Hi,
New to this forum, and maybe this question has been asked before, but I havn't seen it so far. I recently wanted to upgrade to a oem gps/dvd unit and purchased part no 25797978 off ebay, but the cd/dvd player had an issue reading the disc, so I sent it back. The supplier is asking me what part no will fit my truck. Any help on what part no will also work besides the 25797978, or is the the only part that I should try to find? The truck already has the bose amp from the stock sytem. I also purchased the nav disk 4.0 version gm pn 25974486U.

thanks!