← All owner tools · Decode your own SPID label with the GM RPO decoder
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| 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 777 codes beginning with R. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| R01 | Wheel 20 X 8.5, Aluminum, 5 Spokes (y-design, Bi-color) | — | Reference |
| R02 | Wheel 16 X 6.5 Chrome Clad, Flanged | — | Reference |
| R03 | Wheel 17 X 7 Chrome Clad, Flanged | — | Reference |
| R04 | P, WHEEL SINGLE, RR this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| R05 | P, WHEEL DUAL, RR | 1991 | GM sourced |
| R07 | Wheel 18 X 8, Alum, Chrome Clad, 6 Spokes, (chev) Flanged | — | Reference |
| R08 | Wheel 18 X 8, Alum, Chrome Clad, 6 Spokes, (gmc) Flanged | — | Reference |
| R0A | Tire All P245/50r19 XL 104w BW Al3 | — | Reference |
| R0B | Tire All P245/55r18 SL 102t BW Al2 | — | Reference |
| R0C | Tire All P245/45r20 FRT XL 103y BW Hw4 & P275/40r20 | — | Reference |
| R10 | P, MANUAL, ROADSIDE SERVICE INFO | 1990 | GM sourced |
| R11 | P, VEHICLE, SERVICE TECH TRAINING CENTER this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| R12 | P, MANUAL, RADIO, DELETE | 1999 | Provisional |
| R13 | WT APPEARANCE PACKAGE - Includes (V46) Chrome front bumper, (VJH) Chrome rear bumper and (Q5U) 17 inch Bright Silver painted aluminum wheels | 2022 | GM sourced |
| R1A | P, OWM, R, OWNERS MANUAL, GIFT BOX PACKAGING - DELETE | 1998 | Provisional |
| R1B | P, IDENTIFICATION, PILOT TRIAL RUN #1 | 1998 | Provisional |
| R1C | P, IDENTIFICATION, PILOT TRIAL RUN #2 | 1998 | Provisional |
| R1D | P, IDENTIFICATION, PILOT TRIAL RUN #3 | 1998 | Provisional |
| R1E | P, VEHICLE, GENERAL MOTORS SUPPLIERS PURCHASE | 1990 | Provisional |
| R1F | P, IDENTIFICATION, PILOT TRIAL RUN #4 | 1998 | Provisional |
| R1G | P, IDENTIFICATION, PILOT TRIAL RUN #5 | 1998 | Provisional |
| R1H | P, LICENSE PLATE, RR POCKET, SPECIAL this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| R1I | P, ORNAMENTATION, DECKLID WREATH/CREST - DELUXE | 1999 | GM sourced |
| R1J | P, GRL, R, GRILLE, PAINTED W/ARGENT BACKGROUND this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| R1K | P, SGR, R, MERCHANDISED PKG, AURORA FINAL 500 COMMEMORATIVE EDITION, 20716 M 4, 4, A this code has more than one documented meaning — filter by year | — | GM sourced |
| R1L | Tire All P245/45r18-100v XL BW R/st TL Al3 | — | Reference |
| R1M | P, LAMP, FOG, JAPANESE | 1994 | GM sourced |
| R1N | P, MODULE, PCM, JAPANESE | 1998 | GM sourced |
| R1P | P, CHASSIS EQUIPMENT, HEAVY DUTY, COACHBUILDER/LIVERY | 1988 | GM sourced |
| R1Q | P, FLEET PROGRAM, COACHBUILDER CREDIT | 1991 | Provisional |
| R1R | P, FLEET PROGRAM, SPECIAL GUARANTEED DEPRECIATION | 1994 | Provisional |
| R1S | P, FLEET PROGRAM, SPECIAL BROUGHAM GUARANTEED DEPRECIATION, PHASE 2 | 1994 | Provisional |
| R1U | Export Conversion(export) this code has more than one documented meaning — filter by year | — | Reference |
