← 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 901–975 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 |
|---|---|---|---|
| QWM | P, TIR, M, TIRE ALL, P235/55R17-98W BW R/PE ST TL AL3 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| QWN | P, TIR, M, TIRE ALL, P225/50R17-93V BW R/PE ST TL AL3 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| QWQ | P, TIR, M, TIRE ALL, 165R14-84Q BW R/ST TL ALS | 1997 | Provisional |
| QWS | P, TIR, M, TIRE ALL, 165R14-84T BW R/ST TT | 1999 | Provisional |
| QWT | Tire All P245/40r19 XL 98w BW Al3 this code has more than one documented meaning — filter by year | — | Reference |
| QWU | P, TIR, M, TIRE ALL, P265/75R15-112S BW TL OOR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| QWW | P, TIR, M, TIRE ALL, P225/50R17-93W BW R/PE ST TL AL3, 11108 | — | GM sourced |
| QWX | P, TIR, M, TIRE ALL, P235/75R15-105T BW R/PE ST TL ALS | 1999 | GM sourced |
| QWY | P, TIR, M, TIRE ALL, P245/70R16-107H BW R/PE ST TL ALS | 1999 | GM sourced |
| QWZ | Tire All 245/45zr17 95w BW R/pe ST TL Al3 | — | Reference |
| QX1 | Wheel 18 X 8.5 FRT & 19 X 10 Rr, Aluminum, Painted Flangless | — | Reference |
| QX2 | Wheel 17 X 8.5, Aluminum, Polished, Flanged | — | Reference |
| QX3 | Wheel 18 X 8.5 FRT & 19 X 10 Rr, Chrome, Flangeless | — | Reference |
| QXA | P, TIR, M, TIRE ALL, 185/65R15-88T BW R/ST TL HWY | 1998 | GM sourced |
| QXB | P, TIR, M, TIRE ALL, 185/65R15-88H BW R/ST TL HWY | 1998 | GM sourced |
| QXC | P, TIR, M, TIRE ALL, 225/55R16-95V BW R/ST TL HWY | 1998 | GM sourced |
| QXD | P, TIR, M, TIRE ALL, 225/50R17-94W BW R/ST TL HWY | 1998 | Provisional |
| QXE | P, TIR, M, TIRE ALL, 245/40R18-93W BW R/ST TL HWY | 1998 | Provisional |
| QXF | P, TIR, M, TIRE ALL, 215/50R17-94V BW R/ST TL HWY | 1999 | Provisional |
| QXG | P, TIR, M, TIRE ALL, 225/50R17-94W BW ST/TL HW4, 10404 | — | GM sourced |
| QXH | Tire All 215/55r16-93h BW R/ry NY ST TL Al3 | — | Reference |
| QXJ | Tire All P225/60r16/n BL R/pe ST TL Al3 97u | — | Reference |
| QXK | P, TIR, M, TIRE ALL, P265/65R18-XXXS BW TL AL2, 20913 this code has more than one documented meaning — filter by year | — | GM sourced |
| QXL | P, TIR, M, TIRE ALL, 195/65R15-91T BW R/ST TL HWY | 1997 | GM sourced |
| QXM | P, TIR, M, TIRE ALL, P265/65R18-XXXS WOL TL AL2, 20913 | — | GM sourced |
| QXN | Tire All P265/65r18-112s BW TL Oor | — | Reference |
| QXO | P, TIR, M, TIRE ALL, P265/65R18-XXXS BW TL AL2 EXPORT, 20913 this code has more than one documented meaning — filter by year | — | GM sourced |
| QXP | P, TIR, M, TIRE ALL, P265/55R20-XXXS BW TL AL2, 20913 | — | GM sourced |
| QXQ | Tire All P265/65r18-112s Wol TL Oor | — | Reference |
| QXR | P, TIR, M, TIRE ALL, LT245/70R17/C BW ST TL AT, 20923 | — | GM sourced |
| QXT | Tires, LT265/70R17E all-terrain, blackwall this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| QXU | Tire All Lt265/70r17/e BW TL AT Export | — | Reference |
| QXV | P, TIR, M, TIRE ALL, P225/55R17-95V BW R/PE ST TL HW4, 10531 | — | GM sourced |
| QXX | Tire All 235/40r19-92w BW R/st TL Hw4 | — | Reference |
| QY3 | Wheel 18 X 7, Aluminum, Deluxe, Flangless | — | Reference |
| QY4 | Wheel Spare 17 X 4.0, Steel | — | Reference |
