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

Search

The full list, A to Z

Showing 601–700 of 959 codes beginning with A. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

Code	Meaning	Years	Sourcing
ALK	Option Package Selection 11	—	Reference
ALM	*all Makes	—	Reference
ALN	Identification Effective Point Control - Transmission Upgrade	—	Reference
ALP	Altered Vehicle Altered Vehicle	—	Reference
ALU	Seat RR Folding, Headrest	—	Reference
ALV	Sensor Indicator Inflatable Restraint, FRT Pass/child Presence Detector -- Delete	—	Reference
ALZ	Altered Vehicle Restricted Vehicle Content	—	Reference
AM0	P, SEAT RR, FLEXIBLE CONFIGURATION this code has more than one documented meaning — filter by year	1999	GM sourced
AM1	P, CONTROL, SEAT, MANUAL LUMBAR, DRIVER	1993	GM sourced
AM2	P, CONTROL, SEAT, MANUAL LUMBAR, PASS	1993	GM sourced
AM3	P, CONTROL, SEAT, POWER LUMBAR, MASSAGE this code has more than one documented meaning — filter by year	1997	GM sourced
AM4	P, SEAT RR, SPLIT BACK, FOLDING, CUSTOM	1998	GM sourced
AM5	P, STS, M, SEAT, FRT SPLIT, 3 PASS, 6 WAY ADJ, 2 WAY LUMBAR	1987	GM sourced
AM6	P, STS, M, SEAT, FRT SPLIT BENCH this code has more than one documented meaning — filter by year	1996	GM sourced
AM7	P, SEAT RR, FOLDING this code has more than one documented meaning — filter by year	1995	GM sourced
AM8	P, SEAT RR, BENCH, SPLIT STOWABLE, 20820 this code has more than one documented meaning — filter by year	—	GM sourced
AM9	P, SEAT RR, SPLIT BACK, FOLDING this code has more than one documented meaning — filter by year	1995	GM sourced
AMA	Seat RR Split Back, Folding, Headrest	—	Reference
AMB	P, VEHICLE, AMBULANCE	1996	GM sourced
AMF	4 additional keyless remote transmitters with internal pre-cut keys	2026	GM sourced
AMG	Seat RR Bench, 60/40 Split Back, Folding	—	Reference
AMM	Adjuster FRT ST Power, 6 Way, Driver	—	Reference
AMN	Seat RR Split, Folding, 40/60, Tumble, Headrest	—	Reference
AMO	Interior Trim Config #52	—	Reference
AMP	Seat Third Row Folding, Tumble, Headrest	—	Reference
AN0	P, SBR, R, ADJUSTER, SEAT, MANUAL, 6 WAY, LUMBAR this code has more than one documented meaning — filter by year	1998	GM sourced
AN1	P, SEAT RR, BENCH this code has more than one documented meaning — filter by year	1990	GM sourced
AN2	P, SCI, R, SEAT CHILD, INTEGRAL this code has more than one documented meaning — filter by year	1993	GM sourced
AN3	Seats, front bucket with leather-appointed seating this code has more than one documented meaning — filter by year	2019	Reference
AN4	P, RESTRAINT PROVISIONS, CHILD	1987	GM sourced
AN5	P, SCI, R, SEAT CHILD, INTEGRAL-DUAL	1994	GM sourced
AN6	P, ADJUSTER RR, INTERMEDIATE SEAT, MANUAL, LUMBAR this code has more than one documented meaning — filter by year	1996	GM sourced
AN7	P, SCI, R, SEAT CHILD, BOOSTER, NON INTEGRAL, W/O BELTS	1998	Provisional
AN8	P, STS, M, SEAT, FRT BKT, LOW BACK, DRIVER this code has more than one documented meaning — filter by year	1988	GM sourced
