: Adding factory XM radio 2003 DHS

11-17-08, 11:18 AM
Is it possible to do what a dealer does at the dealership and install XM on a car that has the capability (when I key PTY I get a "NO SATELLITE RADIO" message). I've seen the XM receivers for GM on eBay.

RPO UM5, U57 (Bose).

Thanks for your help.

11-20-08, 03:22 AM
If you pull the carpet/trim back on the left side of the trunk do you have a connector there for the XM receiver by chance? It's not a particularly hard install even if you don't.

11-20-08, 11:07 AM
Thanks Cliff. I haven't checked yet, but I did talk to a very knowledgeable Cadillac Tech, who pointed me to the XM Direct kit. I am going to use an audio switch at the RCA output back from the XM tuner, and use it as an aux adapter as well. I hope it all works out as planned!

11-20-08, 09:33 PM

can be done fairly easily