Having a real issue with my radio in my 2010 Ram Sport . About 20% of the time my AM/FM doesn't work. I can switch to both and the radio displays the stations but there no sound and the frequency can't be changed. The SAT, HD and CD work, usually. Sometimes I am listening to the radio and it disappears and other times if I switch to AM/FM they are gone. The dealership has replaced the radio 4 times and the amplifier once. I have taken it in when the radio wasnt working but they said there wer no "codes" when they ran a test.
The radio may start working if I shut the vehicle off and start it again but sometimes it may last a couple of trips. Two radios ago my SAT, HD and CD wouldnt work.
Any ideas, the dealership has given up??