The smell of gas fumes coming from my exhaust/ also having trouble starting after car sits overnight. Installed new battery and it's still doing the same thing. Starts fine after driving a bit which is why I thought it was the battery not holding a charge for longer periods. Any advice?
There's a silent recall regarding leaking fuel pumps. I've linked to the thread below. I would call a dealer, cite the recall and have them look up your vehicle by VIN. You may also PM "ChevyCustSvc" here on the forum and they can look that up for you.