Wet Passenger Side Floorboard - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 05-25-2008, 01:02 PM
skone skone is offline
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Wet Passenger Side Floorboard

Anyone know what would cause the passenger side floorboard to get extrememly wet? I don't believe it is a heater core because the liquid is water. My guess is condensation from the A/C, but how does it leak back inside? What do I need to do to fix it?
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  #2  
Old 05-25-2008, 01:10 PM
CWBYTAZ1 CWBYTAZ1 is offline
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Originally Posted by skone View Post
Anyone know what would cause the passenger side floorboard to get extrememly wet? I don't believe it is a heater core because the liquid is water. My guess is condensation from the A/C, but how does it leak back inside? What do I need to do to fix it?

Does your TrailBlazer have a sunroof?
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  #3  
Old 05-25-2008, 03:04 PM
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RayVoy RayVoy is offline
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I think your right, AC condensation. There is a drain hose, under the hood, on the firewall, passenger side. If plugged, the water goes into the truck.
There is a place where the heater and ac hoses & pipes go through the firewall, the drain is the hose on your right as you view the firewall.
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Old 05-25-2008, 03:46 PM
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parrothead parrothead is offline
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Originally Posted by RayVoy View Post
I think your right, AC condensation. There is a drain hose, under the hood, on the firewall, passenger side. If plugged, the water goes into the truck.
There is a place where the heater and ac hoses & pipes go through the firewall, the drain is the hose on your right as you view the firewall.
This may be the cause. I know sometimes there is a quite a puddle under my TB and traced it to the hose that runs next to the condenser. I imagine if that hose was clogged alot you would see alot of water.

Do you notice more water collecting on the floor after it rains? If you do there may be a leak or blockage somewhere else.
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Old 05-25-2008, 06:22 PM
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the roadie the roadie is offline
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Originally Posted by parrothead View Post
I imagine if that hose was clogged alot you would see alot of water.
Yep. There's a flap valve in that tube and if it's pulled out towards the front of the vehicle at the firewall, it drains inside instead of to the ground. Happened to me once, and it drained about a quart when I figured it out and pushed the hose back in tight. Need a picture? It's sort of obviously near the receiver/dryer.
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Old 05-25-2008, 06:29 PM
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i use a thick zip tie to break up any debris in the tube
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  #7  
Old 05-25-2008, 11:52 PM
skone skone is offline
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Yeah, I found that house and as soon as I removed it a lot of water drained out. It was like I removed the plug from a tub. I figured it was clogged and blew the hose out, but it was fine. There was no clog. I am not sure why it wasn't draining, but after I reinstalled it I verified it was draining. I guess we will see what happens. Thanks for the posts.
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Old 06-17-2009, 11:43 PM
markwint04 markwint04 is offline
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I have the same problem.. I will try to look for the hose..
What a great site this is just to be able to fix it yourself .. I love this site
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Old 06-18-2009, 12:05 AM
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Old 06-18-2009, 06:39 AM
markwint04 markwint04 is offline
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Much thanks!
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