I have a 2006 Cobalt, and since my warranty expired (I have 39,000 miles on her), I have had one problem after another. My biggest is that my doors sometimes don't open. First it was my drivers side. I unlocked the door with the keypad, and although the door was unlocked it wouldn't open from the outside or inside. It lasted for a few days, then started opening again. It was too warm to be frozen. Two weeks later the same thing happened with the passenger door (lasted for a day) and then the day after that was fixed it happened to the drivers door again. Any suggestions? Anyone else had this problem?