Purchased car in approx. June 2009. Last few months when we had heavy rain, water is standing in front floorboards next morning. Seats, doors, dashboard are all dry. Has happened a few times.
Why is my 2008 Chevy Cobalt leaking water in the front floorboards? on 2008 Chevrolet Cobalt
first thing to do is see if its under factory warranty still if it is then have the service dept fix it. if not then it sounds like you have a drain problem causing to leak into cabin from heater core