← 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 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 |
|---|---|---|---|
| 55P | P, WHC, R, WHEEL COLOR, LT AUTUMWOOD MET (94) this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| 55Q | P, MCI, R, MOLDING COLOR, LT AUTUMNWOOD MET (95) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 55T | P, VRC, R, TOP COLOR, LT CANYON YELLOW (92) this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| 55U | P, CCU, M, PRIMARY COLOR, EXTERIOR, LT AUTUMNWOOD MET (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 55X | P, TLV, R, TRIM COLOR SEAT, COLOR BRILLIANT BLUE (OPEL), 10917 E, 0 | — | Provisional |
| 55Y | P, TDP, R, TRIM COLOR DR PANEL, BRILLIANT BLUE (OPEL), 10917 E, 0 | — | Provisional |
| 562 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (2) (96) | 1997 | Provisional |
| 563 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (3) (96) | 1997 | Provisional |
| 564 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (4) (96) | 1998 | Provisional |
| 566 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (6) (96) | 1997 | Provisional |
| 567 | P, TRM, M, TRIM COMBINATION, LEATHER, MED DK NEUTRAL/EBONY (7) (01), 628 | — | Provisional |
| 569 | P, BLT, M, SEAT BELT COLOR, PLATINUM (02) (OPEL), 20326 E, 0 | — | Provisional |
| 56A | P, STC, R, STRIPE COLOR, ACCENT, MED AGATE (98) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 56B | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (B) (96) | 1993 | GM sourced |
| 56C | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (C) (96) | 1995 | GM sourced |
| 56D | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (D) (96) | 1998 | GM sourced |
| 56E | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (E) (96) | 1995 | GM sourced |
| 56G | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (G) (96) | 1998 | GM sourced |
| 56I | P, CCM, M, INTERIOR TRIM, MED NEUTRAL II (96) | 1993 | GM sourced |
| 56L | P, CCL, R, SECONDARY COLOR, EXTERIOR, SPINEL RED MICA, OPEL (99) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 56Q | P, MCI, R, MOLDING COLOR, ALABASTER (95) | 1992 | GM sourced |
| 56T | P, VRC, R, TOP COLOR, MED DK NEUTRAL (96) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 56U | P, CCU, M, PRIMARY COLOR, EXTERIOR, JASPER GREEN (02), 20419 E, 1 this code has more than one documented meaning — filter by year | — | GM sourced |
| 57A | P, STC, R, STRIPE COLOR, ACCENT, DK TEAL (96) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 57B | P, TRM, M, TRIM COMBINATION, CLOTH, NEVIS DK GRAY (B) (FRONTERA) | 1997 | Provisional |
| 57F | P, FMT, R, COVERING COLOR, FLOOR MAT, BEIGE (97) | 1996 | Provisional |
| 57I | P, CCM, M, INTERIOR TRIM, NEVIS DK GRAY (98) (FRONTERA) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 57L | P, CCL, R, SECONDARY COLOR, EXTERIOR, PINEAPPLE YELLOW (OPEL) (99) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 57N | Wheels, 18 inch x 8.5 inch machined aluminum with dark painted pockets | 2026 | GM sourced |
| 57P | P, WHC, R, WHEEL COLOR, BEIGE MET (92) this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| 57Q | P, MCI, R, MOLDING COLOR, FOREST GREEN MET (98) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 57R | Wheels, 18 inch x 8.5 inch Painted aluminum with dark painted pockets | 2026 | GM sourced |
| 57T | P, VRC, R, TOP COLOR, BROWN, DK (96) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 57U | P, CCU, M, PRIMARY COLOR, EXTERIOR, FOREST GREEN MET (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 582 | P, TRM, M, TRIM COMBINATION, LT NEUTRAL / MED DK NEUTRAL (2) (02) | 1999 | GM sourced |
| 58A | P, STC, R, STRIPE COLOR, ACCENT, LT CRYSTAL GREEN (96) | 1994 | GM sourced |
| 58B | P, TRM, M, TRIM COMBINATION, LT NEUTRAL / MED DK NEUTRAL (B) (02) | 1999 | GM sourced |
| 58C | P, TRM, M, TRIM COMBINATION, LT NEUTRAL / MED DK NEUTRAL (C) (02) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 58D | P, TRM, M, TRIM COMBINATION, LT NEUTRAL / MED DK NEUTRAL (D) (02) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 58I | P, CCM, M, INTERIOR TRIM, LT NEUTRAL / MED DK NEUTRAL (02) | 1999 | GM sourced |
| 58L | P, CCL, R, SECONDARY COLOR, EXTERIOR, SANDALWOOD MET (02) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 58T | Vinyl Top Color,light Chestnut Metallic | — | Reference |
| 58U | P, CCU, M, PRIMARY COLOR, EXTERIOR, SANDALWOOD MET (02) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 592 | P, TRM, M, TRIM COMBINATION, LEATHER, LT NEUTRAL (2) (04), 20730 E, 1 | — | Provisional |
| 593 | P, TRM, M, TRIM COMBINATION, LEATHER, LT NEUTRAL (3) (04), 20730 E, 1 | — | Provisional |
| 59A | P, STC, R, STRIPE COLOR, ACCENT, TWO TONE, WHITE/BEIGE (93) this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| 59B | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (B) (04), 20730 E, 1 | — | Provisional |
