← 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 E. One meaning shown per code — the best-sourced one we hold. Search above for the rest.
| Code | Meaning | Years | Sourcing |
|---|---|---|---|
| E8Z | P, LOCAL, S. AFRICA-DELTA MOTORS (E8Z), 20430 | — | Provisional |
| E90 | P, POCKET, FRONT SEAT BACK, DRIVER | 1998 | GM sourced |
| E91 | P, POCKET, FRONT SEAT BACK, PASS | 1998 | GM sourced |
| E92 | P, DOOR, DYNAMIC SIDE IMPACT - DELETE this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E93 | P, CRC, R, COVER, RR COMPT, TONNEAU, LASH ON, 1213 | — | Provisional |
| E94 | Beauville/rally Stx Equipment this code has more than one documented meaning — filter by year | — | Reference |
| E95 | P, CRC, R, COVER, RR COMPT, TONNEAU, RR COMPT, 1213 E, 0 | — | GM sourced |
| E96 | P, COVER, RR COMPT LID, INNER | 1998 | GM sourced |
| E97 | P, POCKET, RR SEAT, CUSH FRT | 1999 | Provisional |
| E98 | P, POCKET, FRONT SEAT, CUSH FRT, DRIVER | 1999 | Provisional |
| E99 | P, POCKET, FRONT SEAT, CUSH FRT, PASS | 1999 | Provisional |
| E9A | P, FIN, R, FLEET INCENTIVE, THE HAKE GROUP (H/W-TRK CKGMLST), 20422 | — | Provisional |
| E9B | P, FIN, R, FLEET INCENTIVE, BURGER KING (U/W-TRK CKG) | 1999 | GM sourced |
| E9C | P, FIN, R, FLEET INCENTIVE, FAMILY DOLLAR STORES (C/H/W-TRK GMLST), 20422 | — | Provisional |
| E9D | P, FIN, R, FLEET INCENTIVE, JOHN MORRELL & CO. INC. (C/G/H/N/U/W-TRK CKGMPST), 20801 | — | Provisional |
| E9E | P, FIN, R, FLEET INCENTIVE, HITT CONSTRUCTION (TRKNCKGMLST), 11108 | — | Provisional |
| E9F | P, FIN, R, FLEET INCENTIVE, WATSON LABORATORIES (B/C/H/N/S/W-TRK ST), 20801 | — | Provisional |
| E9G | P, FIN, R, FLEET INCENTIVE, PENN MILLERS INSURANCE CO. (W), 11108 | — | Provisional |
| E9H | P, FIN, R, FLEET INCENTIVE, HEDRICK INDUSTRIES (C/G/H/U/W-TRK CKST), 20801 | — | Provisional |
| E9I | P, FIN, R FLEET INCENTIVE, NORTHERN NATURAL GAS COMPANY (W-TRK CKGST), 20821 | — | Provisional |
| E9J | P, FIN, R FLEET INCENTIVE, BAKER/HUGHES (H/W-TRK CKGST), 10815 | — | Provisional |
| E9K | P, FIN, R FLEET INCENTIVE, SOLVAY MANAGEMENT SERVICES, INC. (H/U/W-TRK CKST) | 1999 | GM sourced |
| E9L | P, FIN, R FLEET INCENTIVE, DOLESE (-TRK CKG), 20306 | — | Provisional |
| E9M | P, FIN, R FLEET INCENTIVE, FORT JAMES CORPORATION (N/U/W-TRK CKMLST) | 1999 | GM sourced |
| E9N | P, FIN, R FLEET INCENTIVE, DEUTSCH FINANCIAL SERVICES (W-TRK ST), 20611 | — | Provisional |
| E9P | P, FIN, R FLEET INCENTIVE, ALCATEL (W-TRK CKGST), 11128 | — | Provisional |
| E9Q | Cover Park Brake Lever Opening | — | Reference |
| E9R | P, FIN, R FLEET INCENTIVE, CAROLINA TRACTOR & EQUIPMENT, (W -TRK CKGMLST), 20306 | — | Provisional |
| E9S | P, FIN, R FLEET INCENTIVE, AGFA (N/U/W) | 1998 | GM sourced |
| E9T | P, FIN, R FLEET INCENTIVE, ANDERSON MERCHANDISERS L.P. (N/W-TRK CK), 20305 | — | Provisional |
| E9U | P, FIN, R FLEET INCENTIVE, CRANE CO.(C/H/N/U/W -TRK CK), 20306 | — | Provisional |
| E9V | P, FIN, R FLEET INCENTIVE, U-SAVE AUTO RENTAL OF AMERICA, INC. (H/J/K/M/N/U/W-TRK CKGMLST) | 1999 | GM sourced |
| E9W | P, FIN, R FLEET INCENTIVE, NOLAND COMPANY (N/U/W-TRK CKMLST), 21101 | — | Provisional |
| E9X | P, FIN, R FLEET INCENTIVE, BENJAMIN MOORE & CO. (N/U/W) | 1998 | GM sourced |
| E9Y | P, FIN, R FLEET INCENTIVE, PENN LINE SERVICES (W-TRK CKGST), 11029 | — | Provisional |
| E9Z | P, SPK, M KEY, SPEEDO - DELETE | 1998 | GM sourced |
| EA1 | P, POCKET, FRONT SEAT BACK, LH, 20212 E, 0, 0, A | — | GM sourced |
| EA2 | P, POCKET, FRONT SEAT BACK, RH, 20212 E, 0, 0, A | — | GM sourced |
| EAA | P, MSM, R MODEL CONVERSION, 200I SOUTH AFRICA | 1997 | Provisional |
| EAB | Trim Seat Cloth, Labyrinth | — | Reference |
| EAC | Trim Seat Cloth, Dune | — | Reference |
