Hi! I have a 2011 traverse. recently i noticed that my door chime was low. The sound is on high. Now the door chime, seatbelt chime, and back up camera beep are so low that I can not hear them if at all. I also noticed that my radio sounded as if a speaker was out, but the next day it was fine. my husband thinks it may be my alternator going out or a fuse.

Can anyone please help me.