So I just got done installing my Pioneer p4100dvd into my 09 Pontiac G5. Everything was working fine then I went for a drive and had some problems. My headunit just flips itself onto "mute" and I can't unmute it. Onstar is working on it but no music is playing. I can't get to the audio controls either when it is muted. Turn signals aren't chiming either. Can anyone help me here? Thanks.