← 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 501–592 of 592 codes beginning with X. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| XTP | P, FTR, M, TIRE FRONT, 215/70R16-100T BW PE/ST TL HWY (BFS), 20812 | — | GM sourced |
| XTQ | P, FTR, M, TIRE FRONT, 245/75R22.5/G BL TL RAD this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| XTR | Performance Package Extreme | — | Reference |
| XTU | P, FTR, M, TIRE FRONT, 265/75R22.5/G BL TL RAD this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| XTV | P, FTR, M, TIRE FRONT, 8.00R19.5/E BW R/ST TL HWY R/B GOODYEAR WRANGLER this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| XTW | P, FTR, M, TIRE FRONT, 8.00R19.5/F BW R/PE ST TL HWY this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| XTX | P, FTR, M, TIRE FRONT, 8.00R19.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XTY | P, FTR, M, TIRE FRONT, 245/70R19.5/G 14PR BL TL RAD this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| XU6 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV SUPERCHARGED V6 - XU6, 1217 E, 8, 8, A | — | Provisional |
| XU7 | P, KIT, AFTER MARKET 17X8 "H" SERIES ALLOY WHEEL & TIRE, 10302 P, 8, 8, A | — | Provisional |
| XU8 | P, KIT, AFTER MARKET 16X7 SERIES ALLOY WHEEL & TIRE(V), 10302 E, 8, 8, A | — | Provisional |
| XU9 | P, KIT, AFTER MARKET 16X7 SERIES ALLOY WHEEL & TIRE, 10302 E, 8, 8, A | — | Provisional |
| XUB | Tire Frt-p195/70r15/ | — | Reference |
| XUC | P, FTR, M, TIRE FRONT, 225/60R16-98S WOL TL ALS, 914 E, 1 | — | GM sourced |
| XUE | P, FTR, M, TIRE FRONT, 9.00R22.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XUF | P, FTR, M, TIRE FRONT, 225/60R16-98S BW TL ALS this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| XUH | Tire Front 9.00r22.5/g 14pr BL Radial TL | — | Reference |
| XUI | P, FTR, M, TIRE FRONT, 10.00-20/F 12PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XUJ | P, FTR, M, TIRE FRONT, 10.00-20/G 14PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XUK | Tire Front 9.00-20.0/e 10pr BL Bias TT | — | Reference |
| XUM | Tire Front 9.00-22.5/e 10pr BL Bias TL | — | Reference |
| XUN | P, FTR, M, TIRE FRONT, 9.00R20.0/F 12PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XUQ | P, FTR, M, TIRE FRONT, 10.00-20/H 16PR BL BIAS TT | 1997 | Provisional |
| XUR | Tire Front 10.00-22.5/f 12pr BL Bias TL | — | Reference |
| XUV | P, FTR, M, TIRE FRONT, 9.00R20.0/G 14PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XUX | P, FTR, M, TIRE FRONT, 195/65R15-91H BW TL R/ST | 1999 | Provisional |
| XUZ | Tire Front 31x10.50 R15lt/b Wol R/pe ST TL Oor (9591094) | — | Reference |
| XV1 | P, KIT, AFTER MARKET 17X8 "RT" SERIES ALLOY WHEEL & TIRE, 10302 E, 8, 8, A | — | Provisional |
| XV3 | P, KIT, AFTER MARKET 17X8 "X" SERIES ALLOY WHEEL & TIRE, 10302 P, 8, 8, A | — | Provisional |
| XV8 | P, KIT, AFTER MARKET HBD CARGO LINER, 1205 E, 8, 8, A | — | Provisional |
| XVA | P, FTR, M, TIRE FRONT, P235/60R18-102V BW TL AL3, 11120 | — | GM sourced |
| XVB | P, FTR, M, TIRE FRONT, P255/55R18-104V BW TL AL3, 11120 | — | Provisional |
| XVD | Tire Front 8.75 R 16.5/e BL R/pe ST TL Hwy (9590755) | — | Reference |
| XVE | P, FTR, M, TIRE FRONT, 9.00-20 14PR BL R/ TT HWY (OVERSEAS) | 1997 | Provisional |
| XVI | Tire Front 10.00/90r20/f 12pr BL Radial TT | — | Reference |
| XVL | P, FTR, M, TIRE FRONT, P265/70R17-113S BW R/PE ST TL ALS, 1106 | — | GM sourced |
| XVM | P, FTR, M, TIRE FRONT, P265/70R17-113S WOL R/PE ST TL ALS, 1106 | — | GM sourced |
| XVN | Van Package | — | Reference |
| XVQ | Tire Front 8.00-19.5/d 8pr BL Bias TL | — | Reference |
| XW1 | P, SGR, R, MERCHANDISED PKG, HOLDENS SENATOR MANUAL | 1998 | Provisional |
| XW5 | P, SGR, R, MERCHANDISED PKG, HOLDENS SENATOR AUTOMATIC | 1998 | Provisional |
| XW6 | P, CCT, R, PAINT, FINISH METALLIC | 1998 | GM sourced |
| XW7 | P, CCT, R, PAINT, FINANCE CLR OPTION, 1005 E, 8, 8, A | — | Provisional |
| XWA | Tire Front 13/80r20/j 18pr BL Radial TT | — | Reference |
| XWB | Tire Front 11.00-20.0/f 12pr BL Bias TT | — | Reference |
| XWC | P, FTR, M, TIRE FRONT, 11.00-20.0/G 14PR BL BIAS TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWD | Tire Front 11.00-22.5/f 12pr BL Bias TL | — | Reference |
