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| 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 1–100 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 |
|---|---|---|---|
| E01 | P, STEPS, ASSIST | 1996 | GM sourced |
| E02 | P, EQC, R, EQUIPMENT ADDITIONAL, CARIBBEAN COUNTRIES | 1996 | GM sourced |
| E03 | P, EQC, R, EQUIPMENT ADDITIONAL, CENTRAL AMERICA COUNTRIES this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E04 | P, EQC, R, EQUIPMENT ADDITIONAL, SOUTH AMERICA COUNTRIES | 1996 | Provisional |
| E05 | P, EQC, R, EQUIPMENT ADDITIONAL, MIDDLE EAST | 1996 | GM sourced |
| E06 | P, EQC, R, EQUIPMENT ADDITIONAL, ARGENTINA | 1996 | GM sourced |
| E07 | P, EQC, R, EQUIPMENT ADDITIONAL, PERU | 1996 | GM sourced |
| E08 | P, EQC, R, EQUIPMENT ADDITIONAL, URUGUAY | 1996 | Provisional |
| E09 | P, EQC, R, EQUIPMENT ADDITIONAL, EUROPE | 1996 | GM sourced |
| E0A | P, FIN, R, FLEET INCENTIVE, AMERICAN CUSTOM COACHWORKS (K), 20424 | — | GM sourced |
| E0B | P, FIN, R, FLEET INCENTIVE, CLASSIC LIMOUSINE, INC. (K), 20108 | — | Provisional |
| E0C | P, FIN, R, FLEET INCENTIVE, DABRYAN COACHBUILDERS, INC (K), 20102 | — | Provisional |
| E0D | P, FIN, R, FLEET INCENTIVE, DESTINY INC (K), 20102 | — | Provisional |
| E0E | P, FIN, R, FLEET INCENTIVE, EAGLE COACH COMPANY (K), 20102 | — | Provisional |
| E0F | P, FIN, R, FLEET INCENTIVE, EMPIRE COACH COMPANY (K), 20102 | — | Provisional |
| E0G | P, FIN, R, FLEET INCENTIVE, INDUSTRY SPECIALTY (K), 20102 | — | Provisional |
| E0H | P, FIN, R, FLEET INCENTIVE, EXECUTIVE COACH BUILDERS (K), 20102 | — | Provisional |
| E0I | P, FIN, R, FLEET INCENTIVE, FEDERAL COACH (K), 20102 | — | Provisional |
| E0J | P, FIN, R, FLEET INCENTIVE, INTERNATIONAL ARMOR/LIMOUSINE MANUFACTURING CO (K), 20102 | — | Provisional |
| E0K | P, FIN, R, FLEET INCENTIVE, KRYSTAL KOACH, INC (K), 20102 | — | Provisional |
| E0L | P, FIN, R, FLEET INCENTIVE, LCW AUTOMOTIVE GROUP (K), 20102 | — | Provisional |
| E0M | P, FIN, R, FLEET INCENTIVE, MOLONEY COACHBUILDERS, INC (K), 20102 | — | Provisional |
| E0N | P, FIN, R, FLEET INCENTIVE, O'GARA-HESS & EISENHARDT ARMORING CO (K), 20102 | — | Provisional |
| E0P | P, FIN, R, FLEET INCENTIVE, PICASSO COACH BUILDERS, CORP (K), 20102 | — | Provisional |
| E0R | P, FIN, R, FLEET INCENTIVE, ROYALE LIMOUSINE MANUFACTURE (K), 20102 | — | Provisional |
| E0S | P, FIN, R, FLEET INCENTIVE, SUPERIOR COACHES/S&S COACH (K), 20102 | — | Provisional |
| E0T | P, FIN, R, FLEET INCENTIVE, VIKING COACHWORKS, INC (K), 20102 | — | Provisional |
| E0U | P, FIN, R, FLEET INCENTIVE, TIFFANY COACHWORKS (K), 20102 | — | Provisional |
| E0V | P, FIN, R, FLEET INCENTIVE, UNITED STATES COACHWORKS (K), 20102 | — | Provisional |
| E0W | P, FIN, R, FLEET INCENTIVE, NATIONAL SPECIALTY CARS LIMITED (K), 20102 | — | Provisional |
| E0X | P, FIN, R, FLEET INCENTIVE, SPECIALTY AUTOMOTIVE INNOVATIONS (K), 20102 | — | Provisional |
| E0Y | P, FIN, R, FLEET INCENTIVE, MENASHA CORPORATION (B/N/U/W-TRK CKGST), 20801 | — | Provisional |
