04 Stock navigation, which part number?

[LoJac963]

I just deciphered my entire sticker from the glove box.

Use these 2 sites, if the list site doesn't have a code then use the site with the search. Usually the option in all caps refers to the H2.

http://www.rpocodes.com/GM-RPO-codes...0through4.html

http://www.gm-trucks.com/rpo-code-lookup/

I'm happy to say I finally figured out mine is a Lux with the chrome package (which is mostly gone now lol).