← 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 1–100 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 |
|---|---|---|---|
| 502 | P, TRM, M, TRIM COMBINATION, LEATHER, LT WHEAT (2) (99) | 1996 | Provisional |
| 503 | P, TRM, M, TRIM COMBINATION, LEATHER, MILLE MIGLIA RED (3) (00) | 1997 | GM sourced |
| 504 | P, TRM, M, TRIM COMBINATION, LEATHER, LT WHEAT (4) (99) | 1996 | GM sourced |
| 505 | P, TRM, M, TRIM COMBINATION, LEATHER, LT WHEAT (5) (99) | 1996 | GM sourced |
| 506 | P, TRM, M, TRIM COMBINATION, LEATHER, LT WHEAT (6) (99) | 1996 | GM sourced |
| 509 | SEAT BELT, COLOR LT YELLOW (9) (91) | — | Provisional |
| 50A | P, STC, R, STRIPE COLOR, ACCENT, STONEBEIGE (97) this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 50D | P, TRM, M, TRIM COMBINATION, CLOTH, MED WHEAT (D) (03), 622 | — | GM sourced |
| 50F | Floor Mat Color,dark Yellow | — | Reference |
| 50I | P, CCM, M, INTERIOR TRIM, MED WHEAT (99) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 50K | Color Combination Aux Top, White | — | Reference |
| 50L | P, CCL, R, SECONDARY COLOR, EXTERIOR, PEARLCOLOR RED MICA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 50P | Wheel Color,white | — | Reference |
| 50Q | P, MCI, R, MOLDING COLOR, OLYMPIC WHITE (03), 10906 this code has more than one documented meaning — filter by year | — | GM sourced |
| 50T | Vinyl Top Color,flax | — | Reference |
| 50U | P, CCU, M, PRIMARY COLOR, EXTERIOR, OLYMPIC WHITE (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 50X | P, TLV, R, TRIM COLOR SEAT, COLOR YELLOW (OPEL) | 1999 | Provisional |
| 50Y | P, TDP, R, TRIM COLOR DR PANEL, YELLOW (OPEL), 10427 E, 0 | — | Provisional |
| 512 | P, TRM, M, TRIM COMBINATION, LEATHER, TOREADOR RED (2) (97) | 1995 | Provisional |
| 513 | P, TRM, M, TRIM COMBINATION, LEATHER, TOREADOR RED (3) (97) | 1995 | Provisional |
| 514 | P, TRM, M, TRIM COMBINATION, LEATHER, TOREADOR RED (4) (97) | 1994 | Provisional |
| 51A | P, STC, R, STRIPE COLOR, ACCENT, TWO TONE, GRAY/SILVER (92) this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 51B | P, TRM, M, TRIM COMBINATION, CLOTH, TOREADOR RED (97) | 1995 | GM sourced |
| 51C | P, TRM, M, TRIM COMBINATION, CLOTH, TOREADOR RED (C) (97) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 51D | P, TRM, M, TRIM COMBINATION, CLOTH, TOREADOR RED (D) (97) | 1995 | GM sourced |
| 51E | P, TRM, M, TRIM COMBINATION, CLOTH, TOREADOR RED (E) (97) | 1997 | Provisional |
| 51G | P, TRM, M, TRIM COMBINATION, CLOTH, TOREADOR RED (G) (97) | 1997 | GM sourced |
| 51I | P, CCM, M, INTERIOR TRIM, TOREADOR RED (97) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 51L | P, CCL, R, SECONDARY COLOR, EXTERIOR, SUNFLOWER MET OPEL (99) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 51N | P, TRM, M, TRIM COMBINATION, VINYL, TOREADOR RED (N) (97) | 1998 | Provisional |
| 51Q | P, MCI, R, MOLDING COLOR, TOREADOR RED MET (97) | 1995 | GM sourced |
| 51T | P, VRC, R, TOP COLOR, DK TOREADOR (97) | 1995 | GM sourced |
| 51U | P, CCU, M, PRIMARY COLOR, EXTERIOR, TOREADOR RED MET (02), 20419 E, 1 this code has more than one documented meaning — filter by year | — | GM sourced |
| 522 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (2) (98) | 1995 | GM sourced |
