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| 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 471 codes beginning with 1. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| 14T | P, VRC, R, TOP COLOR, LT GRAY MET (92) | 1990 | GM sourced |
| 14U | P, CCU, M, PRIMARY COLOR, EXTERIOR, LT GRAY MET (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 14V | P, TRM, M, TRIM COMBINATION, VINYL, LT GRAY (V) (93) | 1992 | GM sourced |
| 14W | P, TRM, M, TRIM COMBINATION, VINYL, GRAY | 1996 | Provisional |
| 150 | TRIM COMBINATION, LEATHER, MED SLATE GRAY (2) | — | Provisional |
| 152 | P, TRM, M, TRIM COMBINATION, LEATHER, SHALE (2) (95). | 1993 | Provisional |
| 153 | P, TRM, M, TRIM COMBINATION, LEATHER, SHALE (3) (96). | 1995 | Provisional |
| 154 | P, TRM, M, TRIM COMBINATION, CLOTH, SHALE/NEUTRAL (4) (97) | 1994 | GM sourced |
| 155 | P, TRM, M, TRIM COMBINATION, CLOTH, SHALE/NEUTRAL (5) (97) | 1994 | GM sourced |
| 156 | P, TRM, M, TRIM COMBINATION, LEATHER, SHALE/NEUTRAL (6) (97) | 1995 | GM sourced |
| 159 | SEAT BELT COLOR, MED SLATE GRAY (91) | — | Provisional |
| 15A | P, STC, R, STRIPE COLOR, ACCENT, TWO TONE, TEAL/SILVER (93) this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| 15B | P, TRM, M, TRIM COMBINATION, CLOTH, SHALE (B) (95) this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| 15C | P, TRM, M, TRIM COMBINATION, CLOTH, GRAY MONTANA (C) (97) | 1996 | GM sourced |
| 15D | P, TRM, M, TRIM COMBINATION, CLOTH, GRAY MONTANA (D) (97) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 15E | P, TRM, M, TRIM COMBINATION, CLOTH, GRAY MONTANA (E) (97) | 1996 | GM sourced |
| 15F | P, FMT, R, COVERING COLOR, FLOOR MAT, SHALE (95) this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| 15G | P, TRM, M, TRIM COMBINATION, CLOTH, GRAY MONTANA (G) (97) | 1996 | GM sourced |
| 15H | Trim Combination,cloth,medium Slate Gray | — | Reference |
| 15I | P, CCM, M, INTERIOR TRIM, SHALE (I) (95) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 15J | Trim Combination,cloth,medium Slate Gray | — | Reference |
| 15L | P, CCL, R, SECONDARY COLOR, EXTERIOR, GRANITE MET (02) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 15P | P, WHC, R, WHEEL COLOR, SILVER (96) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 15Q | P, MCI, R, MOLDING COLOR, ASTRAL SILVER (95) this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| 15U | P, CCU, M, PRIMARY COLOR, EXTERIOR, MED GRAY MET (02), 20419 E, 6 this code has more than one documented meaning — filter by year | — | GM sourced |
| 161 | SECONDARY COLOR, EXTERIOR, WARM GRAY MET (91) | — | Provisional |
| 162 | P, TRM, M, TRIM COMBINATION, LEATHER, CAPPUCCINO CREAM (2) (96) | 1996 | Provisional |
| 163 | P, TRM, M, TRIM COMBINATION, LEATHER, CAPPUCCINO CREAM (3) (96) | 1995 | Provisional |
| 164 | P, TRM, M, TRIM COMBINATION, LEATHER, CAPPUCCINO CREAM (4) (96) | 1996 | Provisional |
| 165 | P, TRM, M, TRIM COMBINATION, LEATHER, CAPPUCCINO CREAM (5) (96) | 1996 | Provisional |
| 166 | P, TRM, M, TRIM COMBINATION, LEATHER, CAPPUCCINO CREAM (6) (97) | 1995 | Provisional |
| 16A | Stripe Color, Accent, Two Tone, Silver/teal (93) this code has more than one documented meaning — filter by year | 1992 | GM dated |
