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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 101–200 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 |
|---|---|---|---|
| E2X | Ornamentation Lettering, 'vg' | — | Reference |
| E30 | P, BDS, M, BODY EQUIPMENT, ALUMINUM, 14 FT X 96 IN this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E31 | P, BDS, M, BODY EQUIPMENT, STEEL, 10 FT, INCR WIDTH this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E32 | P, BDS, M, BODY EQUIPMENT, FORWARD CONTROL VAR 3 this code has more than one documented meaning — filter by year | 1985 | GM sourced |
| E33 | P, BDS, M, BODY EQUIPMENT, FORWARD CONTROL VAR 4 this code has more than one documented meaning — filter by year | 1985 | GM sourced |
| E34 | P, BDS, M, BODY EQUIPMENT, STEEL, 10 FT, STD WIDTH this code has more than one documented meaning — filter by year | 1985 | GM sourced |
| E35 | P, PBI, R, PICKUP BOX INNER, STEEL | 1994 | GM sourced |
| E36 | P, PBI, R, PICKUP BOX INNER, LT COMPOSITE this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| E37 | P, PBI, R, PICKUP BOX INNER, DK COMPOSITE this code has more than one documented meaning — filter by year | 1994 | GM sourced |
| E38 | P, BDS, M, BODY EQUIPMENT, STEEL, 12 FT X 96 INCH this code has more than one documented meaning — filter by year | 1996 | GM sourced |
| E39 | P, BDS, M, BODY EQUIPMENT, PLATFORM W/SIDE & RR FOLD DOWN this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E3A | P, HANDLE, ASSIST, LH, (W/SUN GLASS BOX), 906 E, 0 | — | Provisional |
| E3B | P, HANDLE, ASSIST, RH, (W/SUN GLASS BOX), 906 E, 0 | — | Provisional |
| E3C | P, COVER, EXHAUST, REAR PIPE, 1220 E, 0 | — | GM sourced |
| E3D | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (DALLAS) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E3E | P, HANDLE, O/S, L/GATE, R/CMPT, CHROME, 906 E, 0 | — | GM sourced |
| E3F | P, PANEL, INST, INSERT, CHAMPAGNE, 10612 | — | Provisional |
| E3H | Handle I/s, Dr, Silver | — | Reference |
| E3M | P, RAPID DELIVERY SYS, CENTRAL DISTRIBUTION CENTER (MORAINE) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E3N | Handle Assist, Console, Pass | — | Reference |
| E3O | P, RAPID DELIVERY SYS, OLD ORDERS (-TRK ST) | 1996 | GM sourced |
| E3P | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (PHOENIX) (E/K/V-TRK CKST) | 1998 | GM sourced |
| E3Q | Handle,rear,rh | — | Reference |
| E3T | Handle I/s, Door Release | — | Reference |
| E3U | P, FIN, R, FLEET INCENTIVE, QUEST DIAGNOSTICS (D/J/N/S/U/W-TRK CKGST), 20416 | — | Provisional |
| E3V | P, FIN, R, FLEET INCENTIVE, SOCK TRANSPORTATION (-TRK G), 20416 | — | Provisional |
| E3W | P, FIN, R, FLEET INCENTIVE, WESTERN PEST SERVICES (H/N/U/W-TRK CKGMLST), 20416 | — | Provisional |
| E3X | P, FIN, R, FLEET INCENTIVE, GLASSMASTER (-TRK CKG), 20416 | — | Provisional |
| E3Y | P, FIN, R, FLEET INCENTIVE, D.I. SUPPLY, INC. (B/J/N/U/W-TRK CKGMLST), 20416 | — | Provisional |