| 523 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (2) (97) | 1996 | GM sourced |
| 524 | P, TRM, M, TRIM COMBINATION, LEATHER, LT NEUTRAL (4) (96) | 1996 | GM sourced |
| 525 | P, TRM, M, TRIM COMBINATION, LEATHER, LT NEUTRAL (5) (96) | 1996 | GM sourced |
| 526 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II (96) | 1993 | GM sourced |
| 528 | P, TRM, M, TRIM COMBINATION, LEATHER, MED NEUTRAL II, 301 E, 1 | — | Provisional |
| 529 | SEAT BELT COLOR, LT NEUTRAL (9) (92) | — | Provisional |
| 52A | P, STC, R, STRIPE COLOR, ACCENT, AUTUMN MAPLE (94) this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 52B | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (B) (98) | 1995 | GM sourced |
| 52C | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (C) (01) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 52D | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (D) (98) | 1995 | GM sourced |
| 52E | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (E) (96) | 1993 | GM sourced |
| 52F | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (F) (03), 10829 this code has more than one documented meaning — filter by year | — | GM sourced |
| 52G | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (G) (96) | 1996 | GM sourced |
| 52H | P, TRM, M, TRIM COMBINATION, CLOTH, MED NEUTRAL II (H) (96) this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 52I | P, CCM, M, INTERIOR TRIM, LT NEUTRAL (I) (96) | 1996 | GM sourced |
| 52J | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (J) (00) | 1998 | GM sourced |
| 52K | P, TRM, M, TRIM COMBINATION, CLOTH, LT NEUTRAL (K) (00) | 1997 | Provisional |
| 52L | P, CCL, R, SECONDARY COLOR, EXTERIOR, GRIS YELLOW (BRAZIL) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 52N | P, TRM, M, TRIM COMBINATION, VINYL, LT NEUTRAL (N) (96) | 1993 | GM sourced |
| 52P | P, WHC, R, WHEEL COLOR, GOLD MET (96) | 1998 | GM sourced |
| 52Q | P, MCI, R, MOLDING COLOR, AUBURN NIGHTMIST MT (99) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 52T | P, VRC, R, TOP COLOR, NEUTRAL | 1997 | GM sourced |
| 52U | P, CCU, M, PRIMARY COLOR, EXTERIOR, MAYAN GOLD (02), 615 this code has more than one documented meaning — filter by year | — | GM sourced |
| 52V | P, TRM, M, TRIM COMBINATION, VINYL, MED NEUTRAL II (V) (01) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 52W | P, TRM, M, TRIM COMBINATION, VINYL, LT NEUTRAL (W) (96) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 52X | P, TLV, R, TRIM COLOR SEAT, COLOR PANORAMA BLUE (OPEL), 20320 E, 0 | — | Provisional |
| 52Y | P, TDP, R, TRIM COLOR DR PANEL, PANORAMA BLUE (OPEL), 20321 E, 0 | — | Provisional |
| 532 | P, TRM, M, TRIM COMBINATION, LEATHER, HYPER YELLOW (2) (02) (HOLDENS), 309 E, 8 | — | Provisional |
| 533 | P, TRM, M, TRIM COMBINATION, LEATHER, COMPETITION YELLOW (3) (94) | 1991 | Provisional |
| 53A | P, STC, R, STRIPE COLOR, ACCENT, MED GOLD DUST (98) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 53B | P, TRM, M, TRIM COMBINATION, CLOTH, ROMA DK GRAY (B) (FRONTERA) | 1997 | GM sourced |
| 53F | Steering Wheel Color Pannel, Suede | — | Reference |