AN9	P, SCI, R, SEAT CHILD, BOOSTER, INTEGRAL, W/O BELTS	1997	GM sourced
ANA	C, EQUIPMENT, CLOTH INSERT, DRIVER SEAT this code has more than one documented meaning — filter by year	1998	GM sourced
ANB	P, WINDOW, DEEP TINT ON RR SIDE DOORS - DELETE	1998	GM sourced
ANC	P, SALES PACKAGE, SHUTTLE BUS this code has more than one documented meaning — filter by year	1998	GM sourced
AND	P, SALES PACKAGE, 17" TIRES & WHEELS, 20227	—	GM sourced
ANE	P, CREDIT, L/GLASS-KEY OPERATED UNLOCKING, 920	—	Provisional
ANF	P, COLOR OVERRIDE, SEAT TRIM (BLACK) this code has more than one documented meaning — filter by year	1996	GM sourced
ANG	Restraint,underseat Cargo	—	Reference
ANH	Restraint System Seat,inflatable,drvr & Pass Frt,frt ST Side & Rf,knee this code has more than one documented meaning — filter by year	—	Reference
ANI	P, FIN, R, FLEET INCENTIVE, BENCO DENTAL (U-TRK GMLST), 10924	—	Provisional
ANJ	P, GOT, R, WINDOW TINTED, EXPORT COMPLIANT, NON-DEEP this code has more than one documented meaning — filter by year	1995	GM sourced
ANK	Seat Drivers,air,low Back Vinyl,bostrom 710e this code has more than one documented meaning — filter by year	—	Reference
ANL	P, SALES PACKAGE, AIR DEFL, FOG LP this code has more than one documented meaning — filter by year	1997	GM sourced
ANM	P, SALES PACKAGE, FIRE AND RESCUE this code has more than one documented meaning — filter by year	1998	GM sourced
ANN	P, HLG, R, HANDLING CHARGE, LINDEN ASM TO HANOVER COMMERCIAL VEHICLES,, ELKHART,IN AND RETURN TO FT WAYNE ASSEMBLY, 10111	—	Provisional
ANO	P, HLG, R, HANDLING CHARGE, SHREVEPORT ASM TO HANOVER COMMERCIAL VEHICLES, ELKHART,IN AND RETURN TO FT WAYNE ASSEMBLY, 10111	—	Provisional
ANP	P, EQUIPMENT, CAMPING PACKAGE, TENT & MATTRESS, 21015	—	GM sourced
ANQ	Alaskan Snow Plow Special Edition this code has more than one documented meaning — filter by year	2026	GM sourced
ANS	P, EQUIPMENT, PKG, MUD FLAPS, HOOD PROTECTOR, S/WDO DEFLECTOR, 21015	—	GM sourced
ANT	Family Code, Antenna	1988	GM dated
ANU	Chassis Equipment 20' Tires & Wheels	—	Reference
ANW	Sales Package Air Defl, Fog Lp, And Tow Hooks	—	Reference
ANX	Sales Package Shuttle Bus-deluxe	—	Reference
ANY	P, EQUIPMENT, CARGO RAILS AND TIE DOWNS, 21015	—	GM sourced
ANZ	P, STS, M, SEAT, FULL WIDTH this code has more than one documented meaning — filter by year	1986	GM sourced
AO1	P, FIN, R, FLEET INCENTIVE, GUARDIAN INDUSTRIES CORP (C/H/N/U/W-TRK CKGMLST), 20612	—	Provisional
AO2	P, FIN, R, FLEET INCENTIVE, MIDWAY CAR RENTAL (C/D/H/J/K/N/S/U/W-TRK CKGMLST), 20801	—	Provisional
AO3	P, FIN, R, FLEET INCENTIVE, SONY PICTURES STUDIO (B/C/D/F/G/H/K/N/U/W/Y, -TRK CKGMLST), 20918	—	Provisional
AO4	P, FIN, R, FLEET INCENTIVE, W.T. BILLARD (TRK GST), 823	—	Provisional
AO5	P, FIN, R, FLEET INCENTIVE, PAVESTONE COMPANY (H/W-TRK CKGST), 20214	—	Provisional
AO6	P, FIN, R, FLEET INCENTIVE, WASHINGTON FEDERATION OF STATE EMPLOYEES, (W-TRK CKST), 20724	—	Provisional
