Anyone know how this could've happened?

[BwolfGT]

I got in my car this morning, all windows rolled up, sunroof closed, all the doors shut, no evidence of water anywhere else in the car....yet the floor on my passenger side is soaking wet. Any ideas?

 

[black98gt]

Did it rain there last nite? Check up by where the cabin air filter is, if theres water up there, then you have to take off your cowel and replace the strip there. Its leaking from there.

See this link..
http://www.grandprixforums.net/f73/water-floorboard-take-2-permanent-fix-6961.html

 

[Abrasive]

In addition to the one above, I also have this write-up here that you can try and doesn't require any new parts at all.

http://www.grandprixforums.net/water_floorboard.php