← 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 601–700 of 702 codes beginning with Y. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| YSL | P, RTR, M, TIRE REAR, 275/80R22.5/H 16PR BL TL RADIAL this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| YSM | P, RTR, M, TIRE REAR, 225/70R19.5/F BW R/ST TL ALS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YSN | Tire 8.00-19.5-e (tbls) Hwy-polyester | — | Reference |
| YSR | Tire Rear P235/75r16-106s BW TL Oor | — | Reference |
| YSS | P, RTR, M, TIRE REAR, P275/55R20-111S BW TL ST AL2, 20405 | — | GM sourced |
| YSX | Tire Rear 8.25-20.0/f 12pr BL Bias TT | — | Reference |
| YT0 | P, FIN, R, FLEET INCENTIVE, HEARST CORPORATION (C/G/H/K/U/W-TRK CKGJMLST), 21016 | — | Provisional |
| YT1 | P, FLEET PROGRAM, FALL/WINTER/SPRING REPURCHASE (B/C/D/F/G/H/J/K/M/NS/U/V/W/Z-TRK CKGJMPST, 20409 | — | GM sourced |
| YT2 | P, FLEET PROGRAM, REPURCHASE (C/D/F/G/H/J/K/M/N/S/U/V/W/Z-TRK, CKJGMPST), 20409 | — | GM sourced |
| YT3 | Build-up,luxury Door And Quarter | — | Reference |
| YT4 | P, FLEET PROGRAM, EXPOSURE INITIATIVE D: C/F/G/H/J/K/M/N/S/U/V/W/Z- TRK CKGMPST | 1997 | GM sourced |
| YT5 | P, FLEET PROGRAM, EXPOSURE INITIATIVE E: C/E/F/G/H/J/K/M/N/S/U/V/W/ZTRK CKGMPST, 718 | — | Provisional |
| YT6 | Trim,special Interior Build-up | — | Reference |
| YT7 | Reminder Group | — | Reference |
| YT8 | P, FLEET PROGRAM, EXPOSURE INITIATIVE H: C/F/G/H/J/K/M/N/S/U/V/W/Z- TRK CKGMPST, 718 | — | Provisional |
| YT9 | P, FLEET PROGRAM, EXPOSURE INITIATIVE I: C/F/G/H/J/K/M/N/S/U/V/W/Z- TRK CKGMPST, 718 | — | Provisional |
| YTA | P, RTR, M, TIRE REAR, 225/70R19.5/F BW R/ST TL OOR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YTB | P, RTR, M, TIRE REAR, 255/70R22.5/H 16PR BL TL RADIAL this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YTC | Tire Rear 265/70r19.5/g 14pr BL TL Rad | — | Reference |
| YTE | Tire Rear P245/65r17-105s BW Pe/st TL Oor | — | Reference |
| YTH | Tire Rear 8.75-16.5lt/e BL D/ny TH Hwy (3927095) | — | Reference |
| YTI | P, RTR, M, TIRE REAR, 245/70R19.5/F 12PR BL TL RAD this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| YTJ | Tire Rear 225/70r19.5/f BW R/st ST TL Oor | — | Reference |
| YTK | Tire Rear P285/35zr19 BW Hw4 (emt) High-performance | — | Reference |
| YTN | P, RTR, M, TIRE REAR, 225/70R19.5/F BW R/ST ST TL HWY this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| YTP | P, RTR, M, TIRE REAR, 215/70R16-100T BW PE/ST TL HWY (BFS), 20812 | — | GM sourced |
| YTQ | P, RTR, M, TIRE REAR, 245/75R22.5/G BL TL RAD this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YTU | P, RTR, M, TIRE REAR, 265/75R22.5/G BL TL RAD this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YTV | P, RTR, M, TIRE REAR, 8.00R19.5/E BW TL R/ST HWY R/B GOODYEAR WRANGLER this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YTW | P, RTR, M, TIRE REAR, 8.00R19.5/F BW R/PE ST TL HWY this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| YTX | P, RTR, M, TIRE REAR, 8.00R19.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YTY | P, RTR, M, TIRE REAR, 245/70R19.5/G 14PR BL TL RAD this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| YU5 | P, WAR, R, WARRANTY, 50,000 MILES, 3 YEARS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YU8 | P, WHEEL SINGLE, POLISHED ALUMINUM, ONE SIDE, FRT this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| YUB | Tire Rr-p195/70r15/ | — | Reference |
| YUC | P, RTR, M, TIRE REAR, 225/60R16-98S WOL TL ALS, 914 E 1 | — | GM sourced |
| YUE | P, RTR, M, TIRE REAR, 9.00R22.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YUF | P, RTR, M, TIRE REAR, 225/60R16-98S BW TL ALS this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| YUH | Tire Rear 9.00r22.5/g 14pr BL Radial TL | — | Reference |
| YUI | P, RTR, M, TIRE REAR, 10.00-20/F 12PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YUJ | P, RTR, M, TIRE REAR, 10.00-20/G 14PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YUK | Tire Rear 9.00-20.0/e 10pr BL Bias TT | — | Reference |
| YUM | Tire Rear 9.00-22.5/e 10pr BL Bias TL | — | Reference |
| YUN | P, RTR, M, TIRE REAR, 9.00R20.0/F 12PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YUQ | P, RTR, M, TIRE REAR, 10.00-20/H 16PR BL BIAS TT | 1997 | Provisional |
| YUR | Tire Rear 10.00-22.5/f 12pr BL Bias TL | — | Reference |
| YUV | P, RTR, M, TIRE REAR, 9.00R20.0/G 14PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YUX | P, RTR, M, TIRE REAR, 195/65R15-91H BW TL R/ST | 1999 | GM sourced |
| YUZ | Tire Rear 31x10.50r15lt/b Wol R/pe ST TL Oor (9591094) | — | Reference |
