Hopefully, someone here can help me. My Problem: 2010 Chevy Cobalt 4 door.. Plain Jane. My husband left his key turned on. Of course dead battery. He gets it jumped, takes off to drive, and it won't shift out of 1st gear, check engine light popped on. From what I've gathered it's the Transmission Control Module? Has anyone ever had this happen? I've looked up the part and it's not priced too bad but, is this something we can do ourselves? I've read something about it needs programmed or something... HELP ME PLEASE.!!! Car was perfectly fine before battery incident. And if you have any other suggestions on what this could possibly be... Help!!!!!!