← 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 401–500 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 |
|---|---|---|---|
| ECO | P, NPC, M CONVERSION NAME PLT, "ECO 4", 915 E, 0 | — | Provisional |
| ECP | FAMILY CODE, ENGINE CONTROL, 20604 | — | Provisional |
| ECQ | Trim Seat Cloth, Wabe | — | Reference |
| ECR | Trim Seat Leather, Tuscany, Mini Perf | — | Reference |
| ECS | Trim Seat Suede, Perforated | — | Reference |
| ECT | Trim Seat Leather, Semi Aniline | — | Reference |
| ECW | Trim Seat Vinyl, Meridian | — | Reference |
| ECX | Trim Seat Cloth, Struct | — | Reference |
| ECY | Trim Seat Cloth, Flaxseed | — | Reference |
| ECZ | Trim Seat Cloth, Jungle | — | Reference |
| ED1 | P, WLB, R WHEELBASE, 136 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| ED2 | P, WLB, R WHEELBASE, 160 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| ED3 | P, WLB, R WHEELBASE, 211 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| ED5 | P, WLB, R WHEELBASE, 201 INCH this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| ED6 | P, WLB, R WHEELBASE, 132 INCH/3,360 MM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| ED7 | P, WLB, R WHEELBASE, 217 INCH this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| ED8 | P, WLB, R WHEELBASE, 237 INCH this code has more than one documented meaning — filter by year | 1988 | GM sourced |
| ED9 | P, WLB, R WHEELBASE, 164 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EDA | Sales Package Eco-light | — | Reference |
| EDD | Differential Electric Driven Differential | — | Reference |
| EDN | Trim Seat Cloth, Canyon SR | — | Reference |
| EDO | Trim Seat Cloth, Pisces 2 | — | Reference |
| EDQ | Trim Seat Cloth, Rinde | — | Reference |
| EDT | Trim Seat Leather, Fine Spot Perf, Nappa | — | Reference |
| EDU | Trim Seat Cloth, Stockade / Spectrum | — | Reference |
| EDX | Trim Seat Leather, Mondial | — | Reference |
| EE0 | Cover Inst, Switch | — | Reference |
| EE1 | C, WLB, R WHEELBASE, 108.8 INCH/2765 MM, 10116 E, 5 | — | Provisional |
| EE2 | P, MNT, R MOUNT, CAB, SOFT RIDE, 20610 | — | Provisional |
| EE3 | C, WLB, R WHEELBASE, 150.8 INCH/3830 MM, 10116 E, 5 | — | Provisional |
| EE4 | P, WLB, R WHEELBASE, 254 INCH, 10217 | — | GM sourced |
| EE5 | P, WLB, R WHEELBASE, 165 INCH this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| EE6 | C, WLB, R WHEELBASE, 121 INCH/3,078 MM | 1998 | Provisional |
| EE7 | C, WLB, R WHEELBASE, 141 INCH/3,578 MM | 1998 | Provisional |
| EE8 | C, WLB, R WHEELBASE, 143 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EE9 | P, WLB, R WHEELBASE, 144 INCH this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| EEC | Trim Seat Cloth, Shrubby | — | Reference |
| EED | Trim Seat Leather, Tuscany Matte Opulent Mini Perf | — | Reference |
| EEE | Trim Seat Cloth, Tracki 4 | — | Reference |
| EEG | Trim Seat Cloth, Quartz | — | Reference |
| EEH | Trim Seat Cloth 2, Zircon | — | Reference |
| EEJ | Trim Seat Cloth/vinyl, Amber | — | Reference |
| EEK | Trim Seat Cloth - Wave | — | Reference |
| EEL | Trim Seat Leather, Nuance Sandstone, Perf | — | Reference |
| EEN | Trim Seat Cloth, Hsv Amigo | — | Reference |
| EEO | Trim Seat Leather, Non Perforated Hsv Dakar | — | Reference |
| EEP | Trim Seat Leather, Non Perforated, Hsv Nappa | — | Reference |
| EEQ | Trim Seat Cloth, Press Box Fabric | — | Reference |
| EER | Trim Seat Cloth, Magnetic Fabric | — | Reference |
| EES | Trim Seat Cloth, Line Drive Fabric | — | Reference |
| EEV | Trim Seat Cloth, Sandcastle | — | Reference |
| EEW | Trim Seat Cloth/leatherette, Sandcastle, Var 1 | — | Reference |
| EEY | Trim Seat Cloth, Wired | — | Reference |
| EEZ | Trim Seat Tall Grass | — | Reference |
| EF0 | P, LOCAL, S. AFRICA-DELTA MOTORS (EF0), 20513 | — | Provisional |
| EF1 | P, BUMPER PROVISIONS, RR - DELETE | 1998 | GM sourced |
