okay guys, I have a 2008 Cobalt, and I was driving home one day and bam it shut off. I coasted home (thank god I was just leaving a local gas station) and I got home and it wouldn't turn over at all. I had every message come on on my dash, low power steering, low fuel, battery save mode, check charge sys, door ajar, every possible message came on lol. Radio does not turn on, lights work, but it just won't turn over. only have one car so I haven't tried jumping it. could it be a battery? alternator? ECM? someone please help lol

 

If all of that comes on then your battery is low and if your battery is low it's your alternator. but get it tested.