← 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 401–500 of 746 codes beginning with C. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| CEA | Rear Chassis Equipment | — | Reference |
| CEB | Control Interior Temperature, Celsius | — | Reference |
| CEC | Wiper System Windshield, Intermittent, Moisture Sensitive | — | Reference |
| CEF | Front Chassis Equipment | — | Reference |
| CEI | Certification,emission,restricted Region, Vehicles Over 14,000lbs GVW | — | Reference |
| CEJ | Certification Emission, Federal For Vehicles Over 14,000 Lbs Gvwr | — | Reference |
| CEK | Emission Override California System For Vehicles Over 14,000 Lbs Gvwr | — | Reference |
| CEM | Emission Override Federal System For Vehicles Over 14,000 Lbs GVW | — | Reference |
| CEN | Appearance Package Extr, Decal Package, Deep Black | — | Reference |
| CEQ | Appearance Package Extr, Decal Package, Anthracite Carbon | — | Reference |
| CER | Family Code, Certification | 1992 | GM dated |
| CEW | Appearance Package Extr, Decal Package, Tech Grey Matt | — | Reference |
| CF0 | P, EQC, R, EQUIPMENT ADDITIONAL, LAOS | 1998 | Provisional |
| CF1 | P, ROOF, RR, SUN, ELEC | 1993 | Provisional |
| CF2 | P, EQC, R, EQUIPMENT ADDITIONAL, LATVIA | 1998 | GM sourced |
| CF3 | P, RDC, R, ROOF, SUN, REMOVABLE, TRANSPARENT | 1984 | GM sourced |
| CF4 | P, RDC, R, ROOF, SUN, GLASS, SLIDING, MANUAL this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| CF5 | Sunroof, power this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| CF6 | P, EQC, R, EQUIPMENT ADDITIONAL, LITHUANIA | 1998 | GM sourced |
| CF7 | P, RDC, R, ROOF, SUN, REMOVABLE, NON-TRANSPARENT | 1984 | GM sourced |
| CF8 | P, TPS, R, ROOF COVERING, SIMULATED CONVERTIBLE this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| CF9 | P, EQC, R, EQUIPMENT ADDITIONAL, MOLDAVIA | 1998 | Provisional |
| CFA | Roof Hatch, Removable, Carbon Fiber | — | Reference |
| CFB | Roof Non-removable | — | Reference |
| CFC | Roof Non-removable, Carbon Fiber | — | Reference |
| CFN | Roof Sun, Glass, Sliding, Elec -- Not Installed | — | Reference |
| CFV | Performance Package Carbon Fiber, Visible | — | Reference |
| CFX | Plaque Intr, Dedication, Museum Logo | — | Reference |
| CFY | Plaque Intr, Dedication, Special Edition | — | Reference |
| CFZ | Performance Package Carbon Fiber | — | Reference |
| CG0 | P, FIN, R, FLEET INCENTIVE, THE LIMITED, INC (B/U/W-TRK ST7), 804 | — | Provisional |
| CG1 | 2014 Oem Engine Physical ID Cg1 & Production Number 12643339 | — | Reference |
| CG2 | P, FIN, R, FLEET INCENTIVE, ASEA BROWN BOVERI (ABB, INC) (H/U/W TRK-CKGMLST), 10807 | — | Provisional |
| CG3 | P, FIN, R, FLEET INCENTIVE, BORDEN, INC (H/J/K/N/U/W-TRK CKGMLST) | 1999 | GM sourced |
| CG4 | P, FIN, R, FLEET INCENTIVE, VISITING ENGINEERS OF BOEING (U/W), 10705 | — | Provisional |
| CG5 | P, FIN, R, FLEET INCENTIVE, BUDGET TRUCK (CONSUMER RENT DIV), (-TRK CKGMLPST), 11008 | — | Provisional |
| CG6 | P, FIN, R, FLEET INCENTIVE, USX/MARATHON OIL-1 (C/H/N/U/W-TRK CKGMLPST) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| CG7 | 2014 Oem Engine Physical ID Cg7 & Production Number 12643345 | — | Reference |
