I had this problem on my 2000 GTP without sunroof. Turned out the plastic cowl over the blower motor inlet was letting water into the blower motor opening. This was soaking my carpet, blower motor and blower motor control. It cost me about $300 in parts to replace the blower motor and the blower controller (automatic climate control). Now it is leaking again, so I have to fix the cheap plastic cowl again where it is "supposed" to seal against the windshield and keep water out of the gaping hole for the blower motor.
I had found a write-up of a fix for this, bu I can't find it right now.
Sunday, November 16th, 2008 AT 12:26 PM