Question about 1999 Pontiac Grand Prix

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There is water leaking from around the blower motor on the passenger side floor board

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I had this after I had a windsheild installed. Take off the plastic cowl around winsheild wipers. There is a rubber moulding that channels water away from the fresh air intake for the heater. it is probly moved or off. I cleaned and put it back on with caulg to make sure it stays in place. problem has not returned.

Posted on Jan 27, 2013

  • Bob Schumacher Jan 27, 2013

    I had this after I had a windsheild installed. Take off the plastic cowl around winsheild wipers. There is a rubber moulding that channels water away from the fresh air intake for the heater. it is probly moved or off. I cleaned and put it back on with caulg to make sure it stays in place. problem has not returned.

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I had the same problem on my 1997 pontiac, water leaking. when you fix this you can always install/replace an air cabin filter since you gonna go thru that anyway. this is a link where you can find information step by step on how to fix this problem is really easy I did it and problem solved!!! :-)
http://www.grandprixforums.net/water_floorboard.php

Haulero

Posted on Aug 31, 2008

Find rubber 90 degree elbow on the firewall, adjacent to the blower, pull it off, stick a stiff wire in the hole. Sometimes that drain gets plugged up with cobwebs,dirt, etc.

Posted on Aug 27, 2008

I HAD THE SAME PROBLEM AND I HAD TO USE SEALANT ALONG THE LOWER PORTION OF THE WINDSHIELD TO FIX THE PROBLEM. JUST USE RTV SEALANT

Posted on Aug 20, 2008

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your heater core is leaking, that would explain the antifreeze on the passenger floor-as for it leaking there when it rains, there is a piece of molding that sometimes move out of place, it is under the hood on the passenger side, below the vent plate (remove the wiper blade arms, the plate for access)-the ac not working? that could be as simple as low freon, or as bad as multiple leaks, comtaminated system, electrical issues-do you mean the blower motor, because with all that moisture stuff you have going on there I wouldn't be surprised if the blower motor has electrical issues due to the flooding.

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