| R1V | P, APP, R, APPEARANCE PACKAGE, 20904 M 6 this code has more than one documented meaning — filter by year | — | GM sourced |
| R1W | P, NOISE CONTROL, AIR CLEANER RESONATOR DUCT this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| R1X | P, NOISE CONTROL, AIR CLEANER, ECM, EXH INTER PIPE this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| R1Z | Wheel 18 X 8.0,j, FRT & 18 X 9.0,j, Rr, Aluminum, Design 2 | — | Reference |
| R20 | P, RHT, M, ROOF, HEIGHT, DELETE, 804 E 0 | — | Provisional |
| R21 | P, RHT, M, ROOF, HEIGHT, STANDARD, 804 E 0 | — | Provisional |
| R22 | P, RHT, M, ROOF, HEIGHT, HIGH, 804 E 0 | — | Provisional |
| R23 | P, RHT, M, ROOF, HEIGHT, MAXIMUM, 804 E 0 | — | Provisional |
| R25 | Appearance Package Exterior, Chrome Grille & Painted Bumper | — | Reference |
| R26 | Appearance Package Exterior, Chrome Grille & Front Bumper | — | Reference |
| R2A | P, COMPACT DISC, MAP, FRANCE | 1999 | Provisional |
| R2B | P, COMPACT DISC, MAP, AUSTRIA / SWITZERLAND | 1999 | Provisional |
| R2C | P, COMPACT DISC, MAP, UNITED KINGDOM | 1999 | Provisional |
| R2D | P, COMPACT DISC, MAP, GERMANY | 1999 | Provisional |
| R2E | P, COMPACT DISC, MAP, ITALY | 1999 | Provisional |
| R2F | P, COMPACT DISC, MAP, BELGIUM / NETHERLAND | 1999 | Provisional |
| R2G | P, COMPACT DISC, MAP, SPAIN / PORTUGAL, 10816 E 0 | — | Provisional |
| R2H | P, COMPACT DISC, MAP, SWEDEN / DENMARK, 420 E 0 | — | Provisional |
| R2I | P, APP, R, APPEARANCE PACKAGE, LINEA BLU, 1204 E 0 | — | Provisional |
| R2J | P, COMPACT DISC, MAP, CENTRAL EUROPE, 623 | — | Provisional |
| R2K | P, APP, R, APPEARANCE PACKAGE, OPTIC, 10402 E 0 | — | Provisional |
| R2Q | Wheel 19 X 8.5, J, FRT & 20 X 10.0, J, Rr, Aluminum, Design 5 | — | Reference |
| R2S | Tire All 215/70r16 108/106s BW 6pr Hwy (export) (do Not Use After 2011 ON New/major Progs) | — | Reference |
| R2T | Tire Spare 195r15c 106/104s BW 8pr | — | Reference |
| R2U | Tire Spare 195r15c 106/104s BW 8pr (export) (do Not Use After M.y. 2011) | — | Reference |
| R2V | Tire All 245/40r20-95w BW R/st TL Hw4 | — | Reference |
| R2X | Tire All 235/55r18 100h TL BW Hw3 | — | Reference |
| R2Y | Tire All 235/45r19-95w BW R/st TL Hw4 | — | Reference |
| R30 | TIRES - LT275/65R18C MT - Goodyear Wrangler Territory, Blackwall | 2026 | GM sourced |
| R3A | P, TTF, R, TIRE TREAD FRONT, HIGHWAY this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3B | P, TTF, R, TIRE TREAD FRONT, EXTRA STRENGTH HIGHWAY this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3C | P, TTF, R, TIRE TREAD FRONT, PREMIUM HIGHWAY this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3D | P, TTF, R, TIRE TREAD FRONT, HIGHWAY PREMIUM TRACTION this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3E | P, TTF, R, TIRE TREAD FRONT, HIGHWAY ON/OFF ROAD TRACTION this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3F | P, TTF, R, TIRE TREAD FRONT, OFF ROAD ROLLING this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3G | P, TTF, R, TIRE TREAD FRONT, ON/OFF ROAD MUD & SNOW this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3H | P, TTF, R, TIRE TREAD FRONT, HIGHWAY TRACTION this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3J | P, TTF, R, TIRE TREAD FRONT, HIGHWAY TRACTION BLOCK this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3K | P, TTF, R, TIRE TREAD FRONT, ON/OFF ROAD RIB this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3L | P, TTF, R, TIRE TREAD FRONT, OFF ROAD TRACTION this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R3M | P, TTF, R, TIRE TREAD FRONT, ALL SEASON (ALS) this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| R3N | P, TTF, R, TIRE TREAD FRONT, PREMIUM HIGHWAY IMPROVED STEERING CONTROL this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| R3O | Tires, LT275/65R18C blackwall Goodyear Wrangler Territory MT | 2026 | GM sourced |
| R3P | Wheel 19 X 7, Aluminum, Chrome | — | Reference |
| R3Q | P, TTF, R, TIRE TREAD FRONT, FUEL EFFICIENT | 1992 | GM sourced |
| R3R | P, TTF, R, TIRE TREAD FRONT, HIGHWAY TRACTION-HIGH CENTER OF GRAVITY | 1997 | GM sourced |
| R3S | P, TTF, R, TIRE TREAD FRONT, HIGHWAY RIB-XRV this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| R3T | C, TTF, R, TIRE TREAD FRONT, ON/OFF ROAD TRACTION-DIRECTIONAL this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| R3U | Tire All 235/60r17 SL 102 H BW Hw2 | — | Reference |
| R3V | Tire All 245/45r18-100v BW Hw4 | — | Reference |
| R3W | Tire All 235/50r18-97v BW R/st TL Hw4 | — | Reference |
| R3X | Tire All 235/50r18 SL 97v BW Al3 | — | Reference |
| R3Z | Wheel 20 X 8 FRT & 20 X 9 Rr, J, Aluminum, Design 1 | — | Reference |
| R40 | Wheel 20 X 8 FRT & 20 X 9 Rr, J, Aluminum, Design 2 | — | Reference |
| R41 | Wheel 20 X 8 FRT & 20 X 9 Rr, J, Aluminum, Design 3 | — | Reference |
| R42 | Wheel 20 X 8.0, J, FRT & 20 X 9.0, J, Rr, Aluminum, Design 4 | — | Reference |
| R45 | Wheel 20 X 8.0, J, FRT & 20 X 9.0, J, Rr, Aluminum Design 7 | — | Reference |
| R47 | Wheel 21 X 8.5, J, FRT & 21 X 9.5, J, Rr, Aluminum, Desi GN # 3 | — | Reference |
| R48 | Wheel 21 X 8.5 J, Frt, 21 X 9.5, J, Rr, Aluminum, Design # 4 | — | Reference |
| R49 | Wheel 20 X 8.0, J, FRT & 20 X 9.0, J, Rr, Aluminum, Design 7 | — | Reference |
| R4A | P, TBF, R, TIRE BRAND FRONT, GOODYEAR this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R4B | P, TBF, R, TIRE BRAND FRONT, UNIROYAL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| R4C | Wheels, 22 inch x 9 inch Manoogian Silver painted aluminum this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| R4D | Wheels, 22 inch Split 7-Spoke alloy, Polished finish with High Gloss Black and laser etching this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| R4E | Wheels, 22 inch 9-Spoke alloy with Polished finish | 2026 | GM sourced |
| R4F | Wheels, 22 inch 6-Spoke alloy, Polished finish with Dark Android and Low Gloss Finish | 2026 | GM sourced |
| R4G | P, TBF, R, TIRE BRAND FRONT, FIRESTONE this code has more than one documented meaning — filter by year | 1986 | 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.