Ok, so I drove to the gas station, come back and an hour later my car won't start, you can hear the fuel pump running it just won't turn over. The did says power steering and reduced power mode. There's no leaking fluid, any ideas? Thanks in advance.

 

sounds like it went into limp mode?

 

something similar happened to me and i took it to the dealer and they said it was the theft deterrent system or something like that and the car wouldnt start but thats my only guess of what that could be

 

well tried again and it started. Reset the edu and it started up fine. Turned it off , back to how it was before not starting, may be the altenator I m thinking?

 

Check your fuse box. If it's complaining about PWR STR it generally means a bad ground somewhere in the electrical system. The last Cobalt I heard of that had that problem simply had a loose connector in his fuse box.