2000 GTP water leaking into interior

[tjberens]

Greetings from Colorado! My 2000 GTP is leaking water onto the passenger side floorboard during rainstorms. The water is coming from deep underneath the dash. Had the windshield seal checked...it's OK. Don't see any signs of leakage around the door seal. Car has sunroof, but doesn't look like it's coming from there. Anyone have ideas where to go from here?

 

[dmahlikGT]

Bad heater core lines.

 

[Fivefingerdeathpunch]

you need the water deflector that go's inside the cowling under the wipers.

 

[KeithGTP03]

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

 

[gotgtp]

This happened with my car and drove crazy for about two months before I figured that out. It is the water deflector that you need. It was leaking right through the cabin filter so you might want to replace that also. I had a moldy smell untill I did.

 

[tjberens]

Thanks to all of you for the quick replies. I'll tackle the repairs tomorrow.