| 53I | P, CCM, M, INTERIOR TRIM, ROMA DK GRAY (98) (FRONTERA) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 53L | P, CCL, R, SECONDARY COLOR, EXTERIOR, BROCADE YELLOW MET (99) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 53Q | P, MCI, R, MOLDING COLOR, LT TOREADOR RED MET (97) this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| 53S | Steering Wheel Color Suede | — | Reference |
| 53T | P, VRC, R, TOP COLOR, LT TORREADOR (97) | 1994 | Provisional |
| 53U | P, CCU, M, PRIMARY COLOR, EXTERIOR, BROCADE YELLOW MET (02), 20419 E, 0 this code has more than one documented meaning — filter by year | — | GM sourced |
| 53X | P, TLV, R, TRIM COLOR SEAT, COLOR SIGNAL RED (OPEL), 20410 E, 0 | — | Provisional |
| 53Y | P, TDP, R, TRIM COLOR DR PANEL, SIGNAL RED (OPEL), 20410 E, 0 | — | Provisional |
| 542 | P, TRM, M, TRIM COMBINATION, LEATHER, TAUPE (2) (94) | 1993 | GM sourced |
| 543 | P, TRM, M, TRIM COMBINATION, LEATHER, TAUPE (3) (92) | 1989 | GM sourced |
| 544 | P, TRM, M, TRIM COMBINATION, LEATHER, TAUPE (4) (92) | 1989 | GM sourced |
| 545 | P, TRM, M, TRIM COMBINATION, LEATHER, TAUPE (5) (92) | 1989 | GM sourced |
| 546 | TRIM COMBINATION, LEATHER, TAUPE (6) (92) | — | Provisional |
| 549 | SEAT BELT COLOR, TAUPE (9) (92) | — | Provisional |
| 54A | P, STC, R, STRIPE COLOR, ACCENT, MED GOLD (00) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 54B | P, TRM, M, TRIM COMBINATION, CLOTH, TAUPE (B) (92) | 1989 | GM sourced |
| 54D | P, TRM, M, TRIM COMBINATION, CLOTH, TAUPE (D) (96) | 1996 | GM sourced |
| 54F | P, FMT, R, COVERING COLOR, FLOOR MAT, TAUPE (96) | 1996 | GM sourced |
| 54G | P, TRM, M, TRIM COMBINATION, CLOTH, TAUPE (G) (96) | 1996 | GM sourced |
| 54I | P, CCM, M, INTERIOR TRIM, TAN (I) (FRONTERA 98) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 54L | P, CCL, R, SECONDARY COLOR, EXTERIOR, MOONLAND, MET 2 (OPEL) (01) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 54Q | P, MCI, R, MOLDING COLOR, SUNFIRE YELLOW (93) this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| 54T | P, VRC, R, TOP COLOR, MED NEUTRAL, 801 E, 1 | — | GM sourced |
| 54U | P, CCU, M, PRIMARY COLOR, EXTERIOR, SUNFIRE YELLOW (02), 20419 E, 1 this code has more than one documented meaning — filter by year | — | GM sourced |
| 54X | P, TLV, R, TRIM COLOR SEAT, COLOR SPEARMINT SILVER (OPEL), 20320 E, 0 | — | Provisional |
| 54Y | P, TDP, R, TRIM COLOR DR PANEL, SPEARMINT SILVER (OPEL), 20321 E, 0 | — | Provisional |
| 553 | P, TRM, M, TRIM COMBINATION, LEATHER, MUSHROOM (3) (94) | 1991 | Provisional |
| 554 | P, TRM, M, TRIM COMBINATION, LEATHER, MUSHROOM (4) (94) | 1991 | Provisional |
| 55A | P, STC, R, STRIPE COLOR, ACCENT, MED AUTUMNWOOD MET (94) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 55B | Accessory Wheel-16 X 6.0 - J - Alloy - Design 1 | — | Reference |
| 55E | P, TRM, M, TRIM COMBINATION, CLOTH, MUSHROOM (E) (94) | 1991 | GM sourced |
| 55G | P, TRM, M, TRIM COMBINATION, CLOTH, MUSHROOM (G) (94) | 1991 | GM sourced |
| 55I | P, CCM, M, INTERIOR TRIM, MED LT MUSHROOM (94) this code has more than one documented meaning — filter by year | 1991 | Provisional |
| 55L | P, CCL, R, SECONDARY COLOR, EXTERIOR, POST YELLOW (99) this code has more than one documented meaning — filter by year | 1998 | 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.