This is a hard one to figure out. I have a 2009 Malibu (non Bose) I installed my X920 bt last week and everything worked great. Yesterday I installed my amp and sub and everything was working great until last night when I left work and put my hi beams on and the radio went nuts. So this is what I get I start the car and everything is good and when I use the hi beams it turns the sound off I still get the beep and it shows the volume going up but no sound. If I go from radio to XM I can get a little sound out of one of the speakers. The only way to get everything back is to reboot the system by