Did you try reading the DTC codes with something just to see what it says? I have had too many radio problems, but they all ended up being related to equipment from Alpine and after market XM radio tuners. Went to Pioneer, and it all went away.
2013 JK Rubicon Black Soft Top
2.5 Teraflex Budget Boost, 37 inch Falken Wild Peak AT's, Smitty Bilt Rocker Guards, Smittybilt Stinger, XRC8 Comp winch, OR Fab Rotopax rear tire carrier