| YVA | P, RTR, M, TIRE REAR, P235/60R18-102V BW TL AL3, 11120 | — | Provisional |
| YVB | P, RTR, M, TIRE REAR, P255/55R18-104V BW TL AL3, 11120 | — | GM sourced |
| YVD | Tire Rear 8.75r16.5/e BL R/pe ST TL Hwy (9590755) | — | Reference |
| YVE | P, RTR, M, TIRE REAR, 9.00-20 14PR BL R/PE ST TL OOR GDY (SEO) | 1997 | GM sourced |
| YVI | Tire Rear 10.00/90r20/f 12pr BL Radial TT | — | Reference |
| YVL | P, RTR, M, TIRE REAR, P265/70R17-113S BW R/PE ST TL ALS, 1106 | — | GM sourced |
| YVM | P, RTR, M, TIRE REAR, P265/70R17-113S WOL R/PE ST TL ALS, 1106 | — | GM sourced |
| YVQ | Tire Rear 8.00-19.5/d 8pr BL Bias TL | — | Reference |
| YW2 | P, SALES PACKAGE, WRECKER this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| YW3 | Ornamentation Extr, Chrome | — | Reference |
| YW7 | P, WAR, R, WARRANTY, 50,000 MILES, 4 YEARS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YW9 | Ups Retrofit Kit | — | Reference |
| YWC | P, RTR, M, TIRE REAR, 11.00-20.0/G 14PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWD | Tire Rear 11.00-22.5/f 12pr BL Bias TL | — | Reference |
| YWE | Tire Rear 11.00-22.5/g 14pr BL Bias TL | — | Reference |
| YWG | P, RTR, M, TIRE REAR, 7.50R16/D BW R/ST ST TL HWY this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| YWH | P, RTR, M, TIRE REAR, 10.00R20/G 14PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWJ | P, RTR, M, TIRE REAR, 10.00R22.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWK | P, RTR, M, TIRE REAR, 10.00R22.5/G 14PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWL | P, RTR, M, TIRE REAR, 11.00R22.5/G 14PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWM | P, RTR, M, TIRE REAR, 11.00R22.5/H 16PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWP | P, RTR, M, TIRE REAR, 12.00R22.5/H 16PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| YWT | Tire Rear P245/60r15 Wol R/pe ST TL Al3 100t | — | Reference |
| YWU | P, RTR, M, TIRE REAR, P265/75R15-112S BW TL OOR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YWX | P, RTR, M, TIRE REAR, 11.00-20 12PR D/NY TT (OVERSEAS) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YWY | P, RTR, M, TIRE REAR, 7.50R16/D BL R/PE ST TL HWY | 1988 | GM sourced |
| YX2 | P, WAR, R, WARRANTY, 50,000 MILES, 5 YEARS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YX4 | P, WAR, R, WARRANTY, ENGINE ONLY, 150,000 MILES, 4 YEARS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YX6 | P, PSN, R, ATTACHMENT, MAIN DRIVELINE ONE SHAFT SYSTEM this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YX7 | P, PSN, R, ATTACHMENT, MAIN DRIVELINE TWO SHAFT SYSTEM this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| YX8 | P, PSN, R, ATTACHMENT, MAIN DRIVELINE THREE SHAFT SYSTEM this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| YX9 | P, PSN, R, ATTACHMENT, MAIN DRIVELINE FOUR SHAFT SYSTEM this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| YXN | Tire Rear P265/65r18-112s BW TL Oor | — | Reference |
| YXR | Tire Rear Lt245/70r17/c BW ST TL AT | — | Reference |
| YY3 | P, WAR, R, WARRANTY, 100,000 MILES, 3 YEARS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| YY5 | P, PAINT PROCESS, FUEL TANK this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| YY7 | P, PAINT PROCESS, CHASSIS this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| YY8 | P, PAINT PROCESS, BUMPER this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| YY9 | P, PAINT PROCESS, WHEEL this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| YYH | Tire Rear P215/65r15/n Wol R/pe ST TL Hwy | — | Reference |
| YYJ | Tire Rear Lt215/85r16/c BL R/pe ST TL Hwy (9590793) | — | Reference |
| YYK | P, RTR, M, TIRE REAR, LT215/85R16/D BL R/PE ST TL HWY this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YYL | P, RTR, M, TIRE REAR, LT215/85R16/D BL R/PE ST TL OOR this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| YYM | Tire Rear Lt235/85r16/d BL R/pe ST TL Hwy (9590799) | — | Reference |
| YYN | Tire Rear Lt235/85r16/e BL R/pe ST TL Hwy (9590803) | — | Reference |
| YYR | P, RTR, M, TIRE REAR, P245/50R17-98H BW R/PE ST TL AL3 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| YYT | Tire Rear Lt235/85r16/e BL R/pe ST TL Oor (9590801) | — | Reference |
| YYY | P, VEHICLE, SPECIAL, OUTSIDE COMPANY ADAPTATION | 1996 | Provisional |
| YZ1 | P, PAINT PROCESS, SPECIAL, REVIEW | 1991 | GM sourced |
| YZ2 | P, WHEEL ADDITIONAL, FIFTH, SPECIAL REVIEW | 1991 | GM sourced |
| YZ3 | P, FLEET PROCESSING, SPECIAL INSTRUCTIONS | 1989 | 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.