Hello all,
I’ve searched the forum and could not find anything. 2007 Entourage. When we hit a bump in the road, we’ll get a ringing noise from the speakers. Turn the radio off and back on, it goes away, hit bump and it starts again. Dealer told us it needed the rear subwoofer replaced. I did that with no change.

Anyone have any idea what it could be? I want to start checking for a ground issue, but I wonder if it could be a problem with the radio.

Thanks in advance.

 

Might be a good idea to check the antenna mounting and connections..