GM RPO Code Database

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Search the code list

24,366
codes on file
51,776
documented meanings
1973–2026
model years

Type a code, or describe the option in words. Every entry says where the meaning came from and which years we hold it for, because an RPO code can mean different things in different eras and a list that hides that is worse than no list.

CodeMeaningYearsSourcing
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 201–300 of 592 codes beginning with X. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

CodeMeaningYearsSourcing
XCG Tires, 275/50R22SL all-season, blackwall 2026 GM sourced
XCI Tires, 275/60R20SL all-season, blackwall 2026 GM sourced
XCJ P, FTR, M, TIRE FRONT, P255/70R16 WOL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1996 GM sourced
XCK Tires, 265/65R18SL all-terrain, blackwall this code has more than one documented meaning — filter by year 2026 GM sourced
XCM P, FTR, M TIRE FRONT, P215/75R15-100S WOL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
XCN Tire Front P275/60r15/n BL R/pe ST TL Al3 (9591303) — Reference
XCP P, FTR, M TIRE FRONT, P255/70R16-109H BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
XCQ Tire, spare 265/70R17SL all-season, blackwall 2026 GM sourced
XCS Tires, 275/55R20SL all-season, blackwall 2026 GM sourced
XCU P, FTR, M TIRE FRONT, P215/75R15/N BL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
XCV Tire Front P215/75r15/n Xnw R/pe ST TL Als (9591059) — Reference
XCW Tire Front P215/75r15/n Rwl R/pe ST TL Als (9591060) — Reference
XD2 P, COVER, SPARE WHEEL, FABRIC W/O GRAPHICS 1998 GM sourced
XDE P, FTR, M TIRE FRONT, 7.50-16LT/D BL D/NY TL HWY 1988 GM sourced
XDF P, FTR, M TIRE FRONT, P255/45R17-95V BW R/PE ST TL AL3, 20305 — Provisional
XDG P, FTR, M TIRE FRONT, P235/50R18-97W BW R/PE ST TL AL3, 20305 — GM sourced
XDQ P, FTR, M TIRE FRONT, 10.00R20/H 16PR BL RADIAL TT 1988 GM sourced
XDS P, FTR, M TIRE FRONT, P225/65R17-100S WOL PE/ST TL ALS, 328 — Provisional
XDT P, FTR, M TIRE FRONT, P225/65R17-100S BW PE/ST TL ALS, 612 — Provisional
XE2 P, LOCAL, 0029981 1992 GM sourced
XE3 P, LOCAL, 0029982 1992 GM sourced
XE4 P, SALES PACKAGE, EXTERIOR, FRONTERA SPORT, 119 — Provisional
XE5 P, EQC, R EQUIPMENT ADDITIONAL, NEW ZEALAND (USE E13 IN FUTURE) 1997 GM sourced
XE6 P, SALES PACKAGE, EXTERIOR, FRONTERA, 119 — Provisional
XEA Tire Front 7.50-16lt/d BL D/pe TL Hwy — Reference
XEB P, FTR, M TIRE FRONT, P235/75R15/N WOL R/PE ST TL OOR this code has more than one documented meaning — filter by year 1988 GM sourced
XEC P, FTR, M TIRE FRONT, LT215/85R16/E BW R/ST ST TL HWY this code has more than one documented meaning — filter by year 1994 GM sourced
XED Tire Front 8.00r19.5/e BW R/st TL Bridgestone — Reference
XEF P, FTR, M TIRE FRONT, LT215/85R16/E BW R/PE ST TL OOR this code has more than one documented meaning — filter by year 1999 GM sourced
XEG P, FTR, M TIRE FRONT, P205/75R15-97S BW R/PE ST TL ALS (50 PSI) this code has more than one documented meaning — filter by year 1996 GM sourced
