I have a 2007 Chevrolet Impala LTZ. I bought it used. I can not seem to get the radio to switch over to XM radio. I have the antenna on my roof, and the trunk has the XM receiver (or what seems to be)...I have it activated on a 2 month trial basis and nothing comes through..I push Band and it goes between AM and FM.
Linked below is a picture of the car (you can see the XM antenna)
and
The XM receiver that is in my trunk
Linked below is a picture of the car (you can see the XM antenna)

and
The XM receiver that is in my trunk
