← 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 501–600 of 959 codes beginning with A. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| AHW | P, SBR, R, ADJUSTER, MANUAL, 8 WAY, DRIVER & PASSENGER, 20719 | — | Provisional |
| AHX | Seat adjuster, second row 4-way power bolster | 2026 | GM sourced |
| AHY | P, SBR, R, ADJUSTER, POWER, 8 WAY, 3 POSITION MEMORY, DRIVER & PASS, 20719 | — | Provisional |
| AI0 | P, FIN, R, FLEET INCENTIVE, MARSH SUPERMARKETS (U/W-TRK GML), 821 | — | Provisional |
| AI1 | P, FIN, R, FLEET INCENTIVE, CARDINALE LSE. CO. (J/W-TRK MLST), 20801 | — | Provisional |
| AI2 | P, FIN, R, FLEET INCENTIVE, PIONEER ELECTRONICS (B/H/N/U/W-TRK CKGMLST), 20912 | — | GM sourced |
| AI3 | P, FIN, R, FLEET INCENTIVE, PEPSI-COLA BOTTLING (G/H/N/U/W-TRK CKGMLST), 821 | — | Provisional |
| AI4 | P, FIN, R, FLEET INCENTIVE, ALTERRA HEALTHCARE (H/U/W-TRK CKGST), 822 | — | Provisional |
| AI5 | P, FIN, R, FLEET INCENTIVE, NETVERSANT (TRK CKGMLST), 822 | — | GM sourced |
| AI6 | P, FIN, R, FLEET INCENTIVE, OVERHEAD DOOR (W-TRK CK), 10501 | — | Provisional |
| AI7 | P, FIN, R, FLEET INCENTIVE, SOLUTIA (B/W-TRK CK), 10917 | — | Provisional |
| AI8 | P, FIN, R, FLEET INCENTIVE, RAYCHOM MEDIA (N/W-TRK CKGST), 20812 | — | GM sourced |
| AI9 | P, FIN, R, FLEET INCENTIVE, GRIMMWAY FARMS (W-TRK CKGST), 20508 | — | Provisional |
| AIA | Restraint System Seat,pass,retr,3 Point | — | Reference |
| AIB | Restraint System Seat, Pass, Retr, 3 Point, Load Limit | — | Reference |
| AIC | Family Code, Panel Center | 1989 | GM dated |
| AID | Restraint System Seat, Pass, Retr, 3 Point, Deluxe | — | Reference |
| AIF | Restraint System Seat, Driver, Retr, 3 Point, Load Limit | — | Reference |
| AIG | Restraint System Seat, Driver, Retr, 3 Point | — | Reference |
| AII | Seat belts, 3-point driver and front passenger, height-adjustable, include pretensioners | 2026 | GM sourced |
| AIJ | Fleet Incentive U-rent-it (trk G) | — | Reference |
| AIK | Restraint System RR Seat, Shldr, Retr, 3 Point, 3rd Row,manual | — | Reference |
| AIL | Family Code, Panel Left | 1989 | GM dated |
| AIQ | P, IDENTIFICATION, EFFECTIVE POINT CONTROL - AIRBAG, SINGLE STAGE, 21015 E, 0 | — | Provisional |
| AIR | Family Code, Panel Right | 1989 | GM dated |
| AIS | P, IDENTIFICATION, EFFECTIVE POINT CONTROL - INTERIOR,, ONE-COAT PAINTING, 21018 E, 0 | — | Provisional |
| AJ0 | P, RESTRAINT, HEAD, RR SEAT, CLOTH COVERED, TWO, OUTSIDE, 518 E, 0 | — | GM sourced |
| AJ1 | P, GOT, R, WINDOW TINTED, DEEP, ALL EXCEPT W/S AND DRS | 1991 | GM sourced |
| AJ2 | P, SEAT RR, FOLDING, JUMPSEAT this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| AJ3 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, DRIVER this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AJ4 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, PASS this code has more than one documented meaning — filter by year | 1998 | Provisional |
| AJ5 | P, RESTRAINT, HEAD, FRT SEAT, VINYL COVERED, OPEN SECTION | 1991 | GM sourced |
| AJ6 | P, SBR, R, ADJUSTER, SEAT, POWER, 6 WAY, VERT, DRIVER, 10215 E, 8 this code has more than one documented meaning — filter by year | — | GM sourced |
| AJ7 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, DRIVER & PASS, FRT & SIDE | 1998 | GM sourced |
| AJ8 | P, TRAVEL BED, RR SEAT this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| AJ9 | P, TRAVEL BED, RR SEAT RR this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| AJA | Merchandised Pkg Synergy Special Edition | — | Reference |
| AJB | Merchandised Pkg Synergy Special Edition Var 2 | — | Reference |
| AJC | Restraint Head, FRT Seat, Up/down Adjustment | — | Reference |
| AJD | Restraint Head, FRT Seat, Up/down, Fore/aft Adjustment, Fold Ing Pass | — | Reference |
| AJF | Restraint Head, FRT Seat, Up/down Adjustment, Active | — | Reference |
| AJG | Restraint System Seat, Inflatable, Driver & Pass, FRT & Seat Side Single Stage | — | Reference |
| AJH | Restraint Provisions Cargo, Net, Tie-down FRT (first Seat Row) | — | Reference |
| AJK | Control Seat, Power Bolster, Power Lumbar | — | Reference |
