04 CTS-V, 09 CTS-V
My radio had terrible AM reception and weak XM reception. Had it in the dealer and they said there was a service bulletin and replaced a wiring harness. Got the car back, worked great, went through a carwash and it didn't work again. In fact it had no XM reception after that but it came back later. Does anyone know what this problem is? I called the dealership and they were going to look into it because he thought all the work was done inside the vehicle and didn't know how a carwash (touchless) would affect it. They never called me back. Thanks for any feedback. We lost our local dealership and now the closest one to me is a couple hours away.