I have read and read and read some more posts about this, but I cannot find an answer. I just bought my car. 2005 base Cobalt. The driver side front and rear floorboard are soaked. I do not think it is A/C related because this is a poop-ton of water. I am unable to replicate it with a garden hose. And I do NOT have a sunroof, so that isn't the issue. Original GM windshield is present. I do not see any source of water entry. SOS!!!!!