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| 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 601–700 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 |
|---|---|---|---|
| CQ2 | P, FIN, R, FLEET INCENTIVE, SIEBE/FOXBORO CO (C/H/N/U/W-TRK CKGMLST), 10529 | — | Provisional |
| CQ3 | P, FIN, R, FLEET INCENTIVE, GENERAL CABLE (N/W-TRK CK), 10705 | — | Provisional |
| CQ4 | P, FIN, R, FLEET INCENTIVE, KROGER COMPANY (N/U/W-TRK GML), 10723 | — | Provisional |
| CQ5 | P, FIN, R, FLEET INCENTIVE, MIDLAND COMPANY (H/W-TRK ST), 10705 | — | Provisional |
| CQ6 | P, FIN, R, FLEET INCENTIVE, MILACRON INC. (U/W), 10705 | — | Provisional |
| CQ7 | P, FIN, R, FLEET INCENTIVE, ROYAL AND SUN ALLIANCE (B/C/N/W-TRK CKGMLST), 11023 | — | Provisional |
| CQ8 | P, FIN, R, FLEET INCENTIVE, LIBERTY MUTUAL LIFE INSURANCE (J/L/N/U/W-TRK ST), 616 | — | Provisional |
| CQ9 | P, FIN, R, FLEET INCENTIVE, TRANSAMERICA FINANCE CORP. (C/D/H/K/W-TRK CKST), 20801 | — | Provisional |
| CQB | P, FIN, R, FLEET INCENTIVE, BRADEN PARTNERS/MED MART/PACIFIC PULMONARY (TRK ML, 21101 | — | Provisional |
| CQC | P, FIN, R, FLEET INCENTIVE, HUGHES ELECTRONICS/DIRECT TV (K/N-TRK CKGML), 21101 | — | Provisional |
| CQD | P, FIN, R, FLEET INCENTIVE, GRACO, INC. (W-TRK CKML), 21106 | — | Provisional |
| CQE | P, FIN, R, FLEET INCENTIVE, MAHER TERMINALS, INC. (J/N/U/W-TRK CKGMLST), 21108 | — | Provisional |
| CQF | P, FIN, R, FLEET INCENTIVE, INA USA CORP. (J/N/U/W-TRK CKGMLST), 21108 | — | Provisional |
| CQM | P, EQUIPMENT, SHEET METAL, RR SIDE, 10316 E, 0 | — | Provisional |
| CR0 | P, LAMP, INTR, ENG COMPT, COURTESY - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CR1 | P, LAMP, INTR, FRT DR, WARNING | 1986 | GM sourced |
| CR2 | P, CTY, R, COUNTRY, SLOVENIA | 1998 | GM sourced |
| CR3 | P, LAMP, INTR, I/P READING | 1987 | GM sourced |
| CR4 | P, CTY, R, COUNTRY, DUBAI | 1993 | GM sourced |
| CR5 | P, CTY, R, COUNTRY, CROATIA | 1993 | GM sourced |
| CR6 | P, CTY, R, COUNTRY, POLAND | 1998 | GM sourced |
| CR7 | P, CTY, R, COUNTRY, HUNGARY | 1998 | GM sourced |
| CR8 | P, CTY, R, COUNTRY, EGYPT | 1998 | GM sourced |
| CR9 | P, CTY, R, COUNTRY, MOROCCO | 1993 | GM sourced |
| CRC | FAMILY CODE, COVER, RR COMPT, 1213 | — | Provisional |
| CRI | P, EQUIPMENT, CREW CAB, TRIM, UPLEVEL this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CRS | Family Code, Console Roof | 1996 | GM dated |
| CRW | P, EQUIPMENT, CREW CAB this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| CS0 | P, CTY, R, COUNTRY, CZECH REPUBLIC | 1998 | GM sourced |
| CS1 | P, CTY, R, COUNTRY, TUNISIA | 1998 | GM sourced |
| CS2 | P, CTY, R, COUNTRY, NIGERIA | 1993 | GM sourced |
| CS3 | P, CTY, R, COUNTRY, TOGO | 1993 | GM sourced |
| CS4 | P, LAMP, INTR, QTR, DUAL READING | 1989 | Provisional |
| CS5 | P, CTY, R, COUNTRY, ANGOLA | 1993 | GM sourced |
| CS6 | P, CTY, R, COUNTRY, ETHIOPIA | 1998 | GM sourced |
| CS7 | 2015 Oem Engine Physical ID Cs7 & Production Number 126452447 this code has more than one documented meaning — filter by year | — | Reference |
| CS8 | P, CTY, R, COUNTRY, ZIMBABWE this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| CS9 | P, CTY, R, COUNTRY, BOTSWANA this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| CSC | Sales Package Competition Sport | — | Reference |
| CSL | Family Code, Console | 1988 | GM dated |
| CSM | P, PLT, R, PLANT CODE, CHARLOTTE, MI, USA this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| CSR | Family Code, Cluster | 1988 | GM dated |
| CT0 | P, CTY, R, COUNTRY, SLOVAKIA | 1998 | GM sourced |
| CT1 | P, CTY, R, COUNTRY, BELGIUM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT2 | P, CTY, R, COUNTRY, AUSTRIA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT3 | P, CTY, R, COUNTRY, GERMANY this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT4 | P, CTY, R, COUNTRY, LUXEMBOURG this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| CT5 | P, CTY, R, COUNTRY, NETHERLANDS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT6 | P, CTY, R, COUNTRY, ITALY this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT7 | P, CTY, R, COUNTRY, DENMARK this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT8 | P, CTY, R, COUNTRY, PORTUGAL this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CT9 | P, CTY, R, COUNTRY, SPAIN this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CTB | Intersection Automatic Emergency Braking this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| CTD | P, EQUIPMENT, CARGO TIE DOWN (MOVABLE), 125 | — | GM sourced |