| 59C | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (C) (04), 20730 E, 1 | — | Provisional |
| 59D | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (D) (04), 20927 E, 1 | — | GM sourced |
| 59I | P, CCM, M, INTERIOR TRIM, LARK YELLOW (I) (98) | 1996 | GM sourced |
| 59L | P, CCL, R, SECONDARY COLOR, EXTERIOR, BRONZE MET (98) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 59Q | P, MCI, R, MOLDING COLOR, RED MAPLE MET (96) this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 59T | P, VRC, R, TOP COLOR, BRONZE MET (93) | 1991 | GM sourced |
| 59U | P, CCU, M, PRIMARY COLOR, EXTERIOR, BRONZE MET (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 5A0 | C, GRL, R, GRILLE, BLACK, GLOSS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5A1 | C, AIL, R, PANEL LEFT, ADSCO (#7280-20-1) this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5A2 | C, AIR, R, PANEL RIGHT, ADSCO #7280-45-1 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5A3 | C, AIL, R, PANEL LEFT, INTERIOR, PARTITION, TOP SCREEN, ADSCO #7280-23-1 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5A4 | C, AIR, R, PANEL RIGHT, INTERIOR PARTITION, ADSCO #7280-46-1 this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 5A5 | C, RAD, R, RADIATOR, HEAVY DUTY, COOLING MANUAL TRANS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5A6 | C, RAD, R, RADIATOR, HEAVY DUTY, COOLING AUTO TRANS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5A7 | C, WHS, R, WHEEL SPARE, - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5A8 | C, RAD, R, RADIATOR, HEAVY DUTY, WITH HPOC TRANS OIL COOLER this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5AA | Knob Mahogany | — | Reference |
| 5AB | Knob Figured Sapele | — | Reference |
| 5AC | Knob Pannel, Suede | — | Reference |
| 5AD | Knob Choco Sapele | — | Reference |
| 5AE | Knob Saddle Olive Ash | — | Reference |
| 5AF | Knob Black Olive Ash | — | Reference |
| 5AG | Knob Sapele | — | Reference |
| 5AH | Knob Sapele Midnight | — | Reference |
| 5AJ | Accessory Charging Cord - 230v | — | Reference |
| 5AK | Accessory Wheel Inserts - Design 4 | — | Reference |
| 5AL | Accessory Wheel Inserts - Design 1 | — | Reference |
| 5AM | Accessory Charge Cord Set Mode2 Charging - Cee 7/7 TO Type 1 Veh Conn | — | Reference |
| 5AN | Tire All-p225/70hr | — | Reference |
| 5AO | Accessory Charge Cord Set Mode2 Charging - Nema 5 TO Type 1 Veh Conn | — | Reference |
| 5AQ | Accessory Charge Cord Set - Australia / NZ this code has more than one documented meaning — filter by year | — | Reference |
| 5AU | P, CCU, M, PRIMARY COLOR, EXTERIOR, CAPE BLUE (01) HOLDEN, 20424 E, 8 | — | Provisional |
| 5AZ | Accessory Safety Kit - Universal | — | Reference |
| 5B0 | C, WINDOW, SWINGOUT, BODY LH FRT (SEO) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 5B1 | C, AIC, R, PANEL CENTER, FIXED INTERIOR, PARTITION, TOP SCREEN, ADSCO, #7280-51-1 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5B2 | C, AIC, R, PANEL CENTER, PARTITION PANEL (FIXED) #7280-51-1 - NOTE-WITH TOPSCREEN this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5B3 | C, AIC, R, PANEL CENTER, INTERIOR, PARTITION, ADSCO #7280-52-1 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5B5 | C, WINDOW, POWER OPERATED, SIDE (SEO) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 5B7 | C, AIC, R, PANEL CENTER, INTERIOR, PARTITION, HINGED, ADSCO #7280-54 this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5B8 | C, AIC, R, PANEL CENTER, INTERIOR, PARTITION, HINGED, ADSCO #7280-55 this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 5BA | Accessory Wheel - 17' X 6.5 - J - Aluminum - Design 1 | — | Reference |
| 5BB | Accessory Wheel - 17' X 6.5 - J - Aluminum - Design 2 | — | Reference |
| 5BC | Accessory Wheel - 17' X 6.5 - J - Aluminum - Design 3 | — | Reference |
| 5BD | Accessory Wheel - 17' X 6.5 - J - Aluminum - Design 4 | — | Reference |
| 5BJ | Accessory Camera - Rear Vision W/isrv Mirror Display | — | Reference |
| 5BL | C, TIR, M, TIRE ALL, LT265/75R16/D RWL R/PE ST TL AT (120Q) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5BM | C, TIR, M, TIRE ALL, LT245/75R16/E RWL R/PE ST TL AT 120Q this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 5BN | C, TIR, M, TIRE ALL, LT245/75R16/C BW R/PE ST TL OOR (SEO), 928 | — | GM sourced |
| 5BS | Knob Raven Sapele | — | Reference |
| 5BU | P, CCU, M, PRIMARY COLOR, EXTERIOR, GLACIER BLUE MET (ISUZU) (03), 20424 E, 8 | — | Provisional |
| 5BX | Accessory Roof Panel Kit - Carbon Fiber, Clear Coat | — | Reference |
| 5BY | Accessory Tire - 245/35r20 XL 95y Hw4 BW Hwy | — | Reference |
| 5C1 | C, PANEL, LH, PLEXIGLASS, ADSCO #5226-2 this code has more than one documented meaning — filter by year | 1991 | 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.