| CG8 | 2014 Oem Engine Physical ID Cg8 & Production Number 12643346 | — | Reference |
| CG9 | 2014 Oem Engine Physical ID Cg9 & Production Number 12643347 | — | Reference |
| CGA | P, EQC, R, EQUIPMENT ADDITIONAL, MOROCCO | 1998 | Provisional |
| CGB | P, EQC, R, EQUIPMENT ADDITIONAL, MYANMAR | 1998 | Provisional |
| CGC | P, EQC, R, EQUIPMENT ADDITIONAL, OMAN | 1998 | Provisional |
| CGD | P, EQC, R, EQUIPMENT ADDITIONAL, PAPAU NEW GUINEA | 1998 | Provisional |
| CGE | P, EQC, R, EQUIPMENT ADDITIONAL, QATAR | 1998 | Provisional |
| CGF | P, EQC, R, EQUIPMENT ADDITIONAL, SIBERIA | 1998 | Provisional |
| CGG | P, EQC, R, EQUIPMENT ADDITIONAL, ST MAARTEN | 1998 | Provisional |
| CGH | P, EQC, R, EQUIPMENT ADDITIONAL, TRINIDAD | 1998 | Provisional |
| CGI | P, EQC, R, EQUIPMENT ADDITIONAL, TURMENISTAN | 1998 | Provisional |
| CGK | Equipment Additional Libya | — | Reference |
| CGN | Chevytec Spray-on Bedliner | 2026 | GM sourced |
| CGS | Model Conversion Chevrolet, LS Awd | — | Reference |
| CGT | Model Conversion Chevrolet, LT Awd | — | Reference |
| CGU | Model Conversion Chevrolet, Ltz Awd | — | Reference |
| CGV | Model Conversion Buick, Cx2 | — | Reference |
| CGW | Model Conversion Buick, Cxl2 | — | Reference |
| CGX | Decal Tattoo, Pink | — | Reference |
| CGY | P, COVER, CARGO, FABRIC, 10503 | — | GM sourced |
| CGZ | Decal Tattoo, White | — | Reference |
| CH0 | P, FIN, R, FLEET INCENTIVE, ASPLUNDH TREE EXPERT CO (C/H/N/W TRK-CKGMLST) | 1999 | GM sourced |
| CH1 | P, FIN, R, FLEET INCENTIVE, ISP - INTERNATIONAL SPECIALTY PRODUCTS, (D/H/S/U/W -TRK CKST), 20603 | — | GM sourced |
| CH2 | P, FIN, R, FLEET INCENTIVE, CINCINNATI INCORPORATED (N/U/W-TRK GML), 10723 | — | GM sourced |
| CH3 | P, FIN, R, FLEET INCENTIVE, QWEST (N/W-TRK CKGMLST), 10220 | — | Provisional |
| CH4 | P, FIN, R, FLEET INCENTIVE, REORGANIZED CHURCH OF JESUS CHRIST OF LATTER DAY SAINTS (W), 10221 | — | Provisional |
| CH5 | P, FIN, R, FLEET INCENTIVE, KOCH SUPPLY SERVICES (W-TRK CKGMLST) | 1999 | GM sourced |
| CH6 | P, FIN, R, FLEET INCENTIVE, SWIFT TRANSPORATION COMPANY, INC (H/N/W-TRK CKGML), 20409 | — | Provisional |
| CH7 | P, FIN, R, FLEET INCENTIVE, UNILEVER/LIPTON (C/H/J/N/U/W-TRK CKGMLST) | 1999 | GM sourced |
| CH8 | P, FIN, R, FLEET INCENTIVE, NATIONAL CASH REGISTER (U/W-TRK GML) | 1999 | GM sourced |
| CH9 | 2012-2014 Oem Engine Physical ID Ch9 & Production Number 94672707 this code has more than one documented meaning — filter by year | — | Reference |
| CHB | 2012-2014 Oem Engine Physical ID Chb & Production Number 94672717 this code has more than one documented meaning — filter by year | — | Reference |
| CHC | 2012 Oem Engine Physical ID Chc & Production Number 94672708 | — | Reference |
| CHD | 2012-2014 Oem Engine Physical ID Chd & Production Number 94672709 this code has more than one documented meaning — filter by year | — | Reference |
| CHF | 2012-2014 Oem Engine Physical ID Chf & Production Number 94672710 | — | Reference |
| CHH | 2012-2014 Oem Engine Physical ID Chh & Production Number 94672712 this code has more than one documented meaning — filter by year | — | Reference |
