I just picked up this car yesterday night and am already in love 79788 original miles and 90 percent original as far as i can tell can you guys help me decode the rpo so we can figure out what i picked up im figuring its not very rare but this is more for my curiousity than anything ill post pics later when she gets a good bath

JG1 - Aluminum Drive Shaft - nice!

8555 U/L Black - also nice!

Thanks for the help! Anyone else?

Here is a really good link to GM RPOs that I found.

http://www.drzero.org/GMC/GM%20RPO%20Master%20List.pdf