| E0Z | P, FIN, R, FLEET INCENTIVE, GORMAN ENTERPRISE (TRK CKG), 1031 | — | Provisional |
| E10 | P, EQC, R, EQUIPMENT ADDITIONAL, PUERTO RICO | 1996 | GM sourced |
| E11 | P, EQC, R, EQUIPMENT ADDITIONAL, MEXICO this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E12 | P, EQC, R, EQUIPMENT ADDITIONAL, JAPAN this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E13 | P, EQC, R, EQUIPMENT ADDITIONAL, NEW ZEALAND | 1997 | GM sourced |
| E14 | P, EQC, R, EQUIPMENT ADDITIONAL, VENEZUELA | 1999 | GM sourced |
| E15 | P, STEPS, ASSIST, CHROME, 20904 | — | GM sourced |
| E16 | P, STEPS, ASSIST, NATURAL, 20916 | — | GM sourced |
| E17 | Bumper 2.5 Mph | — | Reference |
| E18 | P, HANDLE, I/S, DR, MATT CHROME, 10627 E, 0 | — | GM sourced |
| E19 | Bumper 5.0 Mph | — | Reference |
| E1A | P, FIN, R, FLEET INCENTIVE, LOJACK CORPORATION (N/U/W-TRK CKGMLST), 10921 | — | Provisional |
| E1B | P, FIN, R, FLEET INCENTIVE, SUMMIT CONSULTING (TRK MLST), 11004 | — | Provisional |
| E1C | P, FIN, R, FLEET INCENTIVE, KINDERCARE (U/W-TRK CKGMST), 10827 | — | Provisional |
| E1D | P, FIN, R, FLEET INCENTIVE, CHANEL (N/W-TRK ST), 20918 | — | Provisional |
| E1E | P, FIN, R, FLEET INCENTIVE, ACI ADVANCED CORPORATION (U-TRK CKGML) | 1998 | GM sourced |
| E1F | P, FIN, R, FLEET INCENTIVE, MEDICIS (C/H/N/U/W-TRK CKST), 20724 | — | Provisional |
| E1G | P, HOLDER, FLASHLIGHT | 1998 | GM sourced |
| E1H | P, FIN, R, FLEET INCENTIVE, RJ REYNOLDS (C/H/W-TRK CKGMLST), 11008 | — | Provisional |
| E1J | P, FIN, R, FLEET INCENTIVE, UNIVAR USA, INC (C/D/G/H/W-TRK CKST), 20815 | — | Provisional |
| E1K | P, FIN, R, FLEET INCENTIVE, SUBURBAN PROPANE (TRK CKG) | 1998 | GM sourced |
| E1L | P, FIN, R, FLEET INCENTIVE, VHA, INC (D/H/J/K/N/U/W-TRK CKGMLST), 20812 | — | Provisional |
| E1M | P, FIN, R, FLEET INCENTIVE, SILGAN CONTAINERS MANUFACTURING CORPORATION (W), 11023 | — | Provisional |
| E1N | P, FIN, R, FLEET INCENTIVE, ALTADIS USA, INC. (H/M/N/U/W), 10723 | — | Provisional |
| E1P | P, FIN, R, FLEET INCENTIVE, KV PHARMACEUTICAL CO (B/H/K/U/V/W-TRK ST), 20417 | — | Provisional |
| E1Q | P, FIN, R, FLEET INCENTIVE, DELAVAL (W-TRK CKST), 20411 | — | Provisional |
| E1R | P, FIN, R, FLEET INCENTIVE, METTLER-TOLEDO (H/K/N/U/W-TRK CKGML), 10921 | — | Provisional |
| E1S | P, FIN, R, FLEET INCENTIVE, HMT DBA/ITEQ STORAGE SYSTEMS (W-TRK CKMLST), 516 | — | Provisional |
| E1T | P, FIN, R, FLEET INCENTIVE, WINN DIXIE STORES (C/H/N/U/W-TRK CKGML,TRACKER), 210 | — | Provisional |
| E1U | P, FIN, R, FLEET INCENTIVE, CC SERVICES, INC. (H/U/W-TRK ST), 20611 | — | Provisional |
| E1V | P, FIN, R, FLEET INCENTIVE, SUPERIOR ENERGY SERVICES, INC (-TRK CKGML), 20801 | — | Provisional |
| E1W | P, FIN, R, FLEET INCENTIVE, ALEX'S TRANSPORTATION (TRK CKGML), 11023 | — | Provisional |
| E1X | P, FIN, R, FLEET INCENTIVE, DURA PHARMACEUTICALS (H/W-TRK ST) | 1999 | GM sourced |
| E1Y | P, FIN, R, FLEET INCENTIVE, MFA, INC (C/H/N/W-TRK-CKG), 21001 | — | Provisional |
| E1Z | P, FIN, R, FLEET INCENTIVE, CLARICOM (TRK ML) | 1999 | GM sourced |
