i have an 08 cobalt sport, only had it a month and a half now... purchased it used with 43k on it. anyways, the past 2 weeks it has been acting up, getting worse and worse. it started off with a mild skipping when i would crank the car up and the traction light would come on. then every now and then the service traction or service esc light would come on, along with the skipping. now my car is starting to just cut off on me while im pulling in a parking lot or backing up out of my driveway. it will just cut off! after i crank it back up it seems okay, just still doing the skipping and jerking feeling. now my check engine light is on. lol. of course it has the chevy 100k powertrain warranty so im wondering if this sounds like something that is covered under that?? any advice will help. thanks !