why does my radio only get static unless I parked directly next to the tower or station
What is your question?
My radio only gets an FM signal if I am next to a tower or station. No AM stations, only static
What is the solution? My bluetooth connection works perfectly using my smart phone.
How long has your 2011 GMC Terrain had this problem?
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Well that’s certainly indicative of a problem with the radio antenna system.
Google - Crutchfield
Get contact information and talk to one of their audio technicians.