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 101–200 of 931 codes beginning with O. One meaning shown per code — the best-sourced one we hold. Search above for the rest.

Code	Meaning	Years	Sourcing
OCR	P, LOCAL, GM OF EUROPE OCR	1992	GM sourced
OCS	P, LOCAL, GM OF EUROPE OCS	1992	GM sourced
OCT	P, LOCAL, GM OF EUROPE OCT	1992	GM sourced
OCU	P, LOCAL, GM OF EUROPE OCU	1992	GM sourced
OCV	P, LOCAL, GM OF EUROPE OCV	1992	GM sourced
OCW	P, LOCAL, GM OF EUROPE OCW	1992	GM sourced
OCX	P, LOCAL, GM OF EUROPE OCX	1992	GM sourced
OCY	P, LOCAL, GM OF EUROPE OCY	1992	GM sourced
OCZ	P, LOCAL, GM OF EUROPE OCZ	1992	GM sourced
OD0	P, LOCAL, GM OF EUROPE	1992	GM sourced
OD1	P, LOCAL, GM OF EUROPE OD1	1992	GM sourced
OD2	P, LOCAL, GM OF EUROPE OD2, 20528	—	Provisional
OD3	P, LOCAL, GM OF EUROPE OD3, 20724	—	Provisional
OD4	P, LOCAL, GM OF EUROPE OD4	1992	GM sourced
OD5	P, LOCAL, GM OF EUROPE OD5	1992	GM sourced
OD6	P, LOCAL, GM OF EUROPE OD6	1992	GM sourced
OD7	P, LOCAL, GM OF EUROPE OD7	1992	GM sourced
OD8	P, LOCAL, GM OF EUROPE OD8	1992	GM sourced
OD9	P, LOCAL, GM OF EUROPE OD9	1992	GM sourced
ODA	P, LOCAL, GM OF EUROPE ODA	1992	GM sourced
ODB	P, LOCAL, GM OF EUROPE ODB	1992	GM sourced
ODC	P, LOCAL, GM OF EUROPE ODC	1992	GM sourced
ODD	P, LOCAL, GM OF EUROPE ODD this code has more than one documented meaning — filter by year	1992	GM sourced
ODE	P, LOCAL, GM OF EUROPE ODE	1992	GM sourced
ODF	P, LOCAL, GM OF EUROPE ODF	1992	GM sourced
ODG	P, LOCAL, GM OF EUROPE ODG	1992	GM sourced
ODH	P, LOCAL, GM OF EUROPE ODH	1992	GM sourced
ODI	P, LOCAL, GM OF EUROPE ODI	1992	GM sourced
ODJ	P, LOCAL, GM OF EUROPE ODJ	1992	GM sourced
ODK	P, LOCAL, GM OF EUROPE ODK this code has more than one documented meaning — filter by year	1992	GM sourced
ODL	P, LOCAL, GM OF EUROPE ODL	1992	GM sourced
ODM	P, LOCAL, GM OF EUROPE ODM	1992	GM sourced
ODN	P, LOCAL, GM OF EUROPE ODN	1992	GM sourced
ODO	P, LOCAL, GM OF EUROPE ODO	1992	GM sourced
ODP	P, LOCAL, GM OF EUROPE ODP	1992	GM sourced
ODQ	P, LOCAL, GM OF EUROPE ODQ	1992	GM sourced
ODR	P, LOCAL, GM OF EUROPE ODR	1992	GM sourced
ODS	P, LOCAL, GM OF EUROPE ODS	1992	GM sourced
ODT	P, LOCAL, GM OF EUROPE ODT	1992	GM sourced
ODU	P, LOCAL, GM OF EUROPE ODU	1992	GM sourced
ODV	P, LOCAL, GM OF EUROPE ODV	1992	GM sourced
ODW	P, LOCAL, GM OF EUROPE ODW	1992	GM sourced
ODX	P, LOCAL, GM OF EUROPE ODX	1992	GM sourced
ODY	P, LOCAL, GM OF EUROPE ODY	1992	GM sourced
ODZ	P, LOCAL, GM OF EUROPE ODZ	1992	GM sourced
OE0	P, LOCAL, GM OF EUROPE OE0	1992	GM sourced
OE1	P, LOCAL, GM OF EUROPE OE1	1992	GM sourced
