So my girlfriend has a 08 cobalt sport an her remote died. We put a new battery in it and then the ac button, seat heater, and somethin else stopped working. Basically everything from the radio down. You can turn the climate controls but only heat comes out and you can't change it. I'm not sure what the problem is maybe a blown fuse or soemthing to do with the remote. What do you guys think could be the problem?