hey, I am a newbie and searched for some answers but no luck. If anyone can help, thanks in advance. I have 2005 Cobalt LS sport pkg. I bought pre-owned in 2007 with 29,000 miles. It currently has 53,000 miles and have had no problems. I change oil and filters, tires and brakes. I went to start it and it acted like a dead battery (it is the original), tried it again....nothing. I had lights and radio? I took the key out of ignition went back inside, called AAA. They showed up, the guy says get in and try to start. I put the key in and it fires right up?? He checks battery, starter and alternator and they all check out A-OK? I have been driving it for the last 3 days, no probs. Any ideas?