← 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 301–400 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 |
|---|---|---|---|
| RCP | Wheel 20 X 8.5, Alum, Painted | — | Reference |
| RCQ | Wheel 17 X 7.0, J, Aluminum, Design 15 | — | Reference |
| RCR | Wheel 17 X 7.0, J, Aluminum, Design 16 | — | Reference |
| RCS | Wheels, 18 inch machined aluminum wheel with High Gloss black accents | 2026 | GM sourced |
| RCU | Wheel 18 X 8.0, J, Aluminum, Design 17 | — | Reference |
| RCV | Wheels, 18 inch x 8.5 inch Bright Silver painted aluminum | 2026 | GM sourced |
| RCW | Wheels, 18 inch x 8.5 inch aluminum machined face with Black Painted spokes | 2026 | GM sourced |
| RCX | C, WHF, M WHEEL FRT, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG, (ACCURIDE 25524) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RCY | C, WHR, M WHEEL RR, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG, (ACCURIDE 25524) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| RCZ | Wheel 20 X 8.5 Alum, Chromed, 5 Spokes, (chev) | — | Reference |
| RD0 | P, ASHTRAY, EUROPEAN RADIUS INSPECTION REQUIREMENT | 1998 | GM sourced |
| RD1 | Wheels, 18 inch x 8.5 inch | 2026 | GM sourced |
| RD2 | Wheels, 20 inch x 9 inch | 2026 | GM sourced |
| RD3 | Wheels, 20 inch x 9 inch | 2026 | GM sourced |
| RD4 | Wheels - 20 inch x 9 inch painted aluminum | 2022 | GM sourced |
| RD5 | Wheels, 20 inch x 9 inch High gloss Black painted aluminum | 2026 | GM sourced |
| RD6 | Wheels, 17 inch x 8 inch painted steel | 2026 | GM sourced |
| RD7 | Wheel 17 X 8.0, J, Steel, Design 3 | — | Reference |
| RD9 | Wheel 18 X 7.5, J, Aluminum, Design 11 | — | Reference |
| RDA | Wheel 18 X 8.0, J, Aluminum, Design 16 | — | Reference |
| RDB | Wheel 18 X 8.0, J, Aluminum, Design 18 | — | Reference |
| RDC | Family Code, Roof this code has more than one documented meaning — filter by year | 1990 | GM dated |
| RDE | P, RAIL, PUBX BED, CHROME, 20606 | — | Provisional |
| RDF | P, RAIL, PUBX BED, NATURAL, 20916 | — | Provisional |
| RDG | P, RAIL, PUBX BED, GRAY, 20904 | — | Provisional |
| RDH | Tire All 225/55r17 S 97h BW Al2 | — | Reference |
| RDI | Keyless Entry Keypad (LPO dealer-installed accessory) | 2026 | GM sourced |
| RDK | Wheel 18 X 7.0, J, Aluminum, Design 4 | — | Reference |
| RDL | Wheel 17 X 7.0, J, Aluminum, Design 18 | — | Reference |
| RDO | Family Code, Radio | 1999 | GM dated |
| RDP | Wheel 20 X 8.5, Alum, Polished (G M C) | — | Reference |
| RDQ | Tire All 235/60r17 102h TL BW Hw3 | — | Reference |
| RDR | C, FLP, R FLEET SALES, RYDER | 1993 | GM sourced |
| RDS | Family Code, Sales Radio | 1996 | GM dated |
| RDT | Tire All 225/45r19 SL 92h BW Hw4 | — | Reference |
| RDU | Tire All 235/40r19 XL 96w BW Hwy | — | Reference |
| RDZ | Tire All 215/60r16 SL 95v BW Hw3 Var 1 | — | Reference |
| RE0 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, BASE COUPE, 20218 E 3, 3, A | — | GM sourced |
| RE1 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, BASE SEDAN, 20218 E 3, 3, A | — | GM sourced |
| RE2 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, LS COUPE, 20218 E 3, 3, A | — | GM sourced |
| RE3 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, LS SEDAN, 20218 E 3, 3, A | — | GM sourced |
| RE4 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, GT COUPE, 21008 E 3, 3, A | — | GM sourced |
| RE5 | P, MSM, R MODEL CONVERSION, CANADIAN PONTIAC, GT SEDAN, 21008 E 3, 3, A | — | GM sourced |
| RE6 | Model Conversion Luxury Edition | — | Reference |
| RE7 | Tire All 215/50r17 SL 91v BW Hw4 Var 1 | — | Reference |
| RE8 | Ornamentation Intr, Upgrade | — | Reference |
| RE9 | P, SGR, R MERCHANDISED PKG, SATURN LEVEL 1 SEDAN MANUAL, 20221 M 3 | — | GM sourced |
| REA | Wheel 17 X 7.0, J, Aluminum, Design 19 | — | Reference |
| REB | Wheel 18 X 8.0, J, Aluminum, Design 19 | — | Reference |
| RED | Wheel 18 X 8.0, J, Aluminum, Design 20 | — | Reference |
| REF | Family Code, Reinforcement | 1988 | GM dated |
| REG | Wheels, 18 inch Black painted aluminum | 2019 | Reference |
| REH | Wheel 19 X 8.5, J, Aluminum, Design 19 | — | Reference |