XEN P, FTR, M TIRE FRONT, P235/75R16-109S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1999 GM sourced
XEO P, FTR, M TIRE FRONT, P235/75R16-109S WS R/PE ST TL ALS this code has more than one documented meaning — filter by year 1999 GM sourced
XEP P, FTR, M TIRE FRONT, P235/75R16-109S WOL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1999 GM sourced
XER P, FTR, M TIRE FRONT, LT265/75R16/E BW R/PE ST TL OOR (123/120Q), 20308 — GM sourced
XES P, FTR, M TIRE FRONT, P235/75R15-105S BW R/PE ST TL OOR this code has more than one documented meaning — filter by year 1999 GM sourced
XET P, FTR, M TIRE FRONT, P225/75R15 BW R/PE ST TL ALS, 11108 this code has more than one documented meaning — filter by year — GM sourced
XEU Tire Front P225/75r15/n Xnw R/pe ST TL Als — Reference
XEV Tire Front P225/75r15/n Rwl R/pe ST TL Als — Reference
XF2 P, EQUIPMENT, BEDFORD BADGE SALES 1992 GM sourced
XF4 P, LOCAL, 0030019 1992 GM sourced
XF5 P, LOCAL, 0030020 1992 GM sourced
XF6 P, EQC, R EQUIPMENT ADDITIONAL, GREECE 1996 GM sourced
XF7 P, WINDOW, SLIDING, FRT SIDE 1998 GM sourced
XF8 P, LOCAL, 0030023 1992 GM sourced
XF9 P, EQUIPMENT, WIRING HARNESS, RADIO- NAVIGATION FEATURES, SUBSTITUTE OPTION W/O PHONE, 530 — Provisional
XFA Tire Front P235/75r15 Wol R/pe ST TL Als 105s — Reference
XFD Tire Front P225/75r15 Wol R/pe ST TL Oor 102s — Reference
XFE Package Extended Fuel Economy — Reference
XFG Tire Front P285/30zr19 BW TL Hw4 Emt — Reference
XFH Tire All P285/30zr19 LL 87y BW Rf5(frt) P335/25zr20 LL 9 4Y BW Rf5(rr) — Reference
XFJ Tire All P245/35zr19 SL (89y) BW Rf4 (front) P285/30zr20 SL (95y) BW Rf4 (rear) — Reference
XFK Tire All P285/30zr19 SL BW Rf4 (frt) P335/25zr20 SL BW Rf4 (rear) — Reference
XFL P, FTR, M TIRE FRONT, P235/75R15-105S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
XFM Tire All P285/30zr19 SL BW Rf5 (frt) P335/25zr20 SL BW Rf5 (rear) — Reference
XFN P, FTR, M TIRE FRONT, P235/75R15-105S RWL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
XFR Tire Front P255/45zr17 BW TL Sbr Hw4 Emt — Reference
XFT Tire Front P205/75r14/n BL R/pe ST TL Als — Reference
XFV P, FTR, M TIRE FRONT, P245/40ZR18-88Y BW HW4 (EMT), 608 — GM sourced
XFW P, FTR, M TIRE FRONT, P265/40R17-91Y BW R/PE ST TL HW4 this code has more than one documented meaning — filter by year 1998 GM sourced
XG1 P, EQUIPMENT, WIRING HARNESS, RADIO- NAVIGATION FEATURES, SUBSTITUTE OPTION WITH PHONE, 530 — Provisional
XG3 P, EQC, R EQUIPMENT ADDITIONAL, GERMANY 1996 GM sourced
XG4 P, LOCAL, 0030055 1992 GM sourced
XG6 P, LOCAL, 0030057 1992 GM sourced
XG7 P, WHL, M WHEEL, EMBELLISHER, PLASTIC 1992 GM sourced
XGA P, FTR, M TIRE FRONT, P245/75R16-109S BW R/PE ST TL AT this code has more than one documented meaning — filter by year 1997 GM sourced
XGB P, FTR, M TIRE FRONT, P245/75R16-109S WOL R/PE ST TL AT this code has more than one documented meaning — filter by year 1997 GM sourced
XGC P, FTR, M TIRE FRONT, P265/75R16-114S BW R/PE ST TL AT this code has more than one documented meaning — filter by year 1997 GM sourced
XGD Tires, LT265/60R22 E all-terrain blackwall this code has more than one documented meaning — filter by year 2026 GM sourced
