I have a 2011 Chevy Suburban.

I recently had some issues with the computer system in the car and had to get it replaced.

The XM option is not showing up on the Band button, only the FM and AM radios.

Is there anything I can do myself to fix this problem without having to take it in to the dealer?

Thanks in advance!

 

there can be more than 30 computer modules on this truck. Exactly what was replaced and why?

 

I would suspect it was the BCM and the programming for the option XM wasn't enabled... if you had it before and now its gone, there should be no extra charge for re-enabling the feature...
Make sure to check all of your radio setting options to make sure its not just disable via the radio....