| EAD | Trim Seat Cloth, Vitesse | — | Reference |
| EAE | Trim Seat Cloth, Avenue | — | Reference |
| EAF | Trim Seat Leather, Siena | — | Reference |
| EAG | Trim Seat Leather, Siena, Perf | — | Reference |
| EAI | Trim Seat Leather, Soleil Keisel | — | Reference |
| EAJ | Trim Seat Leather, Soleil Keisel, Perf | — | Reference |
| EAK | Trim Seat Cloth, Floating (kawashima) | — | Reference |
| EAL | Trim Seat Leather, Soleil Keisel, Mini Perf | — | Reference |
| EAM | Trim Seat Urethane, Leatherette | — | Reference |
| EAN | Trim Seat Leather, Soleil Keisel, Diamond Perf | — | Reference |
| EAT | Trim Seat Leather/vinyl, Argento | — | Reference |
| EAU | Trim Seat Cloth, Milland | — | Reference |
| EAV | Trim Seat Cloth, Harley | — | Reference |
| EAW | Trim Seat Cloth, Margret | — | Reference |
| EAY | Trim Seat - Delete | — | Reference |
| EAZ | Trim Seat Cloth, Plateau | — | Reference |
| EB1 | P, GVW, M GVW RATING, 6,001 LBS, 20722 | — | GM sourced |
| EB3 | P, CAB, AIR SUSPENSION, 20430 E, 8 | — | Provisional |
| EB4 | P, WLB, R WHEELBASE, 109 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EB5 | P, CAB, EQUIPMENT, ROUTING this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| EB6 | P, GVW, M GVW RATING, 6,050 LBS, 10423 | — | Provisional |
| EB7 | P, WLB, R WHEELBASE, 231 INCH, 111 | — | Provisional |
| EB8 | P, WLB, R WHEELBASE, 280 INCH, 111 | — | Provisional |
| EBC | Trim Seat Cloth, Basin | — | Reference |
| EBD | Trim Seat Cloth, Mesh, Var 1 | — | Reference |
| EBF | Trim Seat Leather, Meridian | — | Reference |
| EBG | Trim Seat Cloth, Flat Woven | — | Reference |
| EBH | Family Code, Heater Eng | 1990 | GM dated |
| EBI | Pocket,front Seat Back | — | Reference |
| EBJ | Trim Seat Cloth, Mesh | — | Reference |
| EBL | Trim Seat Cloth, Flash | — | Reference |
| EBM | Trim Seat Cloth, Breva | — | Reference |
| EBN | Trim Seat Cloth, Mana | — | Reference |
| EBO | Trim Seat Cloth, Curve | — | Reference |
| EBP | Trim Seat PU Leather, Purisme-embo | — | Reference |
| EBQ | Trim Seat Cloth, Montile | — | Reference |
| EBS | Trim Seat Leather, Nuance Sandstone, Mini-perf | — | Reference |
| EBV | Trim Seat Leather, Wide SQ Perforated Dakar | — | Reference |
| EBW | Trim Seat Cloth, Cordoba | — | Reference |
| EBX | Trim Seat Cloth, Scene Modified | — | Reference |
| EBY | Trim Seat Cloth, Lace | — | Reference |
| EBZ | Trim Seat Cloth, Ribbon | — | Reference |
| EC0 | P, PROVISIONS, EUROPEAN COMPLIANT HVAC CONTROLS this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| EC1 | P, WLB, R WHEELBASE, 165.5 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EC2 | P, WLB, R WHEELBASE, 183.5 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EC3 | P, WLB, R WHEELBASE, 195.5 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EC4 | P, WLB, R WHEELBASE, 213.5 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EC7 | P, WLB, R WHEELBASE, 134 INCH this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| EC8 | P, WLB, R WHEELBASE, 135 INCH/3,365 MM | 1998 | Provisional |
| EC9 | P, WLB, R WHEELBASE, 128 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| ECA | P, EQUIPMENT, FOLDABLE KEY, 20820 E, 0 | — | GM sourced |
| ECB | Additional Foldable Key | — | Reference |
| ECC | Trim Seat Leather, Perforated Mondial | — | Reference |
| ECD | Trim Seat Leather, (tbd2-gsv)(gmdat) | — | Reference |
| ECE | Trim Seat Leather, (tbd1-gsv)(gmdat) | — | Reference |
| ECH | Trim Seat Suede, Perf | — | Reference |
| ECK | Lever Auto Trans, Shift, Straight, Tu/td | — | Reference |
| ECM | P, MODULE, INFLATABLE RESTRAINT, EUROPEAN COMPLIANT, 20521 E, 1 | — | GM sourced |
| ECN | Lever Auto Trans, Shift, Straight | — | 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.