← 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 975 codes beginning with Q. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| Q02 | Wheel 18 X 8, Aluminum, 5 Twin Spokes | — | Reference |
| Q04 | Wheel 17 X 7, Aluminum, Design 31 | — | Reference |
| Q05 | Wheel 17 X 7, Aluminum, Design 32 | — | Reference |
| Q08 | Wheel 17 X 7, Aluminum, Design 44 | — | Reference |
| Q0B | Tire All P215/60r16-94v BW R/st TL Al3 | — | Reference |
| Q0D | Tire All P215/50r17-90h BW R/st TL Al3 | — | Reference |
| Q0E | Tire All P225/50r17-93v BW R/st TL Al3 | — | Reference |
| Q0F | Tire All P235/45r18-94v BW R/st TL Al3 | — | Reference |
| Q0G | Tire All 205/65r15-94v BW R/st TL Hw3 | — | Reference |
| Q0H | Tire All 205/60r16-92v BW R/st TL Hw3 | — | Reference |
| Q0I | Tire All 215/50r17-91v BW R/st TL Hw3 | — | Reference |
| Q0J | Tire All 225/50r17-94v BW R/st TL Hw3 | — | Reference |
| Q0L | Tire All P205/60r16-91v BW R/st TL Al3 | — | Reference |
| Q0M | Tire All 245/45zr19 98y BW Hwy | — | Reference |
| Q10 | P, WHL, M WHEEL, 18 X 9.5 FRT & 19 X 12 RR, 1204 E, 1 | — | GM sourced |
| Q11 | P, TIR, M TIRE ALL, P235/50R17 FRT & P255/45R17 RR, 20424 | — | GM sourced |
| Q12 | P, TIR, M TIRE ALL, P235/50R18 FRT & P255/45R18 RR, 20424 | — | GM sourced |
| Q13 | P, WHL, M WHEEL, 17X7.5 FRT & 17X8.0 RR (POLISHED), 20424 | — | GM sourced |
| Q14 | P, WHL, M WHEEL, 17X7.5 FRT & 17X8.0 RR (PAINTED), 20424 | — | GM sourced |
| Q15 | P, TIR, M TIRE ALL, P235/65R17 FRT & P255/60R17 RR, 20429 | — | GM sourced |
| Q16 | P, TIR, M TIRE ALL, P235/60R18 FRT & P255/55R18 RR, 20429 | — | GM sourced |
| Q17 | P, TIR, M TIRE ALL, P245/50R17-98W FRT & P225/55R17-95W RR, 20610 | — | GM sourced |
| Q18 | P, WHL, M WHEEL, 17X8.0 FRT & 17X6.5 RR (POLISHED), 20610 | — | Provisional |
| Q19 | Tire All P255/45r18 FRT & P275/40r19 RR Emt | — | Reference |
| Q1A | P, FIN, R FLEET INCENTIVE, CARPENTER DISTRICT COUNCIL OF KANSAS CITY, (K-TRK CK), 20814 | — | Provisional |
| Q1B | P, FIN, R FLEET INCENTIVE, AMERICAN RED CROSS (C/N/U/W-TRK CKGML), 20801 | — | GM sourced |
| Q1C | P, FIN, R FLEET INCENTIVE, ENPRO INDUSTRIES (U/W-TRK CKST), 20814 | — | GM sourced |
| Q1D | Wheel 19 X 8.0, J, Aluminum, Design 10 | — | Reference |
| Q1E | P, FLEET PROGRAM, ACTIVITY PKG A, STRETCH THE LEAD | 1998 | GM sourced |
| Q1F | P, FLEET PROGRAM, ACTIVITY PKG B, STRETCH THE LEAD | 1991 | GM sourced |
| Q1G | Tire All 185/75r14 SL 89h BW Hw1 | — | Reference |
| Q1H | Tire All P195/65r15 SL 89h BW Al2 | — | Reference |
| Q1V | Wheel 16 X 7.5 Aluminum, Chrome, Painted | — | Reference |
| Q1W | Tire All 195/65r15 SL 91h BW Hw2 | — | Reference |
| Q1X | Tire All 205/55r16 SL 91h BW Hw3 | — | Reference |
| Q1Z | P, BUILDOUT, ORDER PROCESSING | 1990 | GM sourced |
| Q20 | Wheel 18x8.5 FRT & 19x9.5 RR | — | Reference |
| Q21 | Wheels, 18 inch Polished forged aluminum this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| Q22 | Tire All P255/45r18 FRT & P225/50r18 RR | — | Reference |
