← 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 101–200 of 955 codes beginning with B. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| B36 | P, COVERING, FLOOR MAT, LUGG COMPT this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| B37 | P, COVERING, FLOOR MAT, FRT & RR, AUX this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| B38 | P, FLC, R COVERING FLOOR, VINYL, FRT & RR, FULL WIDTH this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B39 | P, COVERING, FLOOR CARPET, LOAD FLOOR this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| B3A | Compartment,rear,package Shelf,storage,w/o Lid | — | Reference |
| B3B | Ornamentation Intr, Sport | — | Reference |
| B3C | P, FIN, R FLEET INCENTIVE, ASHLAND OIL (A/B/C/G/H/U/W-TRK CKGMST), 10723 P 1 | — | GM sourced |
| B3D | P, EQUIPMENT, SCHOOL BUS this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| B3E | P, NOISE CONTROL, 80DB NOISE PASS-BY JURISDICTION | 1998 | GM sourced |
| B3F | P, FIN, R FLEET INCENTIVE, H.T. HACKNEY CO (H/J/S/W-TRK GKGML), 10723 P 1 this code has more than one documented meaning — filter by year | — | GM sourced |
| B3G | P, FIN, R FLEET INCENTIVE, BUDGET RAC, LAS VEGAS & TUCSON (B/J/N/U/W-TRK CKST), 11023 | — | GM sourced |
| B3H | C, COVERING, FLOOR CARPET, LOAD FLOOR - DELETE | 1998 | GM sourced |
| B3I | Sales Spring Special Var 2 | — | Reference |
| B3J | P, EQUIPMENT, DIESEL this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| B3K | Ornamentation,extr,mldg,si T/sig LP this code has more than one documented meaning — filter by year | — | Reference |
| B3L | Assist steps, power-retractable with perimeter lighting | 2026 | GM sourced |
| B3M | P, EQUIPMENT, SCHOOL BUS, DELUXE this code has more than one documented meaning — filter by year | 1986 | GM sourced |
| B3N | P, COVERING, FLOOR MAT, FRT & RR, AUX - NOT DESIRED, 20205 | — | Provisional |
| B3P | P, SALES PROCESSING OPT, BAILMENT COMMERCIAL | 1991 | GM sourced |
| B3Q | Ornamentation Intr, Bright | — | Reference |
| B3R | P, FIN, R FLEET INCENTIVE, S.C.INTERNATIONAL SERVICES, INC. (J/N/W-TRK CKGML), 20812 | — | GM sourced |
| B3S | Tire All- P205/50 R15/n BL R/pe ST TL Hw4 | — | Reference |
| B3T | Hood Active, Pedestrian Protection | — | Reference |
| B3U | Equipment Control,non-school Bus | — | Reference |
| B3V | P, TEST, EXTENDED WATER, 20513 P 3 | — | GM sourced |
| B3W | P, TEST, WATER - DELETE | 1998 | Provisional |
| B3X | P, EQUIPMENT, SHIP THROUGH TO ADRIAN | 1990 | Provisional |
| B3Y | P, FLEET PROGRAM, FLEET ORDERS | 1998 | GM sourced |
| B3Z | P, TEST, VEHICLE, EMISSION SYSTEM | 1989 | GM sourced |
| B40 | P, COVERING, LOAD COMPARTMENT, RIGID | 1999 | Provisional |
| B41 | P, COVERING, FLOOR MAT, LOAD FLOOR | 1996 | GM sourced |
| B42 | P, COVERING, FLOOR MAT, LUGG COMPT, FITTED this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| B43 | P, COVERING, LOAD FLOOR, TEXTURED SURFACE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B44 | P, LAG, R, LABEL, APO COMPLIANCE | 1998 | GM sourced |
| B45 | P, TLC, R, TRIM EQUIPMENT, FLEET USE - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B46 | P, TLC, R, TRIM EQUIPMENT, SPECIAL ORDER this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| B47 | P, TLC, R, TRIM EQUIPMENT, INTERIOR, TRIM PANEL | 1998 | Provisional |
| B48 | P, TLC, R, TRIM EQUIPMENT, LUGG COMPT this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| B49 | P, COVERING, FLOOR CARPET, LOAD FLOOR , CUSTOM, 328 E 5 | — | GM sourced |
| B4A | P, PANEL, ROOF, BLACK - DELETE | 1998 | GM sourced |
| B4B | P, IDENTIFICATION, PRE-PILOT, BUILD 01 | 1998 | Provisional |
| B4C | C, SALES, SPECIAL SERVICE POLICE PKG | 1997 | GM sourced |
| B4D | Modification Noise Control, Not Installed | — | Reference |
| B4E | Luxury Touring 'lt' Package | — | Reference |
| B4F | Security Lighting Package | — | Reference |
| B4G | P, DEALER HOLD BACK, EXCLUSION | 1986 | GM sourced |
| B4H | P, MODIFICATION, NOISE CONTROL, EXPORT | 1990 | GM sourced |
| B4J | P, HLG, R, HANDLING CHARGE, TARRYTOWN TO ADSCOM IN BALTIMORE, MD TO T & B IN BALTIMORE | 1998 | Provisional |
