My 06 cobalt ss has xm radio built in but when I got service , can't hear even with the volume all the way up, it sounds real low,, now I put the radio on a regular FM station, volume is great. WTD?
I had issues with my XM radio when I got my new GMC. I called from my cell phone while sitting in the car and the tech at the XM radio reprogrammed their computer and now it works just fine. You will need the radio code, the vehicle ser#.
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