| XWE | Tire Front 11.00-22.5/g 14pr BL Bias TL | — | Reference |
| XWG | P, FTR, M, TIRE FRONT, 7.50R16/D BW R/ST ST TL HWY this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| XWH | P, FTR, M, TIRE FRONT, 10.00R20/G 14PR BL RADIAL TT this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWJ | P, FTR, M, TIRE FRONT, 10.00R22.5/F 12PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWK | P, FTR, M, TIRE FRONT, 10.00R22.5/G 14PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWL | P, FTR, M, TIRE FRONT, 11.00R22.5/G 14PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWM | P, FTR, M, TIRE FRONT, 11.00R22.5/H 16PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWN | P, FTR, M, TIRE FRONT, 315/80R22.5/J 18PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| XWO | Tire Front 11.00r24.5/g 14pr BL Radial TL | — | Reference |
| XWP | P, FTR, M, TIRE FRONT, 12.00R22.5/H 16PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| XWR | P, FTR, M, TIRE FRONT, 315/80R22.5/L 20PR BL RADIAL TL this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| XWT | Tire Front P245/60r15 Wol R/pe ST TL Al3 100t | — | Reference |
| XWU | P, FTR, M, TIRE FRONT, P265/75R15-112S BW TL OOR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| XWX | P, FTR, M, TIRE FRONT, 7.50R16/D BL R/PE ST TL OOR | 1988 | GM sourced |
| XWY | P, FTR, M, TIRE FRONT, 7.50R16/D BL R/PE ST TL HWY | 1988 | Provisional |
| XX1 | P, RDO, M, RADIO, 1 -(PRELIMINARY CODE)-TAPE DECK | 1997 | Provisional |
| XX2 | P, RDO, M, RADIO, 2 -(PRELIMINARY CODE)-TAPE DECK | 1997 | Provisional |
| XX3 | P, RDO, M, RADIO, 3 -(PRELIMINARY CODE)-CD PLAYER | 1997 | Provisional |
| XX4 | P, RDO, M, RADIO, 4 -(PRELIMINARY CODE)-TAPE DECK | 1997 | Provisional |
| XX5 | P, RDO, M, RADIO, PROVISIONS, INSTALLATION, VAR 1 | 1998 | GM sourced |
| XX6 | P, RDO, M, RADIO, PROVISIONS, INSTALLATION, VAR 2 | 1998 | GM sourced |
| XX7 | P, RDO, M, RADIO, PROVISIONS, INSTALLATION, VAR 3 | 1998 | GM sourced |
| XX8 | P, RDO, M, RADIO, 5 -(PRELIMINARY CODE)-TAPE DECK & CD CHANGER | 1997 | Provisional |
| XX9 | P, CHASSIS, SPORT, LOWERED, RR, 1108 E, 0, 0, A | — | Provisional |
| XXN | Tire Front P265/65r18-112s BW TL Oor | — | Reference |
| XXR | Tire Front Lt245/70r17/c BW ST TL AT | — | Reference |
| XXX | Radio Provisions, Installation, Var 4 | — | Reference |
| XY2 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV GTS AUTO | 1998 | GM sourced |
| XY3 | Merchandised Pkg Holdens Hsv Clubsport / Gts / Vxr8 | — | Reference |
| XY4 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV AWD CREW CAB AUTOMATIC, 20630 E, 8, 8, A | — | Provisional |
| XY5 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV MALOO UTE AUTOMATIC, 507 E, 8, 8, A | — | Provisional |
| XY6 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV MALOO UTE MANUAL, 507 E, 8, 8, A | — | Provisional |
| XY7 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV CLUB SPORT MANUAL - 8VK69 - CLUBSPORT, 1217 E, 8, 8, A | — | Provisional |
| XY8 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV CLUB SPORT AUTOMATIC | 1998 | Provisional |
| XY9 | P, SGR, R, MERCHANDISED PKG, HOLDENS HSV GTS MANUAL(8VL69)/CLUBSPORT(8VK69), 1214 E, 8, 8, A | — | Provisional |
| XYA | Tire Front P235/45r19-95w BW Al3 Emt | — | Reference |
| XYF | P, FTR, M, TIRE FRONT, P225/50R17-93H BW R/PE ST TL AL3 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| XYH | Tire Front P215/65r15/n Owl R/pe ST TL Hwy (9590776) | — | Reference |
| XYJ | Tire Front Lt215/85r16/c BL R/pe ST TL Hwy (9590793) | — | Reference |
| XYK | P, FTR, M, TIRE FRONT, LT215/85R16/D BL R/PE ST TL HWY this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| XYL | P, FTR, M, TIRE FRONT, LT215/85R16/D BL R/PE ST TL OOR this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| XYM | Tire Front Lt235/85r16/d BL R/pe ST TL Hwy (9590799) | — | Reference |
| XYN | Tire Front Lt235/85r16/e BL R/pe ST TL Hwy (9590803) | — | Reference |
| XYT | Tire Front Lt235/85r16/e BL R/pe ST TL Oor (9590801) | — | Reference |
| XZ1 | P, EQUIPMENT, PACKAGE, HOT WEATHER | 1997 | 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.