← 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 201–300 of 589 codes beginning with 5. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| 5C2 | C, PANEL, CTR, PLEXIGLASS, ADSCO #5226-2 this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5C3 | C, PANEL, RH, PLEXIGLASS, ADSCO #5226-2 this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5C4 | Spring Front Suspension, Computer Selected, Upgrade (seo) | — | Reference |
| 5C5 | Sunshade Vinyl (seo) | — | Reference |
| 5C6 | P, HOOK, CARGO TIE-DN | 1998 | GM sourced |
| 5C7 | C, HOOK, CARGO TIE-DN, BODY - 10 FT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5C8 | C, HOOK, CARGO TIE-DN, BODY - 12 FT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5C9 | C, HOOK, CARGO TIE-DN, BODY - 14 FT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5CE | Tire All P205/75r15/n BL R/pe ST TL Als | — | Reference |
| 5CG | Tire All P205/75r15/n Ws2 R/pe ST TL Als (seo) | — | Reference |
| 5CS | Knob Suede | — | Reference |
| 5CU | P, TIR, M, TIRE ALL, P215/75R15/N BW R/PE ST TL ALS this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| 5D0 | P, PAINT PROCESS, BUMPER, LT GRAY WE5625 | 1998 | GM sourced |
| 5D1 | C, PAINT PROCESS, BUMPER, GRAY this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| 5D2 | C, COOLING SYSTEM, ENGINE OIL AUX this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5D3 | Calibration Extended Battery Run Down, Inadverent Power Delay | — | Reference |
| 5D4 | C, COOLING SYSTEM, HEAVY DUTY, EXPORT (SEO) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5D5 | C, FAN, RADIATOR BOOSTER (SEO) this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 5D6 | C, GRL, R, GRILLE, CHROME, RADIATOR (SEO) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5D7 | C, PAINT PROCESS, BUMPER, FRT, FINISH PAINT - DELETE | 1998 | GM sourced |
| 5D8 | C, PAINT PROCESS, BUMPER, FRT, SPECIAL this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5D9 | C, PAINT PROCESS, BUMPER, RR, SPECIAL this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5DU | P, CCU, M, PRIMARY COLOR, EXTERIOR, LT QUARTZ GRAY MET (ISUZU) (03), 20424 E, 8 | — | Provisional |
| 5E1 | C, TIRES, CUSTOMER PROPERTY, FRT-PENSKE/RYDER | 1998 | GM sourced |
| 5E2 | C, TIRES, CUSTOMER PROPERTY, RR-PENSKE/RYDER | 1998 | GM sourced |
| 5E3 | C, SEAT OVERRIDE, VINYL TO CLOTH TRIM, 11105 | — | Provisional |
| 5E4 | P, EQUIPMENT, DRIVELINE HEIGHT SPECIAL | 1998 | GM sourced |
| 5E5 | C, EQUIPMENT, ENGINE, FLEXIBLE FUEL (GAS/ALC), 5.3L, V8, 10928 | — | Provisional |
| 5E6 | C, PLATE, ABS NAME | 1993 | GM sourced |
| 5E7 | C, CHASSIS EQUIPMENT, 71 IN FRT OVERHANG | 1998 | GM sourced |
| 5E8 | C, VEM, R, MARKING, REFLECTIVE BLACK, DEPARTMENT OF DEFENSE | 1990 | GM sourced |
| 5E9 | C, VEM, R, MARKING, REFLECTIVE YELLOW ON BLUE, U.S. AIR FORCE | 1990 | GM sourced |
| 5EA | Equipment Package, Co2- Reduction | — | Reference |
| 5EB | Tire All P235/75r15/n Wol R/pe ST TL Oor | — | Reference |
| 5EH | Tire All Lt215/75r15/c BW PE ST TL Als | — | Reference |
| 5EU | P, CCU, M, PRIMARY COLOR, EXTERIOR, SANDALWOOD MET (HOLDEN) (02), 20424 E, 8 | — | Provisional |
| 5F0 | C, PIPE, FUEL TANK FILL - UNRESTRICTED, (SEO) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5F1 | C, PLUG, TRANSMISSION, DRAIN this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5F2 | Calibration Suppression, Eng Oil Change Ind | — | Reference |
| 5F3 | Package Enjoy+ | — | Reference |
| 5F4 | Identification Biodiesel B20 Fuel, Vehicle this code has more than one documented meaning — filter by year | — | Reference |
| 5F5 | C, DECAL, ADSCO-WEST ELECTRIC STRIPING, (5858/5859) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5F6 | C, LEVER, PARKING BRAKE, ORSCHELIN this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| 5F7 | C, VEM, R, MARKING, RED ON REFLECTIVE WHITE, U.S. AIR FORCE this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| 5F8 | C, RSP, M, SPRING REAR, 10,500 LBS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5FD | 24 inch Bright alloy wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| 5FE | 24 inch Black alloy wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| 5FF | 24 inch Bright Chrome PVD wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| 5FG | 24 inch Black wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| 5FL | Tire All P235/75r15/n BW R/pe ST TL Als | — | Reference |
