I have a 2008 Cobalt LT and for some reason I can not get the power locks working on it from inside the car. I have found and changed the fuse and so has the dealership and it just stops working after a few weeks. The same thing with the remote starter and the cigarette lighters. I have changed the fuses for all of them and it lasts 1-2 weeks then stops working. The dealership can not find any loose wiring, crossed wiring or anything like that. The power windows and power mirrors work fine. And I can lock and unlock the doors from the key fob. but I can not use the Key Fob to start the car with the starter which is factory istalled (as far as I know). I have changed the battery on the key fob and I have had them re-program it. But nothing works more then a few weeks. Any ideas?