| AJN | Adjuster FRT ST Manual, 6 Way, Vert, Driver | — | Reference |
| AJT | Restraint Provisions Cargo, Net, Tie-down | — | Reference |
| AJU | Primary Color Exterior, Sunny Melon (opel) (08) | — | Reference |
| AJV | Seat adjuster, second row power massage | 2026 | GM sourced |
| AK0 | deep-tinted rear glass | 2026 | GM sourced |
| AK1 | P, RESTRAINT, HEAD, FRT & RR SEAT, ACTIVE | 1998 | GM sourced |
| AK2 | P, RESTRAINT SYSTEM RR, SEAT, LAP this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| AK3 | P, RESTRAINT, HEAD, FRT SEAT, CLOTH COVERED, OPEN SECTION | 1998 | GM sourced |
| AK4 | P, RESTRAINT SYSTEM RR, SEAT - DELETE | 1998 | GM sourced |
| AK5 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, DRIVER & PASS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AK6 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, DRIVER & PASS - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AK7 | P, RESTRAINT SYSTEM RR, SEAT, SHLDR, RETR, 2 POINT this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| AK8 | P, RES, M, RESTRAINT SYSTEM, SEAT, SHLDR, 3 POINT this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AK9 | P, RESTRAINT SYSTEM RR, SEAT, SHLDR, RETR, 3 POINT, CTR LAP | 1997 | GM sourced |
| AKA | Windshield Clear, W/o Shaded Upper | — | Reference |
| AKB | Restraint System Seat, Inflatable, Driver & Pass Frt, Seat Side, FR T Row Roof Side | — | Reference |
| AKC | Restraint System Seat, Inflatable, Driver & Pass Frt, Stside, FRT RF | — | Reference |
| AKD | Seat Heavy Duty Front (40/40) Split | — | Reference |
| AKE | Seat, front passenger power massage | 2026 | GM sourced |
| AKF | Restraint Head,frt Seat,up/down,fore/aft Adjustment,passive,lockable | — | Reference |
| AKG | Restraint Provisions Child, Front Seat Rail, RR End | — | Reference |
| AKH | Restraint Head, FRT St, Driver And Pass Adjustable Driver Side Active | — | Reference |
| AKI | Window Laminated, RR Doors | — | Reference |
| AKJ | Glass, windshield shade band | 2026 | GM sourced |
| AKK | Glass, acoustic, laminated | 2026 | GM sourced |
| AKL | Windshield Heat Reflective Sytle | — | Reference |
| AKM | Window Type Clear | — | Reference |
| AKN | Window Type Tinted | — | Reference |
| AKO | Glass, deep-tinted | 2026 | GM sourced |
| AKP | Glass, solar absorbing | 2026 | GM sourced |
| AKQ | Adjuster Seat, Power, 6 Way, Vert, Pass | — | Reference |
| AKS | Seat RR Bkt, Swivel | — | Reference |
| AKV | Windshield Type Clear | — | Reference |
| AKW | Windshield Type Tinted | — | Reference |
| AKX | Windshield, solar absorbing | 2026 | GM sourced |
| AKY | Windshield Type Panoramic | — | Reference |
| AL0 | Front outboard Passenger Sensing System for frontal outboard passenger airbag | 2026 | GM sourced |
| AL1 | P, RESTRAINT, CARGO, NET, RH | 1983 | GM sourced |
| AL2 | P, CONTROL, SEAT, POWER LUMBAR | 1991 | GM sourced |
| AL3 | P, RES, M, RESTRAINT SYSTEM, SEAT, INFLATABLE, DRIVER - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AL4 | Seats, second row Executive seating this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| AL5 | P, SENSOR INDICATOR, INFLATABLE RESTRAINT, FRT PASS PRESENCE DETECTOR | 1995 | GM sourced |
| AL6 | P, RESTRAINT, CARGO | 1996 | GM sourced |
| AL7 | P, STS, M, SEAT, FRT SPLIT, DRIVER & PASS, 8 WAY ADJ, 2 WAY LUMBAR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AL8 | P, RESTRAINT, CARGO, NET - DELETE | 1998 | Provisional |
| AL9 | Seat adjuster, driver 2-way power lumbar | 2026 | GM sourced |
| ALA | Option Package Selection 1 | — | Reference |
| ALB | Option Package Selection 2 | — | Reference |
| ALC | Option Package Selection 3 | — | Reference |
| ALD | Option Package Selection 4 | — | Reference |
| ALE | Option Package Selection 5 | — | Reference |
| ALF | Option Package Selection 6 | — | Reference |
| ALG | Option Package Selection 7 | — | Reference |
| ALH | Option Package Selection 8 | — | Reference |
| ALI | Option Package Selection 9 | — | Reference |
| ALJ | Option Package Selection 10 | — | 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.