I have been googling this problem for 2 days and can't really seem to find anything. I have a 2009 Cobalt ss and when I turn on the lights only the driver side light works all the time along with both running lights but the passenger side headlight does not work. I ripped out both headlights and checked wiring, bulbs and such. When I was messing with the fuses I pulled one out and put a (15) in and it worked. Well when I put the headlight back in and bolted it down, the light was off again and would not work. I have seen some posts that it is the Body Control Module because that can be freaking the electrical system out because along with the headlight problem, sometimes when I get out of the car, the dinging noise from when you leave your keys in the ignition will not go off even though I shut the door and have the keys in my hand. Does anyone know what the problem could be?!?!?! This is driving me nuts and I just got the car and it only has 54,000 miles.