| E3Z | Carbon Fiber Composite Bed | 2026 | GM sourced |
| E40 | P, COVER, REAR FASCIA, EXTENDABLE, PROTECTIVE, 10720 E, 0 | — | GM sourced |
| E41 | P, IDENTIFICATION, LABEL, MANUFACTURING-DATE, MONTH/YEAR, 10727 E, 0 | — | Provisional |
| E42 | P, IDENTIFICATION, LABEL, MANUFACTURING-DATE, YEAR, 10727 E, 0 | — | Provisional |
| E43 | P, EQUIPMENT, I/P, FORWARD CONTROL, DILL PRODUCTS this code has more than one documented meaning — filter by year | 1997 | GM sourced |
| E44 | P, BDS, M, BODY EQUIPMENT, FORWARD CONTROL, UNION CITY BODY this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| E45 | P, COVER, CONVERTIBLE TOP, PROTECTIVE | 1992 | GM sourced |
| E46 | P, EQC, R, EQUIPMENT ADDITIONAL, ECUADOR | 1999 | GM sourced |
| E47 | P, BDS, M, BODY EQUIPMENT, FORWARD CONTROL, GRUMMIN-OLSON, TULARE, CA this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E48 | P, COVER, RADIATOR GRILLE OPG this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E49 | P, BDS, M, BODY EQUIPMENT, COMMERCIAL CARGO BOX | 1998 | Provisional |
| E4A | P, PCD, R, EQUIPMENT CKD, REPUBLIC OF SOUTH AFRICA (CKD) | 1999 | Provisional |
| E4B | P, PCD, R, EQUIPMENT CKD, RUSSIA (CKD) | 1999 | GM sourced |
| E4C | P, PCD, R, EQUIPMENT CKD, UKRAINE (CKD) | 1999 | Provisional |
| E4D | P, PCD, R, EQUIPMENT CKD, TURKEY (CKD) | 1999 | Provisional |
| E4E | P, PCD, R, EQUIPMENT CKD, EGYPT (CKD) | 1999 | GM sourced |
| E4F | P, PCD, R, EQUIPMENT CKD, TAIWAN (CKD) | 1999 | GM sourced |
| E4G | P, PCD, R, EQUIPMENT CKD, INDIA (CKD) | 1999 | GM sourced |
| E4H | P, PCD, R, EQUIPMENT CKD, HUNGARY (CKD) | 1999 | Provisional |
| E4I | P, SPA, M, ADAPTER, SPEEDO (E4I) | 1991 | GM sourced |
| E4J | P, PCD, R, EQUIPMENT CKD, POLAND (CKD) | 1999 | GM sourced |
| E4K | P, PCD, R, EQUIPMENT CKD, VENEZUELA (CKD), 10523 E, 0 | — | GM sourced |
| E4L | P, PCD, R, EQUIPMENT CKD, INDONESIA (CKD), 20114 E, 5 | — | Provisional |
| E4M | P, ORNAMENTATION, LETTERING "GSI" LATERAL, ABOVE, 11005 E, 0 | — | Provisional |
| E4N | P, SALES PACKAGE, EQUIPMENT-GSI, 11005 E, 0 | — | Provisional |
| E4P | P, RAPID DELIVERY SYS, REGIONAL DISTRIBUTION CENTER (DEARBORN) (E/K-TRK CKST) | 1998 | GM sourced |
| E4Q | P, SALES PACKAGE, EQUIPMENT - FUN, 20517 E, 0 | — | Provisional |
| E4R | P, SALES PACKAGE, EQUIPMENT - FASHION, 20517 E, 0 | — | Provisional |
| E4S | Ornamentation Lettering 'ex', Emblem | — | Reference |
| E4T | Equipment Ckd Thailand/complete Knockdown | — | Reference |
| E4U | P, SALES PACKAGE, EQUIPMENT - LUXURY, 1016 E, 0 | — | Provisional |
| E4V | Equipment Ckd China/ckd | — | Reference |
| E4W | Equipment Ckd Vietnam (ckd) | — | Reference |
| E50 | P, DRS, R, DOOR RR, DELETE, 615 E, 0 | — | GM sourced |
| E51 | P, DRS, R, DOOR RR, TAILGATE | 1992 | GM sourced |
| E52 | P, BDS, M, BODY EQUIPMENT, ONE PIECE LIFT GATE WITH LIFT GLASS this code has more than one documented meaning — filter by year | 1993 | GM sourced |
