← 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 301–400 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 |
|---|---|---|---|
| AAY | Interior Trim Config #16 | — | Reference |
| AAZ | Lock Control Side Door, Vehicle Acceleration Activated | — | Reference |
| AB0 | 63 P, GBS, R, WINDOW SIDE BODY, NOT DESIRED, 727 E, 0 | — | Provisional |
| AB1 | 64 P, WINDOW, RR QTR, ORNAMENTAL this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| AB2 | 65 P, GBS, R, WINDOW SIDE BODY, STA, LH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| AB3 | 66 P, SAA, M, SEATING ARRANGEMENT, 6 PASS | 1998 | GM sourced |
| AB4 | 67 P, SAA, M, SEATING ARRANGEMENT, 5 PASS, WITH BUCKET SEATS | 1998 | GM sourced |
| AB5 | 68 P, LOCK CONTROL, SIDE DR, ELEC, KEY ACTIVATED this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| AB6 | 69 P, GBS, R, WINDOW SIDE BODY, STA, RH | 1998 | GM sourced |
| AB7 | 70 P, GOT, R, WINDOW TINTED, DEEP, TAIL GATE this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| AB8 | 71 P, SEAT RR, BKT, W/CTR CONSOLE | 1999 | Provisional |
| AB9 | 72 P, WINDOW, RR QTR, HINGED | 1997 | GM sourced |
| ABA | 37 P, SCF, R, SEAT CONFIGURATION, #1 | 1993 | GM sourced |
| ABB | 38 P, SCF, R, SEAT CONFIGURATION, #2 | 1993 | GM sourced |
| ABC | 39 P, SCF, R, SEAT CONFIGURATION, #3 | 1993 | GM sourced |
| ABD | 40 P, SCF, R, SEAT CONFIGURATION, #4 | 1993 | GM sourced |
| ABE | 41 P, SCF, R, SEAT CONFIGURATION, #5 | 1993 | GM sourced |
| ABF | 42 P, SCF, R, SEAT CONFIGURATION, #6 this code has more than one documented meaning — filter by year | 1993 | Provisional |
| ABG | 43 P, SCF, R, SEAT CONFIGURATION, #7 | 1993 | GM sourced |
| ABH | 44 P, SCF, R, SEAT CONFIGURATION, #8 | 1993 | GM sourced |
| ABI | 45 P, SCF, R, SEAT CONFIGURATION, #11 | 1999 | GM sourced |
| ABJ | 46 P, SCF, R, SEAT CONFIGURATION, #9 | 1999 | GM sourced |
| ABK | 47 P, SCF, R, SEAT CONFIGURATION, #10 | 1999 | GM sourced |
| ABL | 48 P, IDENTIFICATION, DEALER ALLOWANCE ADMINISTRATIVE | 1990 | Provisional |
| ABM | 49 P, SCF, R, SEAT CONFIGURATION, #12, 626 E, 1, 1, A | — | GM sourced |
| ABN | 50 P, SSS, M, SENSOR, OXYGEN NON-HEATED this code has more than one documented meaning — filter by year | 1995 | Provisional |
| ABO | 51 P, SCF, R, SEAT CONFIGURATION, #13, 626 E, 1, 1, A | — | GM sourced |
| ABP | Window Clear, All, W/s Shaded | — | Reference |
| ABR | Window Manual Operated, FRT DR | — | Reference |
| ABU | Restraint Head, RR Seat, Cloth Covered, Closed Section, Up/ Down Adjustment | — | Reference |
| ABV | Executive Second Row Seating Package this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| ABW | Window Opaque, All Except W/s And FRT Drs | — | Reference |
| ABX | Interior Trim Config #19 | — | Reference |
| ABY | Interior Trim Config #20 | — | Reference |
| ABZ | Window Power Operated, Safety | — | Reference |
| AC0 | 99 P, WINDOW, SLIDING, RR SIDE DR, 10724 | — | Provisional |
| AC1 | P, RESTRAINT PROVISIONS, CHILD, FRONT, LH, 1027 E, 0 this code has more than one documented meaning — filter by year | — | GM sourced |
| AC2 | P, WINDOW, SLIDING FRT DR, RH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| AC3 | P, WINDOW, SLIDING FRT DR, LH, 626 E, 0 | — | GM sourced |
| AC4 | P, RESTRAINT PROVISIONS, CHILD, FRONT, RH, 1027 E, 0 | — | GM sourced |
| AC5 | P, FILLER, BODY SI RR WDO OPG | 1990 | GM sourced |
| AC6 | P, GOT, R, WINDOW TINTED, DEEP, RR S/D, 10328 | — | GM sourced |
| AC7 | P, PIPE, FUEL TANK FILL VENT - UNRESTRICTED this code has more than one documented meaning — filter by year | 1991 | GM sourced |
| AC8 | 2011 Oem Engine Physical ID Ac8 & Production Number 12625136 this code has more than one documented meaning — filter by year | — | Reference |
| AC9 | P, SBR, R, ADJUSTER, SEAT, AUTO, CONTOURING CONTROL | 1996 | GM sourced |
| ACA | Net Cargo, Intrusion | — | Reference |
| ACB | Interior Trim Config #21 | — | Reference |
| ACC | Interior Trim Configuration #22 | — | Reference |
| ACF | 78 P, IDENTIFICATION, I.R. SYSTEM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| ACG | 79 P, FILLER, OPAQUE GLASS, SI RR WDO | 1992 | GM sourced |
| ACH | Restraint Provisions Retractor,automatic Locking | — | Reference |