| E20 | Door handles, chrome this code has more than one documented meaning — filter by year | 2026 | GM sourced |
| E21 | P, HANDLE, I/S, DR, CHROME | 1999 | GM sourced |
| E22 | P, HANDLE, ASSIST, RR this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E23 | P, GVW, M, GVW RATING, 9,500 LBS this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E24 | P, DRR, M, DOOR SIDE, REAR, HINGED this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| E25 | P, DOOR SIDE REAR LH, SLIDING, MANUAL this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| E26 | P, DOOR SIDE REAR LH, HINGED this code has more than one documented meaning — filter by year | 1999 | GM sourced |
| E27 | P, HANDLE, ASSIST, PASS | 1997 | GM sourced |
| E28 | P, HANDLE, ASSIST this code has more than one documented meaning — filter by year | 1983 | GM sourced |
| E29 | P, BDS, M, BODY EQUIPMENT, ALUMINUM, 16 FT this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E2A | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (ATLANTA) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2B | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (BOSTON) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2C | P, ORDER TO DELIVERY, EXPEDITE TO CUSTOMER, 10914 | — | Provisional |
| E2D | P, RAPID DELIVERY SYS, CENTRAL DISTRIBUTION CENTER (DETROIT) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2E | Bumper, FRT 5 Mph, RR 2.5 Mph | — | Reference |
| E2F | P, RAPID DELIVERY SYS, FORECAST HOLES (E/K/V-TRK CKST) | 1997 | GM sourced |
| E2G | P, RAPID DELIVERY SYS, "FEE" SUPPRESSION (E/K/V-TRK CKST) | 1997 | GM sourced |
| E2H | P, HOLDER, BOTTLE, FRONT | 1999 | Provisional |
| E2I | Ornamentation Lettering, 'eagle', Chrome | — | Reference |
| E2J | P, HOLDER, BOTTLE, REAR | 1999 | Provisional |
| E2K | Ornamentation,lettering,'eagle',gold | — | Reference |
| E2L | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (MILPITAS) (E/K/V-TRKCKST) | 1998 | GM sourced |
| E2M | P, RAPID DELIVERY SYS, POPULAR CONFIGURATIONS THAT FALL BELOW THE MIN (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2N | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (NEW YORK) (E/K/V-TRKCKST) | 1998 | GM sourced |
| E2O | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (ORLANDO) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2P | P, RAPID DELIVERY SYS, POPULAR CONFIGURATIONS (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2Q | Ornamentation,lettering,'ld' | — | Reference |
| E2R | Handle Roof Rail, Luggage Carrier | — | Reference |
| E2S | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (SAN BERNARDINO) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2T | Ornamentation,lettering,'lp' | — | Reference |
| E2U | Ornamentation Lettering, 'ls' | — | Reference |
| E2V | P, RAPID DELIVERY SYS, VISUAL DISPLAY VEHICLE (E/K/V-TRK CKST) | 1998 | GM sourced |
| E2W | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (WASHINGTON D.C.) (E/K/V-TRK CKST) | 1998 | 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.