← 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 671 codes beginning with S. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| S9Y | P, DIRECT SALES, LANCIA, 10315 E 0 | — | Provisional |
| S9Z | P, DIRECT SALES, ALFA ROMEO, 10315 E 0 | — | Provisional |
| SA0 | Accessory Liners - Interior Storage Compt | — | Reference |
| SA1 | Accessory Security System Upgrade, Keyless Entry | — | Reference |
| SA2 | Accessory Security System Upgrade, Shock | — | Reference |
| SA3 | Accessory Security System Upgrade, Tailgate | — | Reference |
| SA4 | Accessory Storage Bag - Center Console | — | Reference |
| SA5 | Accessory Shield, Underbody | — | Reference |
| SA6 | Accessory Shift Knobs - Alternate Design | — | Reference |
| SA7 | Accessory Shift Knobs, Alternate Finish | — | Reference |
| SA8 | Accessory Safety Vest | — | Reference |
| SA9 | Accessory Side Rails, Roof Rack | — | Reference |
| SAA | Family Code, Seating Arrangement | 1989 | GM dated |
| SAB | Identification Active Fuel Management Engine | — | Reference |
| SAC | Accessory Charging Cord - 220v | — | Reference |
| SAF | Tire carrier, lockable outside spare | 2026 | GM sourced |
| SAH | Accessory Sill Plates, Chrome | — | Reference |
| SAI | Accessory Sill Plates, Stainless | — | Reference |
| SAK | 22 inch High gloss black aluminum wheels with machined accents (LPO dealer-installed accessory) | 2026 | GM sourced |
| SAL | P, PLT, R PLANT CODE, RAMOS ARIZPE, MEXICO this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| SAM | Accessory Skid Plates | — | Reference |
| SAN | Shock Absorbers Rr, NO Rear Shocks Desired | — | Reference |
| SAO | Accessory Smokers Package | — | Reference |
| SAP | Accessory Child Seat - Age Group 1 | — | Reference |
| SAQ | Accessory Snow Chains | — | Reference |
| SAS | Accessory Spare Tire Carrier, Rear | — | Reference |
| SAW | Accessory Spare Tire Cover, Soft | — | Reference |
| SAX | MultiPro Tailgate Audio System by Kicker (LPO dealer-installed accessory) | 2026 | GM sourced |
| SAY | 22 inch Bright finish aluminum wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| SAZ | Accessory Park Assist - Front | — | Reference |
| SB0 | Accessory Hands Free Phone Cradle - I/p Mounted | — | Reference |
| SB1 | Accessory Splash Guards, Flat | — | Reference |
| SB2 | Accessory Spoiler, Decklid, Flush Mount | — | Reference |
| SB3 | Accessory Spoiler, Decklid, Wing | — | Reference |
| SB4 | Accessory Spoiler, Front | — | Reference |
| SB5 | Accessory Spoiler - Liftgate | — | Reference |
| SB6 | Accessory Spoiler, Roof | — | Reference |
| SB7 | Black tailgate lettering (LPO dealer-installed accessory) | 2026 | GM sourced |
| SB8 | Accessory Spoiler/molding/protector, Tailgate | — | Reference |
| SB9 | Accessory Decal Package - Design 2 | — | Reference |
| SBA | 2009 Oem Engine Physical ID Sba & Production Number 12604905 | — | Reference |
| SBE | Equipment Seat Belt Retractor, Pretensioner, 2nd | — | Reference |
| SBF | Restraint Seat Belt Var. 1 | — | Reference |
| SBG | Restraint Seat Belt, Var 2 | — | Reference |
| SBI | Alarm Occupant Warning, Voice | — | Reference |
| SBJ | Shaft Steering Column, Intermediate, Rigid | — | Reference |
| SBK | Restraint Seat Belt Pretensioner, RR | — | Reference |
| SBL | 22 inch Gloss black aluminum wheels (LPO dealer-installed accessory) | 2026 | GM sourced |
| SBR | Family Code, Adjuster | 1999 | GM dated |