| Q23 | Tire All P235/45r19 FRT & P245/45r19 RR | — | Reference |
| Q24 | Tire All P235/45r19 FRT & P255/40r19 RR | — | Reference |
| Q25 | Tire All P245/55r18 FRT & P275/45r19 RR | — | Reference |
| Q26 | Wheel 18x8.0 FRT & 19x9.5 RR Alum | — | Reference |
| Q28 | Wheel 18.0 X 8.0 Aluminum, Painted, Unflanged | — | Reference |
| Q29 | Wheel 17.0 X 8.0 FRT & 17.0 X 8.5 RR Aluminum, Polished, Flanged | — | Reference |
| Q2A | P, FIN, R FLEET INCENTIVE, JONES BROS., INC. (B-TRK CKST), 20613 | — | Provisional |
| Q2B | Tire All P245/45r19 SL 98v BW Al3 | — | Reference |
| Q2C | P, FIN, R FLEET INCENTIVE, WESTERN ALLIED, INC. (H-TRK CKGML), 20801 | — | Provisional |
| Q2D | P, FIN, R FLEET INCENTIVE, T-MOBIL (W-TRK CKST), 20613 | — | Provisional |
| Q2E | P, FIN, R FLEET INCENTIVE, ADVANCED DRAINAGE SYSTEMS (C/H/K/W-TRK CKST), 20812 | — | Provisional |
| Q2F | P, FIN, R FLEET INCENTIVE, TRM CORPORATION (TRK CKGML), 20801 | — | Provisional |
| Q2G | P, FIN, R FLEET INCENTIVE, ADVANTA USA INC, DBA GARST SEED CO (H/U/W-TRK CKGMLST), 20617 | — | Provisional |
| Q2H | P, FIN, R FLEET INCENTIVE, SECURITY SIGNAL DEVICES (J/N/W-TRK CKGMLST), 20617 | — | Provisional |
| Q2I | P, FIN, R FLEET INCENTIVE, MICHIGAN GREEN INDUSTRY ASSOCIATION (TRK CK), 20621 | — | Provisional |
| Q2J | P, FIN, R FLEET INCENTIVE, SOURCE REFRIGERATION & HVAC, INC. (W-TRK CKG), 20621 | — | Provisional |
| Q2K | P, FIN, R FLEET INCENTIVE, DISASTER KLEENUP INTERNATIONAL, INC. (TRK CKG), 20624 | — | Provisional |
| Q2L | P, FIN, R FLEET INCENTIVE, BEAR PAW ENERGY (TRK CK), 20625 | — | Provisional |
| Q2M | P, FIN, R FLEET INCENTIVE, AMERICAN FIDELITY CORPORATION (C/H/W), 20625 | — | Provisional |
| Q2N | P, FIN, R FLEET INCENTIVE, OCCIDENTAL CHEMICAL CORPORATION (H/N/W-TRK CK), 20801 | — | Provisional |
| Q2P | P, FIN, R FLEET INCENTIVE, KAISER PERMANENTE (J/N/U-TRK CKGMLST), 20626 | — | Provisional |
| Q2Q | P, FIN, R FLEET INCENTIVE, INTERNATIONAL GAME TECHNOLOGY (TRK CKGML), 21030 | — | Provisional |
| Q2R | P, FIN, R FLEET INCENTIVE, PRODUCTIVITY, INC. (N/W-TRK G), 20627 | — | Provisional |
| Q2S | P, FIN, R FLEET INCENTIVE, JOHNSON DIVERSEY (B/H/N/U/W-TRK CKGMLST), 21030 | — | Provisional |
| Q2T | P, FIN, R FLEET INCENTIVE, STIMSON LUMBER (TRK CK), 20701 | — | Provisional |
| Q2U | P, FIN, R FLEET INCENTIVE, MARIGOLD FOODS, LLC (H/N/U/W), 20701 | — | Provisional |
| Q2V | P, FIN, R FLEET INCENTIVE, CHART INDUSTRIES (K/N/W-TRK CKG), 20701 | — | Provisional |
| Q2W | P, FIN, R FLEET INCENTIVE, BEVERAGE MANAGEMENT (J-TRK CKGMLST), 20702 | — | Provisional |
| Q2X | P, FIN, R FLEET INCENTIVE, GREAT NORTHERN CORPORATION (H/U/W), 20702 | — | Provisional |
| Q2Y | P, FIN, R FLEET INCENTIVE, ENVIRONMENTAL CHEMICAL CORPORATION (H/U/W, -TRK CKST), 20820 | — | Provisional |
| Q30 | Wheel 18.0 X 8.0 FRT & 18.0 X 9.0 RR Aluminum, Polished, Unflanged | — | Reference |
| Q31 | P, WHL, M WHEEL, 16 X 6, ALUMINUM, 13 SPOKES, 20829 E, 0 | — | Provisional |