| CTF | P, SALES PACKAGE, INTERIM CONTROL this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| CTG | P, SALES PACKAGE, INTERIM CONTROL (END YOKE) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CTH | P, SALES PACKAGE, INTERIM CONTROL (CAT ENGINE) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CTT | Hitch Guidance | 2026 | GM sourced |
| CTY | Family Code, Country | 1989 | GM dated |
| CU0 | P, CTY, R, COUNTRY, UKRAINE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU1 | P, CTY, R, COUNTRY, NORWAY this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU2 | P, CTY, R, COUNTRY, FINLAND this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU3 | P, CTY, R, COUNTRY, FRANCE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU4 | P, CTY, R, COUNTRY, SWEDEN this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU5 | P, CTY, R, COUNTRY, SWITZERLAND this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU6 | P, CTY, R, COUNTRY, TAIWAN | 1998 | GM sourced |
| CU7 | P, CTY, R, COUNTRY, KUWAIT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CU8 | P, CTY, R, COUNTRY, SAUDI ARABIA | 1998 | GM sourced |
| CU9 | P, CTY, R, COUNTRY, UNITED KINGDOM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CUA | Equipment Switch, Overdrive Relocate | — | Reference |
| CUP | C, FIRE EXTINGUISHER, 2.75 LB OR EQUIV this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CUR | C, KIT, SAFETY REFLECTOR (SEO), 10330 | — | GM sourced |
| CUT | C, FIRE EXTINGUISHER, 1.75 LB OR EQUIV this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CUU | C, EQUIPMENT, A/C CONDENSER RELOCATE | 1997 | GM sourced |
| CUV | P, EQC, R, EQUIPMENT ADDITIONAL, UNITED KINGDOM | 1998 | GM sourced |
| CUW | P, EQC, R, EQUIPMENT ADDITIONAL, GULF STATES (BAHRAIN, OMAN, QATAT, UAE) | 1998 | Provisional |
| CUX | P, EQC, R, EQUIPMENT ADDITIONAL, ESTONIA | 1998 | GM sourced |
| CV0 | P, CTY, R, COUNTRY, ALBANIA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CV1 | P, CTY, R, COUNTRY, ICELAND this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CV2 | P, CTY, R, COUNTRY, BRAZIL | 1998 | GM sourced |
| CV3 | P, CTY, R, COUNTRY, MEXICO | 1998 | GM sourced |
| CV4 | P, CTY, R, COUNTRY, ISRAEL | 1998 | GM sourced |
| CV5 | P, CTY, R, COUNTRY, JAPAN | 1998 | GM sourced |
| CV6 | P, CTY, R, COUNTRY, CHILE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CV7 | P, CTY, R, COUNTRY, ENGLAND this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| CV8 | P, CTY, R, COUNTRY, IRAQ this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| CV9 | P, CTY, R, COUNTRY, TURKEY | 1998 | GM sourced |
| CVH | FAMILY CODE, COVERING HEADLINER, 10221 | — | Provisional |
| CW0 | P, CTY, R, COUNTRY, ARMENIA | 1999 | GM sourced |
| CW1 | P, CTY, R, COUNTRY, KOREA | 1991 | GM sourced |
| CW2 | P, CTY, R, COUNTRY, GULF AREAS (BAHRAIN, KUWAIT, OMAN, QATAR, SAUDI ARABIA, UAE), 1206 | — | GM sourced |
| CW3 | P, CTY, R, COUNTRY, ASIA / PACIFIC (BANGLADESH, FIJI, LAOS) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| CW4 | P, CTY, R, COUNTRY, CARIBBEAN (ANTIGUA,ANTILLE,BAHAMA,BARBADOS,BERMUDACAYMAN,DOMINICAN,HAITI,JAMAICA,NASSAU,S.M.,TRINID 9 9 0 2 1 6 P, 3 | — | GM sourced |
| CW5 | P, CTY, R, COUNTRY, VENEZUELA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CW6 | P, CTY, R, COUNTRY, GUAM this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| CW7 | P, CTY, R, COUNTRY, PUERTO RICO/US VIRGIN ISLANDS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| CW8 | P, CTY, R, COUNTRY, MEXICO (BORDER DEALERS) this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| CW9 | P, CTY, R, COUNTRY, MISCELLANEOUS, 10611 | — | GM sourced |
| CWA | Rear Camera Washer | 2026 | GM sourced |
| CWB | Sales Package Chrome Exterior | — | Reference |
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.