I started my cobalt earlier and the battery light/Oil light came on. I just changed the head gasket about a month ago so I figured it was nothing. Well once I started driving the car, it had no power at all. When I push to the pedal to WOT, the car goes no where as if I have it at regular throttle. I dont know whats going on with the car now! any suggestion would be helpful! the car has no power and will barely stay running!

 

did you check your oil? Could be that it's low on oil and went into limp mode.