPE OAZ 1992 GM sourced
OB0 P, LOCAL, GM OF EUROPE OB0 1992 GM sourced
OB1 P, LOCAL, GM OF EUROPE OB1 1992 GM sourced
OB2 P, LOCAL, GM OF EUROPE OB2 1992 GM sourced
OB3 P, LOCAL, GM OF EUROPE OB3 1992 GM sourced
OB4 P, LOCAL, GM OF EUROPE OB4 1992 GM sourced
OB5 P, LOCAL, GM OF EUROPE OB5 1992 GM sourced
OB6 P, LOCAL, GM OF EUROPE OB6 1992 GM sourced
OB7 P, LOCAL, GM OF EUROPE OB7 1992 GM sourced
OB8 P, LOCAL, GM OF EUROPE OB8, 20220 — Provisional
OB9 P, LOCAL, GM OF EUROPE OB9 1992 GM sourced
OBA P, LOCAL, GM OF EUROPE OBA 1992 GM sourced
OBB P, LOCAL, GM OF EUROPE OBB 1992 GM sourced
OBC P, LOCAL, GM OF EUROPE OBC 1992 GM sourced
OBD P, LOCAL, GM OF EUROPE OBD 1992 GM sourced
OBE P, LOCAL, GM OF EUROPE OBE 1992 GM sourced
OBF P, LOCAL, GM OF EUROPE OBF 1992 GM sourced
OBG P, LOCAL, GM OF EUROPE OBG 1992 GM sourced
OBH P, LOCAL, GM OF EUROPE OBH 1992 GM sourced
OBI P, LOCAL, GM OF EUROPE OBI 1992 GM sourced
OBJ P, LOCAL, GM OF EUROPE OBJ 1992 GM sourced
OBK P, LOCAL, GM OF EUROPE OBK 1992 GM sourced
OBL P, LOCAL, GM OF EUROPE OBL 1992 GM sourced
OBM P, LOCAL, GM OF EUROPE OBM 1992 GM sourced
OBN P, LOCAL, GM OF EUROPE OBN 1992 GM sourced
OBO P, LOCAL, GM OF EUROPE OBO 1992 GM sourced
OBP P, LOCAL, GM OF EUROPE OBP 1992 GM sourced
OBQ P, LOCAL, GM OF EUROPE OBQ 1992 GM sourced
OBR P, LOCAL, GM OF EUROPE OBR 1992 GM sourced
OBS P, LOCAL, GM OF EUROPE OBS 1992 GM sourced
OBT P, LOCAL, GM OF EUROPE OBT 1992 GM sourced
OBU P, LOCAL, GM OF EUROPE OBU 1992 GM sourced
OBV P, LOCAL, GM OF EUROPE OBV 1992 GM sourced
OBW P, LOCAL, GM OF EUROPE OBW 1992 GM sourced
OBX P, LOCAL, GM OF EUROPE OBX 1992 GM sourced
OBY P, LOCAL, GM OF EUROPE OBY 1992 GM sourced
OBZ P, LOCAL, GM OF EUROPE OBZ 1992 GM sourced
OC0 P, LOCAL, GM OF EUROPE OC0 1992 GM sourced
OC1 P, LOCAL, GM OF EUROPE OC1, 20220 — Provisional
OC2 P, LOCAL, GM OF EUROPE OC2 1992 GM sourced
OC3 P, LOCAL, GM OF EUROPE OC3 1992 GM sourced
OC4 P, LOCAL, GM OF EUROPE OC4 1992 GM sourced
OC5 P, LOCAL, GM OF EUROPE OC5 1992 GM sourced
OC6 P, LOCAL, GM OF EUROPE OC6 1992 GM sourced
OC7 P, LOCAL, GM OF EUROPE OC7, 21014 — Provisional
OC8 P, LOCAL, GM OF EUROPE OC8 1992 GM sourced
OC9 P, LOCAL, GM OF EUROPE OC9 1992 GM sourced
OCA P, LOCAL, GM OF EUROPE OCA, 225 — Provisional
OCB P, LOCAL, GM OF EUROPE OCB 1992 GM sourced
OCC P, LOCAL, GM OF EUROPE OCC 1992 GM sourced
OCD P, LOCAL, GM OF EUROPE OCD 1992 GM sourced
OCE P, LOCAL, GM OF EUROPE OCE 1992 GM sourced
OCF P, LOCAL, GM OF EUROPE OCF 1992 GM sourced
OCG P, LOCAL, GM OF EUROPE OCG 1992 GM sourced
OCH P, LOCAL, GM OF EUROPE OCH 1992 GM sourced
OCI P, LOCAL, GM OF EUROPE OCI 1992 GM sourced
OCJ P, LOCAL, GM OF EUROPE OCJ 1992 GM sourced
OCK P, LOCAL, GM OF EUROPE OCK 1992 GM sourced
OCL P, LOCAL, GM OF EUROPE OCL 1992 GM sourced
OCM P, LOCAL, GM OF EUROPE OCM 1992 GM sourced
OCN P, LOCAL, GM OF EUROPE OCN 1992 GM sourced
OCO P, LOCAL, GM OF EUROPE OCO 1992 GM sourced
OCP P, LOCAL, GM OF EUROPE OCP 1992 GM sourced
OCQ P, LOCAL, GM OF EUROPE OCQ 1992 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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