| B4K | P, HLG, R, HANDLING CHARGE, TARRYTOWN TO MIDWAY COACH, ELKHART, IN | 1998 | GM sourced |
| B4L | P, LAG, R, LABEL, PRICE REFER GEOGRAPHIC CHART | 1998 | Provisional |
| B4M | P, VEHICLE, CUSTOM FEATURE PACKAGE this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| B4N | P, HLG, R, HANDLING CHARGE, TARRYTOWN TO ESSEX, MD TO T & B IN BALTIMORE | 1998 | GM sourced |
| B4O | MERCHANDISED PKG, ‘GT’ | — | Provisional |
| B4P | Fan,radiator Cooling Boost | — | Reference |
| B4Q | P, SGR, R, MERCHANDISED PKG, GT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B4S | Merchandised Pkg 'gtp' | — | Reference |
| B4T | P, HLG, R, HANDLING CHARGE, TARRYTOWN TO MASTERACK BACK TO BALTIMORE | 1995 | Provisional |
| B4U | Diesel Off-Road Package | 2022–2023 | GM sourced |
| B4V | Performance Package High Output, Engine | — | Reference |
| B4W | P, ORNAMENTATION, INTR, HEADLINER, CHARCOAL, 21106 E 0 | — | GM sourced |
| B4X | Sport Appearance Package | — | Reference |
| B4Z | P, APP, R, APPEARANCE PACKAGE, BLACKBIRD | 1996 | GM sourced |
| B50 | Covering Floor Mat, FRT & Rr, Aux - Deluxe | — | Reference |
| B51 | P, RKR, R, MOLDING ROCKER, EXTRA WIDE this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| B52 | P, RKR, R, MOLDING ROCKER, BLACK | 1998 | Provisional |
| B53 | P, FMF, R, COVERING FRT, FLOOR MATS, CARPETED INSERT DELUXE | 1988 | GM sourced |
| B54 | P, FMR, R, COVERING REAR, FLOOR MATS, CARPETED INSERT DELUXE | 1990 | GM sourced |
| B55 | P, SALES PACKAGE, EXTERIOR PACKAGE | 1998 | Provisional |
| B56 | P, RKR, R, MOLDING ROCKER, BODY COLOR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B57 | P, ORNAMENTATION, EXTR, DELUXE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| B58 | Floor mats, color-keyed carpeted first and second row this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| B59 | Remote Start Package | 2026 | GM sourced |
| B5A | Package - 'indy Coupe' | — | Reference |
| B5C | P, FLEET PROGRAM, SOUTH FLORIDA PROJECT OPTION | 1998 | Provisional |
| B5D | P, BSM, R, MOLDING B/S, SILVER, 20610 E 5 | — | Provisional |
| B5F | P, FIN, R, FLEET INCENTIVE, LOCKHEED MARTIN CORP (B/C/F/G/H/J/K/N/U/W-TRK CKLMGPST), 10330 | — | Provisional |
| B5G | P, CREDIT, REAR WINDOW DEFOGGER | 1990 | Provisional |
| B5H | P, FIN, R, FLEET INCENTIVE, EASTMAN KODAK (C/J/K/N/U/W-TRK CKGJMLPST), 11023 P 1 | — | Provisional |
| B5I | Package - 'indy Gt' | — | Reference |
| B5J | P, FIN, R, FLEET INCENTIVE, CHICAGO & NORTHEAST ILL. DISTRICT OF CARPENTERS (W-TRK ST), 11026 this code has more than one documented meaning — filter by year | — | GM sourced |
| B5K | P, LABEL, LIMITED, VEHICLE WEIGHT & DIMENSIONS, 1025 | — | Provisional |
| B5L | Sport Wheel Package | — | Reference |
| B5M | P, FIN, R, FLEET INCENTIVE, GALLO WINE (C/F/G/H/J/M/N/S/U/W-TRK CKGMLST), 10820 P 1 | — | Provisional |
| B5N | Covering Floor Mat, FRT & Rr, Rubber this code has more than one documented meaning — filter by year | — | Reference |
| B5P | Stripe Components,side Lower(canadian Chevette) | — | Reference |
| B5Q | Emission System,california Back-up | — | Reference |
| B5R | Molding B/s Black, Extra Wide | — | Reference |
| B5S | Seat,front Split,lumbar | — | Reference |
| B5T | Covering Floor Vinyl, FRT & Rr, Ful Width (seo) | — | Reference |
| B5X | P, FIN, R, FLEET INCENTIVE, ARAMARK (B/C/D/E/G/H/J/K/L/N/S/U/V/W-TRK CKGMLPST), 20820 P 1 | — | Provisional |
| B5Y | Cluster,electronic(back-up System) | — | Reference |
| B5Z | P, SALES, EXTR APPEARANCE this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| B60 | P, FLOOR, SLIDING | 1999 | Provisional |
| B61 | P, TEST, ALDL, SAUDI ARABIA | 1995 | Provisional |
| B62 | P, TEST, ALDL, JAPAN this code has more than one documented meaning — filter by year | 1995 | Provisional |
| B63 | P, TEST, ALDL, EUROPE | 1995 | Provisional |
| B64 | P, TEST, ALDL, MEXICO | 1995 | Provisional |
| B65 | P, COVERING, FLOOR SIDEWALL, REAR COMPARTMENT | 1997 | GM sourced |
| B66 | P, TRAY, PASS SIDE DEPOSIT | 1997 | Provisional |
| B67 | P, CONTAINER, RADIO CASSETTE TAPES this code has more than one documented meaning — filter by year | 1984 | 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.