| 16B | P, TRM, M, TRIM COMBINATION, CLOTH, NEUTRAL GRAY (B) (SATURN) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16C | P, TRM, M, TRIM COMBINATION, CLOTH, NEUTRAL GRAY (C) (SATURN) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16D | P, TRM, M, TRIM COMBINATION, CLOTH, NEUTRAL GRAY (D) (SATURN) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16F | P, FMT, R, COVERING COLOR, FLOOR MAT, CAPPUCCINO CREAM (95) | 1993 | GM sourced |
| 16H | P, TRM, M, TRIM COMBINATION, CLOTH, NEUTRAL GRAY (H) (94 SATURN HOMECOMING) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16I | P, CCM, M, INTERIOR TRIM, CAPPUCCINO CREAM (I) (95) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16L | P, CCL, R, SECONDARY COLOR, EXTERIOR, PEARL SHELL (94 SATURN HOMECOMING) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 16P | P, WHC, R, WHEEL COLOR, BRIGHT WHITE (96) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 16Q | P, MCI, R, MOLDING COLOR, BRIGHT WHITE (91) | 1997 | GM sourced |
| 16S | Roof Color - Gray, Removable Panel | — | Reference |
| 16T | P, VRC, R, TOP COLOR, BRIGHT WHITE (94) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 16U | P, CCU, M, PRIMARY COLOR, EXTERIOR, BRIGHT WHITE (02), 20419 this code has more than one documented meaning — filter by year | — | GM sourced |
| 171 | SECONDARY COLOR, EXTERIOR, DK BLUE GRAY MET (92) | — | Provisional |
| 172 | P, TRM, M, TRIM COMBINATION, LEATHER, MED GRAY (2) (97) | 1995 | GM sourced |
| 173 | P, TRM, M, TRIM COMBINATION, LEATHER, MED GRAY (3) (97) | 1995 | Provisional |
| 174 | P, TRM, M, TRIM COMBINATION, LEATHER, MED GRAY (4) (97) | 1995 | Provisional |
| 176 | P, TRM, M, TRIM COMBINATION, LEATHER, MED GRAY (6) (97) | 1995 | Provisional |
| 179 | SEAT BELT, COLOR CHARCOAL (91) | — | Provisional |
| 17A | P, STC, R, STRIPE COLOR, ACCENT, SILVERMIST (99) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 17B | P, TRM, M, TRIM COMBINATION, CLOTH, MED GRAY (97) (B) this code has more than one documented meaning — filter by year | 1995 | GM sourced |
| 17C | P, TRM, M, TRIM COMBINATION, CLOTH, MED GRAY (97) (C) | 1995 | GM sourced |
| 17D | P, TRM, M, TRIM COMBINATION, CLOTH, MED GRAY (97) (D) | 1995 | GM sourced |
| 17E | P, TRM, M, TRIM COMBINATION, CLOTH, MED GRAY (97) (E) | 1995 | GM sourced |
| 17F | P, FMT, R, COVERING COLOR, FLOOR MAT, CHARCOAL (91) | 1989 | GM sourced |
| 17G | P, TRM, M, TRIM COMBINATION, CLOTH, MED GRAY (97) (G) | 1995 | GM sourced |
| 17I | P, CCM, M, INTERIOR TRIM, MED GRAY (I) (97) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 17L | P, CCL, R, SECONDARY COLOR, EXTERIOR, SILVERMIST MET (97) this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| 17N | Trim Combination,vinyl,dk Charcoal | — | Reference |
| 17P | P, WHC, R, WHEEL COLOR, SILVERMIST MET (97) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 17Q | P, MCI, R, MOLDING COLOR, SILVERMIST MT (97) | 1996 | GM sourced |
| 17R | Trim Combination,cloth,dk Charcoal | — | Reference |
| 17T | P, VRC, R, TOP COLOR, SILVERMIST (97) | 1994 | GM sourced |
| 17U | P, CCU, M, PRIMARY COLOR, EXTERIOR, SILVERMIST MET (02), 20419 E 1 this code has more than one documented meaning — filter by year | — | GM sourced |
| 17V | Trim Combination,vinyl,dk Charcoal | — | Reference |