AO7	P, FIN, R, FLEET INCENTIVE, FLINT ENERGY/CONSTRUCTION CO. (TRK CK), 828 this code has more than one documented meaning — filter by year	—	GM sourced
AO8	P, FIN, R, FLEET INCENTIVE, VIASOURCE, INC. (TRK GMLST), 828 this code has more than one documented meaning — filter by year	—	GM sourced
AO9	P, FIN, R, FLEET INCENTIVE, CHARMING SHOPPERS, INC. (C/H/U/W-TRK ST), 828	—	Provisional
AP0	P, RESTRAINT, SEAT, SIDE INFLATABLE, DRIVER	1998	Provisional
AP1	P, RESTRAINT, SEAT, SIDE INFLATABLE, PASS	1998	Provisional
AP2	P, RESTRAINT, RR SHOULDER BELT, ANCHOR - DELETE this code has more than one documented meaning — filter by year	1998	GM sourced
AP3	P, LCE, R, LOCK CONTROL, ENTRY, REMOTE, KEYLESS ENTRY, START, 118 E, 3	—	GM sourced
AP4	P, NET, CONVENIENCE - DELETE	1999	GM sourced
AP5	P, LOCK CONTROL, REMOTE, KEYLESS ENTRY, PASSIVE, 119 E, 0	—	GM sourced
AP6	P, SEAT RR, - DELETE (USE OPTION ATZ) this code has more than one documented meaning — filter by year	1998	GM sourced
AP7	P, LCE, R, LOCK CONTROL, ENTRY, REMOTE, KEYLESS START, PASSIVE, 118 E, 0	—	GM sourced
AP8	P, RESTRAINT, CARGO, NET, LH	1984	Provisional
AP9	Cargo net	2019	Reference
APA	Equipment,transmission,gearshift Detent	—	Reference
APB	Seat Passenger Enlarged, Two Passengers	—	Reference
APC	P, PROVISIONS, FRT BUCKET SEATING this code has more than one documented meaning — filter by year	1993	GM sourced
APD	Doors, power open/close this code has more than one documented meaning — filter by year	2026	GM sourced
APF	Seat RR Military Personnel, Folding	—	Reference
APG	Control Seat, Power Lumbar, LH	—	Reference
APH	Control Seat, Power Lumbar, RH	—	Reference
APJ	C, PROVISIONS, PROP SHF HNGR 93.0 DEG, 1027	—	GM sourced
APK	C, PROVISIONS, PROP SHF HNGR 95.75 DEG, 1027	—	GM sourced
APL	P, PAS, R, SEAT PASSENGER, - DELETE this code has more than one documented meaning — filter by year	1998	GM sourced
APM	Family Code, Adjuster Pass ST	1990	GM dated
APN	Seat Passenger Enlarged, Two Passengers	—	Reference
APP	Family Code, Appearance Package	1988	GM dated
APQ	P, FIN, R, FLEET INCENTIVE, EQUILON ENTERPRISES (C/H/L/N/U/W-TRK CKGMLPST)	1999	GM sourced
APR	P, SALES INCENTIVE, WORK TRUCK 2500 this code has more than one documented meaning — filter by year	1994	GM sourced
APS	P, SALES PROCESSING OPT, ELECTRICAL CONVENIENCE ITEMS "GLS"	1994	Provisional
APT	P, SALES PROCESSING OPT, ELECTRICAL CONVENIENCE ITEMS "GL"	1994	Provisional
APW	Window Power, Not Desired	—	Reference
APY	Net Convenience, Lateral Mesh	—	Reference
AQ0	P, RESTRAINT, HEAD, RR SEAT, VINYL COVERED, TWO, OUTSIDE, 10529 E, 0	—	GM sourced
AQ1	P, PAS, R, SEAT PASSENGER, FRT BKT, LOW BACK this code has more than one documented meaning — filter by year	1989	GM sourced
AQ2	P, NET, CONVENIENCE, PACKAGE this code has more than one documented meaning — filter by year	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.