I have a 2008 Pontiac G6 (No sunroof) and currently having problems where water is leaking through the Driver side and Passenger side floor boards. I can press my feet into the floor board after driving in the rain and water will cover my toes This problem did not start until we had a Cracked radiator thanks to a hidden cement block and the insurance company fixed it at a GM dealer. They did not Replace the under shield (I'm guessing it is) in saying the car did not need it.
Is it possible that the under shield was keeping the water out? If not what could be making the water go into the car like that.