2005 Pontiac Grand Prix Leak

Tiny
GP17FAN
  • MEMBER
  • 2005 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 44,000 MILES
I'm getting a wet passenger side floor (front and back) every time it rains. I believe the water is coming in from somewher on the firewall or cowl. The windshield or windows are not leaking. Any suggestions?
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Wednesday, April 30th, 2008 AT 10:22 PM

5 Replies

Tiny
BMRFIXIT
  • EXPERT
Do u have sun roof
if so I would check and clean drains in it
open sunroof and check corners
u can use compressed air and blow throw the drain holes
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Sunday, May 4th, 2008 AT 7:13 PM
Tiny
BECOMINGCLOSER
  • MEMBER
I am having the exact same problem on my 2000 GTP.

Have you found where it is coming from?
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Monday, August 11th, 2008 AT 3:03 PM
Tiny
BMRFIXIT
  • EXPERT
If have a sun roof do as advice up
problem was solved
95% its clogged

check if u r ac drain clogged too
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Monday, August 11th, 2008 AT 10:45 PM
Tiny
RELLIKNIKCUF
  • MEMBER
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.
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Sunday, November 16th, 2008 AT 12:26 PM
Tiny
RELLIKNIKCUF
  • MEMBER
Here's a link.

Clubgp. Com/newforum/tm. Asp?M=2398123&p=2&tmode=1&smode=1

Once I figured out the best terms to search for I found it. There are literally hundreds, maybe thousands, of topics on the net about this problem specifically with 97-03 Grand Prix's. This should help.
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Sunday, November 16th, 2008 AT 12:37 PM

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