| REJ | Wheel 19 X 8.5, J, Aluminum, Design 20 | — | Reference |
| REK | Wheel 19 X 8.5, J, Aluminum, Design 21 | — | Reference |
| REL | P, WHF, M WHEEL FRT, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG, (BUDD 64900-1) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| REM | P, WHR, M WHEEL RR, 20 X 8.0, 10 HOLE, 11.25 BC BS 5 DEG, (BUDD 64900-1) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| REN | Wheel 18 X 7.5, J, Aluminum, Design 12 | — | Reference |
| REP | Wheel 18 X 8.0, J, Aluminum, Design 21 | — | Reference |
| RES | Family Code, Restraint System | 1988 | GM dated |
| RET | Accessory Child Seat Adapter | — | Reference |
| REU | Wheel 19 X 8.5, J, FRT & 19 X 9.0, J, Rr, Aluminum, Design 1 | — | Reference |
| REY | Wheel 18 X 7.0, J, Aluminum, Design 6 | — | Reference |
| REZ | Tire All 215/50r17 SL 91v BW Hw4 | — | Reference |
| RF1 | Wheels, 24 inch x 9.5 inch machined and painted Carbon Flash Metallic | 2026 | GM sourced |
| RF2 | Wheels, 24 inch x 9.5 inch bright machined and painted High Gloss Black | 2026 | GM sourced |
| RF3 | Wheels, 24 inch x 9.5 inch selective machined and painted Pearl Nickel | 2026 | GM sourced |
| RF4 | Wheels, 24 inch x 9.5 inch selective machined and painted After Midnight Metallic | 2026 | GM sourced |
| RF5 | Wheels, 24 inch 7-Spoke alloy with Pearl Nickel and High Gloss Black insert | 2026 | GM sourced |
| RF6 | P, SGR, R MERCHANDISED PKG, SATURN LEVEL 2 COUPE MANUAL, 20221 M 3 | — | GM sourced |
| RF7 | Wheels, 24 inch 10-Spoke alloy, Polished finish with High Gloss Black and laser etching | 2026 | GM sourced |
| RF8 | P, SGR, R MERCHANDISED PKG, SATURN LEVEL 3 COUPE MANUAL, 20221 M 3 | — | GM sourced |
| RF9 | Wheels, 18 inch x 9 inch Carbon Flash Metallic with AEV logo | 2026 | GM sourced |
| RFE | Black Badging Package (LPO dealer-installed accessory) | 2026 | GM sourced |
| RFH | ONSTAR ONE FLEET - 24 MONTHS OF SERVICE | 2026 | GM sourced |
| RFM | Sales -delete RR Vinyl Floor Covering | — | Reference |
| RFN | Performance Upgrade Package (LPO dealer-installed accessory) | 2026 | GM sourced |
| RFO | Hit The Road Package (LPO dealer-installed accessory) this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RFP | Denali Reserve Super Cruise Package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RFQ | Wheel,end Equipment,15,000# Cap Rear Axle | — | Reference |
| RFR | Wheel,end Equipment,17,000# Cap Rear Axle | — | Reference |
| RFS | ONSTAR IN-VEHICLE COACHING - 2 Years of Service | 2024 | GM sourced |
| RFT | ONSTAR IN-VEHICLE COACHING - 3 Years of Service | 2024 | GM sourced |
| RFU | ONSTAR IN-VEHICLE COACHING - 4 Years of Service | 2024 | GM sourced |
| RFX | X31 Off-Road and Protection Package | 2026 | GM sourced |
| RFY | ONSTAR IN-VEHICLE COACHING - 5 Years of Service | 2024 | GM sourced |
| RFZ | Get Active Package (LPO dealer-installed accessory) | 2026 | GM sourced |
| RG1 | Shielded rear brake caliper | 2026 | GM sourced |
| RG2 | Merchandised Pkg Saturn Level 2 Cpe Automatic | — | Reference |
| RG3 | Merchandised Pkg Saturn Level 3 Cpe Automatic | — | Reference |
| RG4 | Fleet Delete Base Content Package | 2026 | GM sourced |
| RG7 | Premium Trailering Package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RG8 | Premium Liner Protection Package (LPO dealer-installed accessory) this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RGA | Wheel 18 X 8, Alum, Chrome Clad, 5 Spokes, (gmc) Flanged | — | Reference |
| RGC | Floor Liner Package (LPO dealer-installed accessory) this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RGD | Elevation Premium Package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RGE | Denali Appearance Package (LPO dealer-installed accessory) this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RGF | Elevation Black Package (LPO dealer-installed accessory) this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| RGH | Interior Protection Package (LPO dealer-installed accessory) | 2026 | GM sourced |
| RGJ | Elevation Select Package this code has more than one documented meaning — filter by year | 2026 | 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.