| E53 | P, BDS, M, BODY EQUIPMENT, COMMERCIAL DUMP TRUCK BOX | 1998 | Provisional |
| E54 | P, BDS, M, BODY EQUIPMENT, RR DOOR, W/END GATE WINDOW this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| E55 | P, BDS, M, BODY EQUIPMENT, END GATE this code has more than one documented meaning — filter by year | 1989 | GM sourced |
| E56 | P, BDS, M, BODY EQUIPMENT, PLATFORM STAKE RACK CONVERSION this code has more than one documented meaning — filter by year | 1992 | GM sourced |
| E57 | P, BDS, M, BODY EQUIPMENT, FORWARD CONTROL, GRUMMIN-OLSON, STURGIS, MI this code has more than one documented meaning — filter by year | 1998 | GM sourced |
| E58 | P, DOOR, ELECTRIC, SLIDING, SI, RH | 1997 | GM sourced |
| E59 | P, DOOR, ELECTRIC, SLIDING, SI, LH | 1997 | GM sourced |
| E5A | P, CHASSIS, RETUNED, 315 E, 0 | — | GM sourced |
| E5B | P, LOCAL, S. AFRICA-DELTA MOTORS (E5B), 20430 | — | Provisional |
| E5C | P, LOCAL, S. AFRICA-DELTA MOTORS (E5C), 20430 | — | Provisional |
| E5D | Accessory Assist Handles - Interior | — | Reference |
| E5E | P, LOCAL, S. AFRICA-DELTA MOTORS (E5E), 20430 | — | Provisional |
| E5F | P, LOCAL, S. AFRICA-DELTA MOTORS (E5F), 20430 | — | Provisional |
| E5G | P, LOCAL, S. AFRICA-DELTA MOTORS (E5G), 20430 | — | Provisional |
| E5H | Accessory Grille Trim - Alternate Finish 2 | — | Reference |
| E5I | P, LOCAL, S. AFRICA-DELTA MOTORS (E5I), 20430 | — | Provisional |
| E5J | P, LOCAL, S. AFRICA-DELTA MOTORS (E5J), 20430 | — | Provisional |
| E5K | Accessory Grille Trim - Alternate Finish 1 | — | Reference |
| E5L | P, LOCAL, S. AFRICA-DELTA MOTORS (E5L), 20430 | — | Provisional |
| E5M | P, LOCAL, S. AFRICA-DELTA MOTORS (E5M), 20430 | — | Provisional |
| E5N | P, LOCAL, S. AFRICA-DELTA MOTORS (E5N), 20430 | — | Provisional |
| E5O | P, LOCAL, S. AFRICA-DELTA MOTORS (E5O), 20430 | — | Provisional |
| E5P | P, LOCAL, S. AFRICA-DELTA MOTORS (E5P), 20430 | — | Provisional |
| E5Q | P, LOCAL, S. AFRICA-DELTA MOTORS (E5Q), 20430 | — | Provisional |
| E5R | P, LOCAL, S. AFRICA-DELTA MOTORS (E5R), 20430 | — | Provisional |
| E5S | P, LOCAL, S. AFRICA-DELTA MOTORS (E5S), 20430 | — | Provisional |
| E5T | P, LOCAL, S. AFRICA-DELTA MOTORS (E5T), 20430 | — | Provisional |
| E5U | P, LOCAL, S. AFRICA-DELTA MOTORS (E5U), 20430 | — | Provisional |
| E5V | P, LOCAL, S. AFRICA-DELTA MOTORS (E5V), 20430 | — | Provisional |
| E5W | P, LOCAL, S. AFRICA-DELTA MOTORS (E5W), 20430 | — | Provisional |
| E5X | P, LOCAL, S. AFRICA-DELTA MOTORS (E5X), 20430 | — | Provisional |
| E5Y | P, LOCAL, S. AFRICA-DELTA MOTORS (E5Y), 20430 | — | Provisional |
| E5Z | P, SPA, M, ADAPTER, SPEEDO - DELETE | 1998 | GM sourced |
| E60 | P, BODY HEIGHT, INCR GROUND CLEARANCE | 1998 | Provisional |
| E61 | P, DRS, R, DOOR RR, LIFTGATE, POWER, 404 E, 0 | — | 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.