| 5FU | P, CCU, M, PRIMARY COLOR, EXTERIOR, CHAMONIX GREEN MET (ISUZU) (03), 20424 E, 8 | — | Provisional |
| 5G0 | C, WHC, R, WHEEL COLOR, BLACK (SEO) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 5G1 | C, TRIM OVERRIDE, CARPETING this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5G2 | C, WHC, R, WHEEL COLOR, WHITE (SEO) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5G3 | C, PROVISIONS, TRANSMISSION, SPECIAL this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| 5G4 | C, PROVISIONS, LAMP, ROOF MOUNTED (SEO) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 5G5 | C, TRIM OVERRIDE, HEADLINER this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5G6 | C, TRIM OVERRIDE, COVERING, SPARE TIRE this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5G7 | C, PROVISIONS, TRANSMISSION OVERDRIVE (50 MPH) UPSHIFT this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 5G8 | Calibration - Activation 'on' | — | Reference |
| 5G9 | C, PROVISION OPTIONS, COLD WEATHER (SEO) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5GA | C, TIR, M, TIRE ALL, P245/75R16-109S BW R/PE ST TL AT (SEO) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5GL | Tire All 275/40 R20 106y TL BW Hw4 | — | Reference |
| 5GN | Tire All 215/55r17 SL 94v BW Als | — | Reference |
| 5GU | P, CCU, M, PRIMARY COLOR, EXTERIOR, FOXFIRE RED (HOLDEN) (01), 20424 E, 8 | — | Provisional |
| 5H0 | C, PROVISION OPTIONS, CLEAN POWER SOURCE FOR HAND HELD COMPUTER this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 5H1 | KEY ADDITIONAL this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| 5H2 | C, LAMP, CARGO, ADSCO (SEARS ROEBUCK #7799) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5H3 | C, LAMP, CARGO, ADSCO (SEARS ROEBUCK #7798) (2) this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5H4 | C, WIRING PROVISIONS, HEAVY GAGE, EXTENDED this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5H5 | C, WINDOW, SCREEN, SI CARGO DR (SEARS-ROEBUCK #7797) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5H6 | C, WINDOW, SCREEN, RR DR (SEARS-ROEBUCK #7795) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5H7 | C, VEM, R, MARKING, REFLECTIVE WHITE, ARMY NATIONAL GUARD | 1989 | GM sourced |
| 5H8 | C, IDK, R, CYLINDER UNIT, SINGLE KEY SYSTEM, KEYED ALIKE this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5H9 | C, PLUG, RR AXLE, DRAIN this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5HB | Ornamentation Lettering, 'advantage' | — | Reference |
| 5HC | Ornamentation Extr, Mldg, Bumper Rr, Chrome | — | Reference |
| 5HG | Tire All P185/70r14 SL 88h BW Hwy | — | Reference |
| 5HH | Tire All 185/65r15 SL 88h BW Hwy | — | Reference |
| 5HL | Tire All 195/55r16 SL 87h BW Hwy | — | Reference |
| 5HP | KEYS - 6 additional, keys are not programmed to vehicle | 2020 | GM sourced |
| 5HY | Package Hybrid Option (6) | — | Reference |
| 5I0 | Color Special Paint #27 | — | Reference |
| 5I1 | Color Special Paint #28 | — | Reference |
| 5I2 | Color Special Paint #29 | — | Reference |
| 5I3 | Color Special Paint #30 | — | Reference |
| 5I4 | Color Special Paint #31 | — | Reference |
| 5I5 | Color Special Paint #32 | — | Reference |
| 5I6 | Color Special Paint #33 | — | Reference |
| 5I7 | Color Special Paint #34 | — | Reference |
| 5I8 | Color Special Paint #35 | — | Reference |
| 5I9 | Color Special Paint #36 | — | Reference |
| 5IA | Color Special Paint #1 | — | Reference |
| 5IB | Color Special Paint #2 | — | Reference |
| 5IC | Color Special Paint #3 | — | Reference |
| 5ID | Color Special Paint #4 | — | Reference |
| 5IE | Color Special Paint #5 | — | Reference |
| 5IF | Color Special Paint #6 | — | Reference |
| 5IG | Color Special Paint #7 | — | Reference |
| 5IH | Color Special Paint #8 | — | 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.