| 17W | Trim Combination,vinyl,dk Charcoal | — | Reference |
| 17X | P, TLV, R, TRIM COLOR SEAT, CHARCOAL/CHARCOAL (OPEL), 20717 E 0 | — | Provisional |
| 17Y | P, TDP, R, TRIM COLOR DR PANEL, CHARCOAL/CHARCOAL (OPEL), 20201 E 0 | — | Provisional |
| 180 | TRIM COMBINATION, CLOTH, DK CHARCOAL (D) | — | Provisional |
| 181 | SECONDARY COLOR, EXTERIOR, ASTRAL SILVER (91) | — | Provisional |
| 182 | P, TRM, M, TRIM COMBINATION, LEATHER, DK CHARCOAL (2) (91) | 1989 | GM sourced |
| 183 | P, TRM, M, TRIM COMBINATION, LEATHER, EBONY/SHALE (3) (04)., 20819 E 1 | — | Provisional |
| 18A | P, STC, R, STRIPE COLOR, ACCENT, TWO TONE, DK AUTUMN/BEIGE (95) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 18B | P, TRM, M, TRIM COMBINATION, CLOTH, CHARCOAL this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| 18C | P, TRM, M, TRIM COMBINATION, CLOTH, DK CHARCOAL (C) (97) IBC | 1998 | GM sourced |
| 18D | P, TRM, M, TRIM COMBINATION, CLOTH, DK CHARCOAL (D) (96) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 18E | P, TRM, M, TRIM COMBINATION, CLOTH, DK CHARCOAL (E) (96) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 18H | P, TRM, M, TRIM COMBINATION, CLOTH, GRAY MACAW (00) BRAZIL | 1997 | GM sourced |
| 18I | P, CCM, M, INTERIOR TRIM, DK CHARCOAL (I) (96) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 18L | P, CCL, R, SECONDARY COLOR, EXTERIOR, BLACKSILVER (01) (SATURN) this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| 18N | Trim Combination,vinyl,charcoal | — | Reference |
| 18P | P, WHC, R, WHEEL COLOR, CHARCOAL MET (91) | 1998 | GM sourced |
| 18Q | P, MCI, R, MOLDING COLOR, PLATINUM MT (99) this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| 18R | Wheel Color,charcoal Metallic | — | Reference |
| 18T | P, VRC, R, TOP COLOR, DK GREEN GRAY MET (92) | 1990 | GM sourced |
| 18U | P, CCU, M, PRIMARY COLOR, EXTERIOR, LISZT BLACK (02) (BRAZIL), 20419 E 5 this code has more than one documented meaning — filter by year | — | GM sourced |
| 18V | Trim Combination,vinyl,charcoal | — | Reference |
| 18W | P, TRM, M, TRIM COMBINATION, VINYL, DK CHARCOAL (W) this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| 18X | P, TLV, R, TRIM COLOR SEAT, DK CHARCOAL (OPEL), 10420 E 0 | — | Provisional |
| 18Y | P, TDP, R, TRIM COLOR DR PANEL, DK CHARCOAL (OPEL), 10420 E 0 | — | Provisional |
| 192 | P, TRM, M, TRIM COMBINATION, LEATHER, EBONY (2) (00) | 1997 | GM sourced |
| 193 | P, TRM, M, TRIM COMBINATION, LEATHER, EBONY (3) (00) | 1998 | GM sourced |
| 194 | P, TRM, M, TRIM COMBINATION, LEATHER, EBONY (4) (96) | 1997 | GM sourced |
| 195 | P, TRM, M, TRIM COMBINATION, LEATHER, BLACK (5) (96) | 1996 | Provisional |
| 196 | P, TRM, M, TRIM COMBINATION, LEATHER, BLACK (6) (97) | 1995 | Provisional |
| 197 | P, TRM, M, TRIM COMBINATION, LEATHER, EBONY/DARK WARM GRAY (7) (02), 629 | — | Provisional |
| 198 | P, TRM, M, TRIM COMBINATION, LEATHER, SPORT BLACK (01), 504 | — | GM sourced |
| 199 | P, CCU, M, PRIMARY COLOR, EXTERIOR, SPECIAL (GM BRAZIL USAGE ONLY), (NOTE: WILL BE PURGED IN 2000 MODEL YEAR) | 1997 | Provisional |
| 19A | P, STC, R, STRIPE COLOR, ACCENT, TWO TONE, MED GRAY MET/BLACK (93) 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.