XGF P, FTR, M TIRE FRONT, P255/45R19-100H BW ST TL HW4, 10119 — GM sourced
XGG P, FTR, M TIRE FRONT, P245/45R17-89Y BW TL R/ST HW4 EMT, 20308 — GM sourced
XGI Tire Front 8.75r16.5/e BL R/pe ST NY TL Hwy — Reference
XGK P, FTR, M TIRE FRONT, LT245/75R16/E BW R/PE ST TL OOR 120Q this code has more than one documented meaning — filter by year 1997 GM sourced
XGL P, FTR, M TIRE FRONT, LT265/75R16/C BL R/PE ST OOR this code has more than one documented meaning — filter by year 1988 GM sourced
XGM Tire Front Lt265/75r16/c Wol R/pe ST Oor(9591658) — Reference
XGN P, FTR, M TIRE FRONT, P245/40ZR18-88Y BW HW4 (EMT) HI-PERFORMANCE, 608 — GM sourced
XGP Tire Front P255/45r18-99w BW TL Hw4 — Reference
XGR P, FTR, M TIRE FRONT, P235/50R17-95S BW TL AL2 this code has more than one documented meaning — filter by year 1998 GM sourced
XGY P, FTR, M TIRE FRONT, P205/70R15-95S BW R/PE ST TL ALS this code has more than one documented meaning — filter by year 1997 GM sourced
XH7 P, EQUIPMENT, PACKAGE, REDUCED GVW 1992 GM sourced
XHA P, FTR, M TIRE FRONT, P235/75R15/X BL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
XHB P, FTR, M TIRE FRONT, P235/75R15/X WS2 R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
XHC P, FTR, M TIRE FRONT, P235/65R17-103H BW TL AL3, 11120 — GM sourced
XHD P, FTR, M TIRE FRONT, P255/60R17-105H BW TL AL3, 11120 — Provisional
XHE Tire Front Lt225/75r16/c BL R/pe ST Als(9591202) — Reference
XHF P, FTR, M TIRE FRONT, LT225/75R16/E BL R/PE ST ALS this code has more than one documented meaning — filter by year 1988 GM sourced
XHH P, FTR, M TIRE FRONT, LT245/75R16/E BW R/PE ST TL ALS 120Q this code has more than one documented meaning — filter by year 1997 GM sourced
XHJ Tire Front Lt225/75r16/c BL R/pe ST Oor(9591209) — Reference
XHM P, FTR, M TIRE FRONT, P235/75R15-108S WOL R/PE ST TL ALS (X/LOAD) this code has more than one documented meaning — filter by year 1997 GM sourced
XHN P, FTR, M TIRE FRONT, LT225/75R16/C WOL R/PE ST OOR this code has more than one documented meaning — filter by year 1988 GM sourced
XHP P, FTR, M TIRE FRONT, LT225/75R16/D BL R/PE ST TL ALS this code has more than one documented meaning — filter by year 1988 GM sourced
XHQ Tire Front Lt225/75r16/d Xnw R/pe ST TL Als (9591298) — Reference
XHR P, FTR, M TIRE FRONT, LT225/75R16/D BL R/PE ST TL OOR this code has more than one documented meaning — filter by year 1988 GM sourced
XHS P, FTR, M TIRE FRONT, P265/75R16-114H BW R/PE ST TL AT "A" TEMP RATING this code has more than one documented meaning — filter by year 1998 GM sourced
XHT Tire Front 265/75r16-116h BW TL AT — Reference
XHV Tire Front Lt225/75r16/c WS R/ PE ST Als (9591301) — Reference
XHW P, FTR, M TIRE FRONT, LT315/70R17 BW TL OOR, 522 — GM sourced
XHX Tire Frt-p205/70r14/ — Reference
XHY Tire Frt-lt315/70r17/d BW TL All Terrain — Reference
XHZ Tire Front Lt315/70r17/d BW TL Mud-terrain — Reference
XIB Tire Front P245/60hr15/n Wol R/pe ST TL Hwy Al3 (9591430) — 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.

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