Wet GMC

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  #1  
Old 05-15-03, 03:26 AM
dmitchelljr's Avatar
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Wet GMC

I have a 1989 GMC Extended Cab Truck. It has a 2.8 liter 6 cylinder motor. My problem is this: every time it rains, I can pull up the mat on the driver's side floorboard, and the carpet and padding underneath will be soaking wet. I will clean it up with a wet/dry vac, and the next time it rains, it will be wet again. I have looked under the dash and steering wheel assembly, and can not find where the water is coming in. Any ideas where to check for the water entering the truck?
 
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Old 05-15-03, 03:54 AM
Joe_F
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Have a glass shop look it over. Good chance of a leaky windshield.
 
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Old 05-15-03, 05:58 AM
Join Date: Jun 2002
Location: Long Island, NY
Posts: 1,531
Only if it applies:

Check if you have an alarm or other aftermarket accessory where they may have passed a wire through the firewall. I have seen many not sealed properly.

I have also seen ones that are sealed on the outside and water enteres the inside of the harness under the hood and leaks under the dash.

Larry
 
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Old 05-15-03, 11:22 AM
boofwv
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I had an '88 Toyota pickup that would do that also. It was because the drain line from the air conditioner condensate tray was clogged. I had to blow the drain line with compressed air once a year or so. Made me crazy until I figured it out.....
 
  #5  
Old 05-15-03, 12:23 PM
darrell McCoy
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Fresh air vent in front of windshield may have rust/hole or seam. 89 model but depends on where the truck was driven, could be rusted thru in some spot. You get a chance, take a hose and trickle a good stream into the vent area and see what you got. Fact is, get a buddy and trickle water from top of W/S center and watch inside, maybe you can find or get an idea of what you are up against. Remove the kick panel before you start.
 
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