OE2	P, LOCAL, GM OF EUROPE OE2	1992	GM sourced
OE3	P, LOCAL, GM OF EUROPE OE3	1992	GM sourced
OE4	P, LOCAL, GM OF EUROPE OE4	1992	GM sourced
OE5	P, LOCAL, GM OF EUROPE OE5	1992	GM sourced
OE6	P, LOCAL, GM OF EUROPE OE6	1992	GM sourced
OE7	P, LOCAL, GM OF EUROPE OE7	1992	GM sourced
OE8	P, LOCAL, GM OF EUROPE OE8	1992	GM sourced
OE9	P, LOCAL, GM OF EUROPE OE9	1992	GM sourced
OEA	P, LOCAL, GM OF EUROPE OEA	1992	GM sourced
OEB	P, LOCAL, GM OF EUROPE OEB	1992	GM sourced
OEC	P, LOCAL, GM OF EUROPE OEC	1992	GM sourced
OED	P, LOCAL, GM OF EUROPE OED	1992	GM sourced
OEE	P, LOCAL, GM OF EUROPE OEE	1992	GM sourced
OEF	P, LOCAL, GM OF EUROPE OEF	1992	GM sourced
OEG	P, LOCAL, GM OF EUROPE OEG	1992	GM sourced
OEH	P, LOCAL, GM OF EUROPE OEH	1992	GM sourced
OEI	P, LOCAL, GM OF EUROPE OEI	1992	GM sourced
OEJ	P, LOCAL, GM OF EUROPE OEJ	1992	GM sourced
OEK	P, LOCAL, GM OF EUROPE OEK	1992	GM sourced
OEL	P, LOCAL, GM OF EUROPE OEL	1992	GM sourced
OEM	P, LOCAL, GM OF EUROPE OEM	1992	GM sourced
OEN	P, LOCAL, GM OF EUROPE OEN	1992	GM sourced
OEO	P, LOCAL, GM OF EUROPE OEO	1992	GM sourced
OEP	P, LOCAL, GM OF EUROPE OEP	1992	GM sourced
OEQ	P, LOCAL, GM OF EUROPE OEQ	1992	GM sourced
OER	P, LOCAL, GM OF EUROPE OER	1992	GM sourced
OES	P, LOCAL, GM OF EUROPE OES	1992	GM sourced
OET	P, LOCAL, GM OF EUROPE OET	1992	GM sourced
OEU	P, LOCAL, GM OF EUROPE OEU	1992	GM sourced
OEV	P, LOCAL, GM OF EUROPE OEV	1992	GM sourced
OEW	P, LOCAL, GM OF EUROPE OEW this code has more than one documented meaning — filter by year	1992	GM sourced
OEX	P, LOCAL, GM OF EUROPE OEX	1992	GM sourced
OEY	P, LOCAL, GM OF EUROPE OEY	1992	GM sourced
OEZ	P, LOCAL, GM OF EUROPE OEZ	1992	GM sourced
OF0	P, LOCAL, GM OF EUROPE OF0	1992	GM sourced
OF1	P, LOCAL, GM OF EUROPE OF1	1992	GM sourced
OF2	P, LOCAL, GM OF EUROPE OF2	1992	GM sourced
OF3	P, LOCAL, GM OF EUROPE OF3	1992	GM sourced
OF4	P, LOCAL, GM OF EUROPE OF4	1992	GM sourced
OF5	P, LOCAL, GM OF EUROPE OF5	1992	GM sourced
OF6	P, LOCAL, GM OF EUROPE OF6	1992	GM sourced
OF7	P, LOCAL, GM OF EUROPE OF7	1992	GM sourced
OF8	P, LOCAL, GM OF EUROPE OF8	1992	GM sourced
OF9	P, LOCAL, GM OF EUROPE OF9	1992	GM sourced
OFA	P, LOCAL, GM OF EUROPE OFA	1992	GM sourced
OFB	P, LOCAL, GM OF EUROPE OFB	1992	GM sourced
OFC	P, LOCAL, GM OF EUROPE OFC	1992	GM sourced
OFD	P, LOCAL, GM OF EUROPE OFD	1992	GM sourced
OFE	P, LOCAL, GM OF EUROPE OFE	1992	GM sourced
OFF	P, LOCAL, GM OF EUROPE OFF	1992	GM sourced
OFG	P, LOCAL, GM OF EUROPE OFG	1992	GM sourced
OFH	P, LOCAL, GM OF EUROPE OFH	1992	GM sourced
OFI	P, LOCAL, GM OF EUROPE OFI	1992	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.