| ACI | Interior Trim Config #23 | — | Reference |
| ACL | Family Code, Air Cleaner | 1988 | GM dated |
| ACM | 85 P, IDENTIFICATION, LEAD UNITS | 1998 | Provisional |
| ACO | Identification Accessory Catalog Offering | — | Reference |
| ACP | Family Code, Air Compressor | 1988 | GM dated |
| ACS | Seat adjuster, second row, 6-way power | 2026 | GM sourced |
| ACT | Net Convenience And Trunk Liner | — | Reference |
| ACX | Sales Package 'hit The Road' Lpo | — | Reference |
| ACZ | Sales Package Ltz | — | Reference |
| AD0 | 2011 Oem Engine Physical ID Ad0 & Production Number 12626041 | — | Reference |
| AD1 | P, SAA, M, SEATING ARRANGEMENT, 7 PASS, WITH ONE LH INTEGRAL CHILD SEAT this code has more than one documented meaning — filter by year | 1998 | Provisional |
| AD2 | P, WINDOW, RR DR - DELETE | 1998 | GM sourced |
| AD3 | P, WINDOW, HINGED, ROOF this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| AD4 | P, RESTRAINT PROVISIONS, CHILD, FRONT, PASS SIDE | 1999 | Provisional |
| AD5 | P, WINDOW, SIDE RR SLIDING this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| AD6 | P, SAA, M, SEATING ARRANGEMENT, 6 PASS, WITH ONE INTEGRAL CHILD SEAT | 1998 | Provisional |
| AD7 | P, SAA, M, SEATING ARRANGEMENT, 6 PASS, WITH TWO INTEGRAL CHILD SEATS | 1998 | GM sourced |
| AD8 | P, SAA, M, SEATING ARRANGEMENT, 7 PASS, WITH ONE RH INTEGRAL CHILD SEAT | 1998 | GM sourced |
| AD9 | P, SAA, M, SEATING ARRANGEMENT, 7 PASS, WITH TWO INTEGRAL CHILD SEATS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| ADA | P, IDENTIFICATION, KNUCKLES-SPECIFIC FRT & RR, CONCEPT (C5 Y) | 1992 | Provisional |
| ADB | SEATING ARRANGEMENT SEVEN PASS, WITH ONE INTERGAL | — | Provisional |
| ADC | P, IDENTIFICATION, NOISE CANC EXH CONCEPT (C5 Y) | 1992 | Provisional |
| ADD | P, IDENTIFICATION, C/O TECHNOLOGY EXH CONCEPT (C5 Y) | 1992 | Provisional |
| ADE | P, IDENTIFICATION, FUEL TANK, BLOW MLD, HDPE, CONCEPT (C5 Y) | 1992 | Provisional |
| ADF | P, IDENTIFICATION, FUEL TANK, ROTATIONAL MLD, HDPE, CONCEPT (C5 Y) | 1992 | Provisional |
| ADG | P, IDENTIFICATION, FUEL TANK, STEEL, CONCEPT (C5 Y) | 1998 | Provisional |
| ADH | P, IDENTIFICATION, FUEL LINES, NYLON, CONCEPT (C5 Y) | 1992 | Provisional |
| ADI | P, IDENTIFICATION, FUEL LINES, STEEL, CONCEPT (C5 Y) | 1992 | Provisional |
| ADJ | P, IDENTIFICATION, ABS-WITH ASR, FWD PKG, CONCEPT (C5 Y) | 1992 | Provisional |
| ADK | P, IDENTIFICATION, ABS-WITH ASR, RWD PKG, CONCEPT (C5 Y) | 1992 | Provisional |
| ADL | Restraint System Seat, Inflatable, Driver & Pass, Single Stage | — | Reference |
| ADM | Restraint System Seat, Inflatable, Driver & Pass, Dual Stage | — | Reference |
| ADN | Interior Trim Config #24 | — | Reference |
| ADP | Interior Trim Config #25 | — | Reference |
| ADQ | Interior Trim Config #26 | — | Reference |
| ADS | Adjuster FRT ST Power, Multi-directional, Recliner Manual, Driver | — | Reference |
| ADT | 2010 Oem Engine Physical ID Adt & Production Number 12626034 | — | Reference |
| ADU | 2010 Oem Engine Physical ID Adu & Production Number 12626035 | — | Reference |
| ADV | 2010 Oem Engine Physical ID Adv & Production Number 12626036 this code has more than one documented meaning — filter by year | — | Reference |
| ADW | 2010 Oem Engine Physical ID Adw & Production Number 12626037 this code has more than one documented meaning — filter by year | — | Reference |
| ADX | 2010 Oem Engine Physical ID Adx & Production Number 12626038 | — | Reference |
| ADY | 2010 Oem Engine Physical ID Ady & Production Number 12626039 this code has more than one documented meaning — filter by year | — | Reference |
| ADZ | 2010 Oem Engine Physical ID Adz & Production Number 12626040 | — | Reference |
| AE0 | P, PAS, R, SEAT PASSENGER, PASSENGER, BENCH (BEDFORD), 20214 | — | Provisional |
| AE1 | P, PAS, R, SEAT PASSENGER, FRT BKT, HIGH BACK this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| AE2 | P, LATCH, RR COMPARTMENT, SAFETY, MANUAL RELEASE, 127 | — | GM sourced |
| AE3 | Window Power Operated, FRT & RR DR | — | Reference |
| AE4 | P, STS, M, SEAT, FRT BKT, SPORT, 321 E, 0 | — | GM sourced |
| AE5 | P, LCE, R, LOCK CONTROL, ENTRY, REMOTE ENTRY, LOW POWER, START, 11024 E, 4 | — | 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.