| QY8 | Wheel 17 X 8.5, Chrome, Polished, Flangeless | — | Reference |
| QYA | Tire All 225/50r17-94v BW R/st TL Al3 | — | Reference |
| QYB | P, TIR, M, TIRE ALL, 215/40ZR17 BW R/ST TL HWY | 1998 | Provisional |
| QYC | P, TIR, M, TIRE ALL, 235/45R17-94Y BW R/ST TL HWY, 1103 E, 0 | — | Provisional |
| QYD | P, TIR, M, TIRE ALL, P215/50ZR17 BW R/ST TL HWY, 10914 E, 3 | — | GM sourced |
| QYE | P, TIR, M, TIRE ALL, P245/70R16-107S BW R/PE ST TL ALS, 10327 E, 5 | — | Provisional |
| QYF | P, TIR, M, TIRE ALL, P225/50R17-93H BW R/PE ST TL AL3 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| QYG | P, TIR, M, TIRE ALL, P265/70R16-112S BW R/PE ST TL OOR, 10327 E, 5 | — | Provisional |
| QYH | Tire All P225/50r18-94t BW TL Al2 | — | Reference |
| QYK | P, TIR, M, TIRE ALL, LT215/85R16/D BW R/PE ST TL HWY | 1999 | GM sourced |
| QYL | P, TIR, M, TIRE ALL, LT215/85R16/D BW R/PE ST TL OOR | 1999 | GM sourced |
| QYO | Tire All P235/50r18-97v BW Al3 (front) P265/45r18-101v BW Al3 (rear) | — | Reference |
| QYR | Tire All 235/45r17-94v BW R/pe ST TL Al3 | — | Reference |
| QYS | Tire All 215/55r16-97h BW R/ry NY ST TL Al3 | — | Reference |
| QYT | P, TIR, M, TIRE ALL, P225/60R16-97H R/PE ST TL AL3 (GOLD LETTERING), 10510 | — | GM sourced |
| QYU | Tire All P225/55r17-101h BW R/pe ST TL Als | — | Reference |
| QYW | Tire All P215/60r16-94s BW R/pe ST TL Als | — | Reference |
| QYZ | Tire All this code has more than one documented meaning — filter by year | — | Reference |
| QZ1 | Wheel FRT 22.5 X 7.5, 8 Hole, 275mm BC Fn, 6.45 Offset, Alum Flanged | — | Reference |
| QZ2 | Wheel RR 22.5 X 7.5, 8 Hole, 275mm BC Fn, 6.45 Offset, Alum Flanged | — | Reference |
| QZ3 | Wheel FRT 22.5 X 7.5, 8 Hole, 275mm BC Fn, 6.20 Offset Flanged | — | Reference |
| QZ4 | Wheel RR 22.5 X 7.5, 8 Hole, 275mm BC Fn, 6.20 Offset Flanged | — | Reference |
| QZ6 | Wheel 17 X 7, Aluminum, Chrome, Flangeless | — | Reference |
| QZ7 | Wheel 17 X 7, Aluminum, Premium, Flangeless | — | Reference |
| QZA | P, TIR, M, TIRE ALL, 205/65R15-99H BW R/ST TL HWY | 1999 | GM sourced |
| QZB | P, TIR, M, TIRE ALL, 205/60R16-92V BW R/ST TL HWY | 1999 | Provisional |
| QZC | P, TIR, M, TIRE ALL, 195/45R16-80V BW R/ST TL, 20410 E, 0 | — | Provisional |
| QZD | Tire All P245/60r18-104s BW TL Als | — | Reference |
| QZF | Tire All P195/65r15 SL 89h BW Al2 (low Resistance) | — | Reference |
| QZH | P, TIR, M, TIRE ALL, 205/60R16-92W BW R/ST TL HWY | 1999 | Provisional |
| QZJ | Tire All P225/60r16-97s BW R/pe ST TL Als (fleet) | — | Reference |
| QZN | Tire All P245/50r19-103w BW TL Al3 | — | Reference |
| QZP | Wheel 16 X 6.5, Aluminum, Design 60 | — | Reference |
| QZQ | Tire All 215/60r16-95h BW R/st TL Hw3 (low Roll Resistance) | — | Reference |
| QZT | Tires, LT235/80R17E all-terrain, blackwall | 2026 | GM sourced |
| QZU | P, TIR, M, TIRE ALL, 205/60R15-91V BW R/ST TL this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| QZW | P, TIR, M, TIRE ALL, P205/60R14/N WOL R/PE ST TL HWY this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| QZY | Tire All- | — | Reference |
| QZZ | Tire All 225/50r17-94v BW R/st TL Hw4 (low Roll Resistance) | — | 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.