| SBS | 2009 Oem Engine Physical ID Sbs & Production Number 12614365 | — | Reference |
| SBT | Accessory Roof Panel Kit | — | Reference |
| SBU | C, CCU, M PRIMARY COLOR, EXTERIOR, GREEN WE262A | 1998 | GM sourced |
| SBV | Equipment Headlamps, Projection Type | — | Reference |
| SBW | Equipment Headlamps, Projection Type, Sporty | — | Reference |
| SBX | Accessory Speaker System - Rear Audio | — | Reference |
| SBY | Sport bar, bed-mounted, tubular (LPO dealer-installed accessory) | 2026 | GM sourced |
| SBZ | Sport Pedal Cover Kit (LPO dealer-installed accessory) | 2026 | GM sourced |
| SC0 | Accessory Stake Hooks/tie Downs | — | Reference |
| SC1 | Accessory Stabilizer Bar Kit | — | Reference |
| SC2 | Accessory Steering Wheel - Alternate Design | — | Reference |
| SC5 | Accessory Step Shields | — | Reference |
| SC6 | Accessory Storage Bag - Floor Console | — | Reference |
| SC7 | Accessory Storage Bag - Removable Hard Top | — | Reference |
| SC9 | Accessory Storage Rack - Wall Mounted | — | Reference |
| SCA | P, PLT, R PLANT CODE, SCARBOROUGH, ONT, CANADA | 1997 | GM sourced |
| SCC | Family Code, (seo) Color | 1998 | GM dated |
| SCD | Family Code, (seo) Color Code #1 | 1998 | GM dated |
| SCE | Family Code, (seo) Color Code #2 | 1998 | GM dated |
| SCF | Family Code, Seat Configuration | 1994 | GM dated |
| SCH | Accessory Supercharger | — | Reference |
| SCI | Family Code, Seat Child | 1994 | GM dated |
| SCJ | Accessory Suspension Lowering Kit | — | Reference |
| SCL | Family Code, Steering Column | 1991 | GM dated |
| SCN | RST Edition, includes (SGK) 22 inch Gloss Black aluminum wheels with custom silver inserts this code has more than one documented meaning — filter by year | 2019 | Reference |
| SCQ | Accessory Sun Shades, Rear Side Windows | — | Reference |
| SCR | Family Code, Spacer | 1988 | GM dated |
| SCS | P, PLT, R PLANT CODE, SAO CAETANO DO SUL, BRAZIL | 1997 | GM sourced |
| SCW | Accessory Tail Lamp Guards, Black | — | Reference |
| SCX | Accessory Tail Lamp Guards, Chrome | — | Reference |
| SCY | Accessory Tail Lamps, Alternate Color | — | Reference |
| SD2 | Accessory Tire, In-house Development | — | Reference |
| SD3 | Rear Fold Flat Cargo Organizer (LPO dealer-installed accessory) | 2025 | GM sourced |
| SD4 | Accessory Tire Inflator | — | Reference |
| SD5 | Accessory Tire Pressure Monitor | — | Reference |
| SD6 | Accessory Floor Mats - Plastic With Lip | — | Reference |
| SD7 | Accessory Tonneau Cover, Hard Shell | — | Reference |
| SD8 | Accessory Tonneau Cover, Passenger Compartment | — | Reference |
| SDA | Black recovery hooks (LPO dealer-installed accessory) | 2019 | Reference |
| SDB | Accessory Child Seat - Age Group 2/3 | — | Reference |
| SDD | Accessory Trailer Hitch, Fixed | — | Reference |
| SDE | Accessory Trailer Hitch - Removable | — | Reference |
| SDF | Accessory Transmission Cooler | — | Reference |
| SDG | Accessory Cupholder - Lower Console Drawer | — | Reference |
| SDH | Accessory Floor Mat Cover | — | Reference |
| SDI | Accessory Triangle, Reflective | — | Reference |
| SDJ | Accessory Trim Rings, Marker Lamp | — | Reference |
| SDK | Accessory Uhp (universal Hands Free Phone) Cradle | — | Reference |
| SDL | Accessory Utility Rack | — | Reference |
| SDM | Accessory Turbo Charger Upgrade Kit | — | Reference |
| SDN | Accessory Valve Stem Cap, Extension | — | 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.