Maybe posting it in the wrong spot. Feel free to move.

I have a 2004 g35 Coupe with the factory sirius XM sat radio and all of a sudden it says either no signal or just acquires for a long time, finds the station and plays for 15 sec then cuts out again. Anyone had this before? Please help

 

You arent the only one. It's the equivalent of the blue screen of death on Windows. Turning the car off and on seems to reboot it. Mine does it rarely. Havent been able to discern any pattern to it and haven't worried about it too much.