GM RPO Code Database

Search the code list

24,366

codes on file

51,776

documented meanings

1973–2026

model years

Type a code, or describe the option in words. Every entry says where the meaning came from and which years we hold it for, because an RPO code can mean different things in different eras and a list that hides that is worse than no list.

Code or description

Model year

Sourcing Any From a GM document Corroborated GM option master, dated General reference Provisional

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The full list, A to Z

Showing 401–500 of 643 codes beginning with W. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

Code	Meaning	Years	Sourcing
WD8	Skyhawk T-type	—	Reference
WDA	P, MAR, M, MARKET BRAND, SATURN, 21002	—	GM sourced
WDB	P, CONTROL, ENGINEERING EDIT	1995	GM sourced
WDD	Ornamentation Lettering 'diamond'	—	Reference
WDE	P, IDENTIFICATION, PREPRODUCTION CONTAINMENT VEHICLES, 10809 P 1	—	GM sourced
WDF	P, IDENTIFICATION, EFFECTIVE POINT CONTROL - PIPE CAT DELETION, 20122 E 0	—	Provisional
WDP	Model Conversion Lacrosse CX V6	—	Reference
WDV	P, WARRANTY WAIVER, PARTIAL DEDUCTIBLE	1988	GM sourced
WE2	Appearance Package Tcf Edition	—	Reference
WE4	P, DOOR, DYNAMIC SIDE IMPACT	1997	GM sourced
WE5	P, DOOR, RR COMPT ROOF ACCESS	1997	Provisional
WE6	P, SGR, R, MERCHANDISED PKG, OLDSMOBILE LSS	1998	Provisional
WE7	P, DOOR, RH - DELETE this code has more than one documented meaning — filter by year	1998	GM sourced
WE8	Century T-type	—	Reference
WEA	Appearance Package Z71 Plus	—	Reference
WEH	Sales Package G8 Pack	—	Reference
WEJ	Conversion Name Plt Ltz	—	Reference
WEN	P, PLT, R PLANT CODE, WENTZVILLE, MO, USA this code has more than one documented meaning — filter by year	1997	GM sourced
WF1	P, FLEET PROGRAM, SALES INCENTIVE, 10822 M 4, 4, A	—	GM sourced
WF2	Equipment Engine Appearance, Carbon Fiber Eng Cvr Carbon Fiber Crfm, Carbon Fiber Twr-to-	—	Reference
WF3	Conversion Name Plt 'sri Plus'	—	Reference
WF4	Improved Driveability System(see Option Label)	—	Reference
WF5	Trim,custom	—	Reference
WF6	Molding Group	—	Reference
WF7	Fleetwood Sixty Special(merchandising Option)(6cd69 + Wf7 = 6cg69)	—	Reference
WFF	Ornamentation Lettering '4x4'/'awd'	—	Reference
WFG	Family Code, Wheel FRT Generic	1989	GM dated
WFP	Sales Package Special Edition	—	Reference
WG1	P, SALES, PROCESSING FOR DRIVER POWER SEAT	1998	GM sourced
WG3	Ornamentation Name Plate 'spark 300'	—	Reference
WG4	Model Conversion Grand Sport	—	Reference
WG6	P, SALES PACKAGE, REGAL LSE, 824 E 1	—	Provisional
WG7	P, SALES PACKAGE, REGAL GSE, 824 E 1	—	Provisional
WG8	Sales Package Star Black	—	Reference
WGA	Collection Rdo Equip Receiving Unit, Radio	—	Reference
WGC	Collection Rdo Equip Receiving Unit, Gps	—	Reference
WGD	Collection Rdo Equip Receiving Unit, Radio (delete)	—	Reference
WGG	Identification Effective Point Control - Low Vacuum Hydro Brake Assist	—	Reference
WGJ	Conversion Name Plt 'excite'	—	Reference
WGK	Accessory Interior Trim Kit - Design 1	—	Reference
WGL	Accessory Interior Trim Kit - Design 2	—	Reference
WGM	Accessory Interior Trim Kit - Design 3	—	Reference
WGN	Accessory Filter - Odor & Particulate	—	Reference
WGQ	Redline Edition	2026	GM sourced
WGS	Sales Package Gtr Pack	—	Reference
WGT	Accessory Interior Trim Kit - Design 4	—	Reference
WGV	Appearance Package Lucerne Cxl Special Edition	—	Reference
WH1	Merchandised Pkg Venezuela Trailblazer	—	Reference
