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Search took 0.00 seconds. Search: Posts Made By: markopolo

Forum: General Discussion Forum

10-19-2013, 12:06 PM

Replies: 4

GM RPO code lookup and decoder

Views: 33,431

Posted By markopolo

Re: GM RPO code lookup and decoder

Same here re: the rear axle / differential. Mine is the 10.5" ring gear 14 bolt GM casing and I know the ratio but that is all I have found out.
RPO code G80 would indicate that it is a "locker"...

Forum: General Discussion Forum

10-16-2013, 03:43 PM

Replies: 4

GM RPO code lookup and decoder

Views: 33,431

Posted By markopolo

Re: GM RPO lookup and decoder

Just bumping this post up. I find decoding the RPO codes sticker on the van to be very useful.
You only need to do it once and save the results. I have a text file of the results that I refer to...

Forum: General Discussion Forum

05-22-2011, 05:26 PM

Replies: 4

GM RPO code lookup and decoder

Views: 33,431

Posted By markopolo

GM RPO code lookup and decoder

Online GM RPO lookup and decoder here:

https://www.cadillacfaq.com/rpo/index.php

Very nice! Enter all your RPO codes from the Service Parts Identification (SPID) sticker on your GM vehicle. ...

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