One problem related to turn signal switch has been reported for the 2008 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Cobalt based on all problems reported for the 2008 Cobalt.
I first had noticed my front passenger speaker would cut in and out. It didn't matter if the car was stationary or if I was driving. The following week I was driving through the parking lot of my job and the doors locks started locking and unlocking rapidly by themselves. And now they rarely ever do either when I try and push the lock buttons. So they either have to stay locked or unlocked depending the mood of the car. The following week I had a gas leak and had to have it serviced because that is very dangerous. The mechanic told me that there was a recall on that plastic piece to fuel system but only in southern states and I live in the north. And not to long after that my turn signal switch wouldn't stay on or it wouldn't shut off by it's self. Also dangerous trying to hold switch on while making a turn.