| EF2 | P, CTY, R COUNTRY, GUINEA-BISSAU this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| EF3 | P, LOCAL, PACKAGE; DEBIS, 20503 | — | Provisional |
| EF4 | P, CTY, R COUNTRY, SUDAN this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| EF5 | P, CTY, R COUNTRY, PANAMA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| EF6 | P, CTY, R COUNTRY, TAHITI this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| EF7 | P, CTY, R COUNTRY, UNITED STATES OF AMERICA (USA) | 1998 | GM sourced |
| EF8 | P, CTY, R COUNTRY, NAMIBIA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| EF9 | P, LOCAL, S. AFRICA-DELTA MOTORS (EF9), 222 | — | Provisional |
| EFA | P, LOCAL, WHL & TYRE ASM 185/65HR14 STEEL(RECT. VENTS), 20826 | — | Provisional |
| EFB | P, LOCAL, WHL & TYRE ASM 185/65HR14 STEEL(ROUND VENTS), 20815 | — | Provisional |
| EFC | P, LOCAL, WHL & TYRE ASM-175/70 R14 ALLOY, 20710 | — | Provisional |
| EFD | P, LOCAL, WHL & TYRE ASM-7J 245/75 R15 ALLOY 6 SPOKE, 20503 | — | Provisional |
| EFE | P, MSM, R MODEL CONVERSION, 1.6 CS SOUTH AFRICA | 1999 | Provisional |
| EFF | P, LOCAL, WHL & TYRE ASM-175/65 TR14 (4300), 20503 | — | Provisional |
| EFG | P, LOCAL, WHL & TYRE ASM 5.5J 185/65HR14 ALLOY (8SPOKE), 20826 | — | Provisional |
| EFH | P, LOCAL, WHL&TYRE ASM-5.5J175/65TR14;STEEL;10VENT;10SPKCVR, 20919 | — | Provisional |
| EFI | P, LOCAL, HARNESS; ACCESSORY (EFI), 20503 | — | Provisional |
| EFJ | P, LOCAL, S. AFRICA-DELTA MOTORS (EFJ), 20503 | — | Provisional |
| EFK | P, LOCAL, WHL&TYRE ASM-5.5J175/65TR14;STEEL;10VENT;5 SPKCVR, 20919 | — | Provisional |
| EFL | P, LOCAL, PACKAGE; F-SERIES FTM1200T 6X2, 21029 | — | Provisional |
| EFM | P, LOCAL, S. AFRICA-DELTA MOTORS (EFM), 222 | — | Provisional |
| EFN | P, LOCAL, PACKAGE; GAMMA 1.6 COMFORT N/BACK, 20903 | — | Provisional |
| EFO | P, LOCAL, S. AFRICA-DELTA MOTORS (EFO), 20503 | — | Provisional |
| EFP | P, LOCAL, WHL & TYRE ASM-7J/215 R15 STEEL SILVER, 20503 | — | Provisional |
| EFQ | P, LOCAL, PACKAGE; GAMMA 1.4 LITE H/BACK, 20503 | — | Provisional |
| EFR | P, LOCAL, PACKAGE; GAMMA 1.4 COMFORT H/BACK, 20503 | — | Provisional |
| EFS | P, LOCAL, PACKAGE; GAMMA 1.6 ELEGANCE H/BACK, 20503 | — | Provisional |
| EFT | P, LOCAL, PACKAGE; GAMMA 1.6 SPORT H/BACK, 20503 | — | Provisional |
| EFU | P, LOCAL, PACKAGE; GAMMA 1.8 GSI H/BACK, 20503 | — | Provisional |
| EFV | P, LOCAL, PACKAGE; GAMMA 1.4 COMFORT N/BACK, 20503 | — | Provisional |
| EFW | P, LOCAL, PACKAGE; GAMMA 1.6 ELEGANCE N/BACK, 20503 | — | Provisional |
| EFX | Exterior Trim Finish Fusion Gray | — | Reference |
| EFY | P, LOCAL, PACKAGE; GAMMA 1.8CDX EXECUTIVE N/BACK, 20503 | — | Provisional |
| EFZ | P, LOCAL, WHL & TYRE ASM-5J/195 R14 STEEL BRIGHT SILVER, 20503 | — | Provisional |
| EG0 | C, WLB, R WHEELBASE, 161 INCH/4,078 MM this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| EG1 | C, WLB, R WHEELBASE, 148 INCH | 1997 | GM sourced |
| EG2 | P, LOCAL, WHL & TYRE ASM-6J 195/60 VR15 6 SPOKE ALLOY 4 STUD, 20506 | — | Provisional |
| EG3 | P, WLB, R WHEELBASE, 156 INCH this code has more than one documented meaning — filter by year | 1984 | GM sourced |
| EG4 | C, WLB, R WHEELBASE, 157 INCH this code has more than one documented meaning — filter by year | 1990 | GM sourced |
| EG5 | P, WLB, R WHEELBASE, 158 INCH this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| EG6 | P, LOCAL, WHL & TYRE ASM-6J 205/50 VR16 10 SPK ALLOY 5 STUD, 20506 | — | Provisional |
| EG7 | P, WLB, R, WHEELBASE, 236 INCH this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| EG8 | P, WLB, R, WHEELBASE, 186 INCH this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| EG9 | P, WLB, R, WHEELBASE, 152 INCH this code has more than one documented meaning — filter by year | 1997 | 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.