XM radio issues

[enfuego02]

Hey f5fstop, The XM worked perfectly befor ethe BCM issue. I have a after market pioneer nav system with the after market XM module since the factory unit could not be connected to the new radio.
The reason why I brought the car into hummer originally was that the rear defroster wasn't working. They said it was a bad BCM module. Needless to say after they installed the new one they think the guys who installed my radio system cut into one of the wires going into the BCM module. So supposedly Hummer replaced that wire. Anyways the XM was working fine for a couple of days until I heard the missing left channel last night.
Now it's gets interesting. i went into my car today it was working fine. I went to a store and when I got back the XM was again playing out of the right channel only.
I'm assuming it must be a loose connection or the unit is going. I got it all installed at Circuit city and I never had a problem. This all started after the servicing at the Hummer deal.
I appreciate all your help f5fstop....
Thanks