| CHJ | 2012-2014 Oem Engine Physical ID Chj & Production Number 94672718 this code has more than one documented meaning — filter by year | — | Reference |
| CHK | 2012-2014 Oem Engine Physical ID Chk & Production Number 94672719 this code has more than one documented meaning — filter by year | — | Reference |
| CHL | 2012-2014 Oem Engine Physical ID Chl & Production Number 94672720 this code has more than one documented meaning — filter by year | — | Reference |
| CHM | 2012-2014 Oem Engine Physical ID Chm & Production Number 94672713 this code has more than one documented meaning — filter by year | — | Reference |
| CHN | 2012-2014 Oem Engine Physical ID Chn & Production Number 94672721 this code has more than one documented meaning — filter by year | — | Reference |
| CHP | Family Code, Chassis Package this code has more than one documented meaning — filter by year | 1991 | GM dated |
| CHR | 2012-2014 Oem Engine Physical ID Chr & Production Number 94672723 this code has more than one documented meaning — filter by year | — | Reference |
| CHS | 2012 Oem Engine Physical ID Chs & Production Number 94672724 this code has more than one documented meaning — filter by year | — | Reference |
| CHT | 2012-2014 Oem Engine Physical ID Cht & Production Number 94672725 this code has more than one documented meaning — filter by year | — | Reference |
| CHU | 2012-2014 Oem Engine Physical ID Chu & Production Number 94672714 this code has more than one documented meaning — filter by year | — | Reference |
| CHW | Wiper System Windshield, Heated Washer Fluid | — | Reference |
| CHY | 2012-2013 Oem Engine Physical ID Chy & Production Number 94672726 | — | Reference |
| CI0 | P, FIN, R, FLEET INCENTIVE, PACKAGING CORP. OF AMERICA (U/W), 10516 | — | Provisional |
| CI1 | P, FIN, R, FLEET INCENTIVE, TENNESSEE FARMERS INSURANCE (H/N/U/W-TRK CKMST) | 1998 | GM sourced |
| CI2 | P, FIN, R, FLEET INCENTIVE, IKO MANUFACTURING (U/W), 11009 | — | Provisional |
| CI3 | P, FIN, R, FLEET INCENTIVE, NAVCO, INC. (TRK GML), 20520 | — | Provisional |
| CI4 | P, FIN, R, FLEET INCENTIVE, SC JOHNSON & SON INC. (H/N/U/W-TRK CKGST), 10910 | — | Provisional |
| CI5 | P, FIN, R, FLEET INCENTIVE, VENTURA FOODS (W), 10803 | — | Provisional |
| CI6 | P, FIN, R, FLEET INCENTIVE, SMURFIT STONE CONTAINER CORP (B/H/U/W-TRK CKGMLST) | 1998 | GM sourced |
| CI7 | P, FIN, R, FLEET INCENTIVE, 2003 AGILENT TECHNOLOGIES (U/W), 11002 | — | Provisional |
| CI8 | P, FIN, R, FLEET INCENTIVE, HANSON BUILDING MATERIALS AMERICA (H/K/W-TRK CKST), 10905 | — | Provisional |
| CI9 | P, FIN, R, FLEET INCENTIVE, FOSTER FARMS (C/H/K/N/W-TRK CKGMLST), 20801 | — | Provisional |
| CIR | P, FIN, R, FLEET INCENTIVE, THE DISPATCH PRINTING COMPANY (J/N/U-TRK CKGMLST), 21101 | — | Provisional |
| CJ1 | P, HTR, M, HVAC SYSTEM, AIR CONDITIONER FRT, AUTO, ELECTRONIC CONTROLS, INCREASED CAPACITY, 20916 E, 0 | — | Provisional |
| CJ2 | Air conditioning, tri-zone automatic climate control | 2026 | GM sourced |
| CJ3 | P, HTR, M, HVAC SYSTEM, AIR CONDITIONER FRT, MAN TEMP CONT, AUX TEMP CONT | 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.