WH2	Skyhawk Free Spirit,design II	—	Reference
WH3	Ornamentation Name Plate 'spark Gt'	—	Reference
WH4	Ornamentation Intr, I/p, Air Nozzle, Chrome	—	Reference
WH6	Accessory Cargo Net - Floor Mounted	—	Reference
WH7	P, LAMP PACKAGE, EXTERIOR	1991	GM sourced
WH8	P, SGR, R MERCHANDISED PKG, LESABRE 100TH ANNIVERSARY PKG, 10530 M 4, 4, A	—	Provisional
WH9	Accessory Cargo Area Divider - Vertical	—	Reference
WHB	Equipment Enhanced Electronic Module Signal Speed, Gm-lan	—	Reference
WHC	Family Code, Wheel Color	1988	GM dated
WHF	Family Code, Wheel FRT	1989	GM dated
WHL	Family Code, Wheel this code has more than one documented meaning — filter by year	1988	GM dated
WHM	Family Code, Molding Whl Opening	1989	GM dated
WHN	Appearance Package Cadillac Escalade, Special Edition	—	Reference
WHR	Family Code, Wheel RR	1989	GM dated
WHS	Family Code, Wheel Spare	1989	GM dated
WHU	Ornamentation Lettering, 'sport'	—	Reference
WHV	P, HLG, R HANDLING CHARGE, GMTG TO JANESVILLE VEHICLE MODIFICATION CENTER	1995	GM sourced
WHW	P, TIRES, CUSTOMER PROPERTY, LELAND TRUCK	1991	GM sourced
WHX	P, REF, R REINFORCEMENT, FRAME O/S, INV L TYPE, 80K, SPECIAL this code has more than one documented meaning — filter by year	1999	GM sourced
WHY	P, TIRES, CUSTOMER PROPERTY, RYDER TRUCK	1991	GM sourced
WHZ	P, TIRES, CUSTOMER PROPERTY, BAKER EQUIP	1990	GM sourced
WI2	P, IDENTIFICATION, EFFECTIVE POINT CONTROL - GASOLINE ENGINES, 10220 E 0	—	Provisional
WI3	P, TOOL KIT, SUBSCRIPT IDENTIFICATION MODULE (SIM), 10314 E 0	—	Provisional
WI4	P, IDENTIFICATION, EFFECTIVE POINT CONTROL - SEATS, 11203 E 0	—	Provisional
WI9	P, NPC, M CONVERSION NAME PLT, "XENO", 727 E 0	—	Provisional
WIA	Processing,buy Back-china Plant	—	Reference
WIB	Processing,buy Back-india Plant	—	Reference
WIC	Processing,buy Back-rumania Plant	—	Reference
WID	Processing,buy Back-trans,china Plant	—	Reference
WIE	Processing,buy Back-trans,india Plant	—	Reference
WIF	Processing,buy Back-trans,rumania Plant	—	Reference
WIL	P, PLT, R PLANT CODE, WILMINGTON, DE, USA this code has more than one documented meaning — filter by year	1997	GM sourced
WIR	Family Code, Harness	1990	GM dated
WIS	P, PARTS, NORTH AMERICAN TRUCK/ISUZU COMMONIZATION	1995	GM sourced
WIU	Appearance Package Woody	—	Reference
WIV	Appearance Package Flame	—	Reference
WJ1	P, APP, R APPEARANCE PACKAGE, CAVALIER SPORT, 628 E 3, 3, A	—	GM sourced
WJ2	P, SGR, R MERCHANDISED PKG, "Z24" SEDAN, 726 E 3, 3, A	—	GM sourced
WJ3	Merchandising 'ls' Coupe Package	—	Reference
WJ4	P, APP, R APPEARANCE PACKAGE, VALUE CAVALIER SPORT, 10530 E 3, 3, A	—	GM sourced
WJ5	P, SPP, R PACKAGE, "VALUE LEADER" CHEVY/PONT, 20202 E 3, 3, A	—	GM sourced
WJ6	P, SPP, R PACKAGE, SPECIAL "BLACK TIE EDITION", 20409 E 3	—	GM sourced
WJ7	P, TRIM OVERRIDE, INTERIOR *LEATHER* (TO BE USED BY ALL USERS, BEGINNING 1997 MODEL YR)	1998	GM sourced
WJ8	P, SPP, R PACKAGE, CHEVROLET SPORT, 20620 E 3, 3, A	—	GM sourced
WJC	Ornamentation Intr, Headliner, Printed	—	Reference
WJD	Ornamentation Name Plate 'spark Ev'	—	Reference
WJJ	Panel Center Raven Sapele	—	Reference
WJN	Ornamentation Lettering, 'trax'	—	Reference
WJP	Midnight Edition this code has more than one documented meaning — filter by year	2026	GM sourced
WK0	Sales Package Solar Red Accent	—	Reference
WK1	Custom Midnight Edition, includes (REG) 18 inch Black painted aluminum wheels and (RI8) Duratrac tires	2019	Reference
WK2	Delta Royale Brougham	—	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.