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A Place for Factory RPO Lists and Definitions

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1.6K views 10 replies 6 participants last post by  GrizChev  
#6 ·
GM has recycled a lot of RPO codes over the years. For instance what LT1 engine RPO means depends on the year.

The lists you really want are the ones from the parts books for your model & years.

I have light truck parts books from 1966 all the way through 1993 when they stopped putting them on paper. I scanned all of them and gave copies to GMPartsWiki.com
Ian has put together a massive library of Parts books.

I have the 94 through 2001 CK ST G M & P Parts books on fiche. I know they published parts books on fiche up to the 2010-2013 ish range.
 
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