| Q32 | Wheel 19.0 X 9.0 FRT & 19.0 X 9.5 RR Aluminum, Painted, Unflanged | — | Reference |
| Q34 | P, WHS, R WHEEL SPARE, 19.5 X 6 this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| Q35 | P, WHL, M WHEEL, 17 X 6.5, ALUMINUM, 5 SPOKES, 20829 E, 0 | — | GM sourced |
| Q39 | P, WHF, M WHEEL FRT, 20 X 8.5, RIM 5 DEGREE this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| Q3A | P, FIN, R FLEET INCENTIVE, AMERICAN EXCELSIOR (W-TRK CKST), 20703 | — | Provisional |
| Q3B | P, FIN, R FLEET INCENTIVE, SOURCE ONE/ADVANTAGE SALES & MARKETING (J/N/S/U/W-TRK JST), 20708 | — | GM sourced |
| Q3C | P, FIN, R FLEET INCENTIVE, INNOVEX, INC. (W), 20709 | — | Provisional |
| Q3D | P, FIN, R FLEET INCENTIVE, SIX FLAGS, INC. (W-TRK CK), 20709 | — | Provisional |
| Q3E | P, FIN, R FLEET INCENTIVE, THRIFTY CAR RENTAL - HOUSTON, TX (N/W-TRK CK), 20709 | — | Provisional |
| Q3F | P, FIN, R FLEET INCENTIVE, DLZ CORPORATION (H/W-TRK CKGST), 20709 | — | Provisional |
| Q3G | P, FIN, R FLEET INCENTIVE, COMBINED ONSTRUCTION GROUP, LTD. (W-TRK CKGST), 20709 | — | Provisional |
| Q3H | P, FIN, R FLEET INCENTIVE, MDU RESOURCE GROUP (J/N/U/W-TRK CKGMLST), 20712 | — | Provisional |
| Q3I | P, FIN, R FLEET INCENTIVE, MAIO DISTRIBUTING, LLC. (TRK CKGST), 20712 | — | Provisional |
| Q3J | P, FIN, R FLEET INCENTIVE, COINSTAR (N-TRK G), 20712 | — | Provisional |
| Q3K | P, FIN, R FLEET INCENTIVE, MAIO DISTRIBUTING LLC (TRK CKGST), 20715 | — | Provisional |
| Q3L | P, FIN, R FLEET INCENTIVE, BLACK BON CORP. (TRK GMLST), 20716 | — | Provisional |
| Q3M | P, FIN, R FLEET INCENTIVE, RAILWORKS CORP (N/W-TRK CKGMLST), 20716 | — | Provisional |
| Q3N | P, FIN, R FLEET INCENTIVE, ANDREWS DISTRIBUTING COMPANY, INC. (W-TRK CKGST), 20717 | — | Provisional |
| Q3P | P, FIN, R FLEET INCENTIVE, HOLCIM (US), INC. (H/U/W-TRK CKGST), 20719 | — | GM sourced |
| Q3Q | P, FIN, R FLEET INCENTIVE, COLLEX COLLISION EXPERTS (J-TRK CKG), 20719 | — | Provisional |
| Q3R | P, FIN, R FLEET INCENTIVE, CALPINE CONSTRUCTION MANAGEMENT (U/W-TRK CKST), 20719 | — | Provisional |
| Q3S | P, FIN, R FLEET INCENTIVE, BUFFETS, INC. (B/H/U/W-TRK GST), 20719 | — | Provisional |
| Q3T | P, FIN, R, FLEET INCENTIVE, COUGAR INVESTMENTS OF SPOKANE (C/G/H/J/N/S/U/W- TRK CKGJMLST), 20912 | — | Provisional |
| Q3U | P, FIN, R, FLEET INCENTIVE, PECHINEY PLASTIC PACKAGING (C/D/H/K/V/W-, (TRK CKMLST), 20801 | — | Provisional |
| Q3V | P, FIN, R, FLEET INCENTIVE, CIT (C/G/H/S/W-TRK CKST), 20730 | — | Provisional |
| Q3W | P, FIN, R, FLEET INCENTIVE, DEAN SPECIALTY FOODS (U/W-TRK CKST), 21023 | — | Provisional |
| Q3X | P, FIN, R, FLEET INCENTIVE, AT SYSTEMS,INC. (C/H/W-TRK CKGML), 20912 | — | Provisional |
| Q3Y | P, FIN, R, FLEET INCENTIVE, ALASKA TRANSPORTATION CO. LLC (J/N/U/W-TRK CKG), 20731 | — | GM sourced |
| Q3Z | P, FIN, R, FLEET INCENTIVE, ALEMAN AUTO RENTAL (J-TRK GML), 20731 | — | Provisional |
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.