Cobalt SS Gauge Problem - YouTube

so this started happening last night. i turned my car on and it has been doing this ever since. no noticeable ground wires loose or anything, and the car itself runs fine. Also, the radio and head unit do not work at all. is this tune related? PLEASE HELP!

 

There was a post a week ago w the same problem, can't remember what it was though, is assume a short

 

I'm thinking BCM

 

that's actually what my step dad said too...unhooked it...put it back in, works now? so weird. maybe just a bad connection, but it almost seems like too simple of a fix.

 

were is the bcm located?