Wet driver side floor board

Tiny
QUISHA
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
I recently bought a used 04 trailblazer from and used auto shop the first day we got it we noticed the carpet was ruined with bad water damage so we asked it the vehicle had been underwater the sale an assured us it had not I looked up the car fax on it and it said it was not we have had it for about two weeks and noticed that the front drivers side floor board is still soaking wet can u tell me what I should do
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Tuesday, April 14th, 2015 AT 1:25 PM

12 Replies

Tiny
RIVERMIKERAT
  • MEMBER
It sounds like you need to figure out where it is leaking from and why. Is there a detectable odor? Is any of the weatherstripping around the door damaged? Can you see rust holes in the floorboards?

This video will help

https://youtu.be/q9_MZiS2_NE

Please run down this guide and report back.
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Tuesday, April 14th, 2015 AT 1:31 PM
Tiny
QUISHA
  • MEMBER
The Odor is ruined carpet mildew smell no rust by the the doors just the floorboard on the drivers side seems to stay wet can u tell me what I need to look into to try and have it repaired
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Tuesday, April 14th, 2015 AT 1:44 PM
Tiny
RIVERMIKERAT
  • MEMBER
I would replace the carpet. While doing so, check the condition of the floorboards. Repair can be anything from welding or soldering in a new piece to sealing holes with sealant.
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Tuesday, April 14th, 2015 AT 1:52 PM
Tiny
JWMARLANTA
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 34,000 MILES
When I run the AC the floor on the passenger side front becomes soaked. I believe the ac is not draining outsid the car. Could there be a disconnected hose?
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
DENNYP
  • EXPERT
There is a drain tube coming out of the firewall that is probably plugged up with debris. You can use a coat hanger or flexible wire to clear the clog.
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
JWMARLANTA
  • MEMBER
Do I get to it from under the car? Where exactly is it at?
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
DENNYP
  • EXPERT
Underneath on the passenger side. It is a small rubber elbow.
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
JWMARLANTA
  • MEMBER
I see it. Thanks. Of course now I am not running the AC but I will clear it now and keep an eye on it next spring. Any chance I could damage anything if I go beyond the elbow while clearing it?
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
SWILLIAMS9529
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 103,000 MILES
I have a 03 trailblazer and ive noticed the drivers side floorboard is damp, its not really wet. Its not running hot and doesnt appear to be losing water. What could it be?
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
DENNYP
  • EXPERT
Yes, don't use alot of force when you are clearing it.
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Your windhshield could be leaking -also could be coming from the AC drain and backing it up
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Monday, January 13th, 2020 AT 8:20 PM (Merged)
Tiny
DRCRANKNWRENCH
  • EXPERT
Check the fluid to make sure it is not antifreeze. If it is, the heater core is leaking and needs to be replaced.

The other likely item to check is the A/C drip hose. It drains condensatiton off the inner evaporator and onto the ground. Sometimes it gets criomped and backs up into the A/C pan and into the interior.
If it is not either of those, then there may be a problem with the fresh air box which is the cowl just under the windshield. It takes in fresh air for the A/C heater. There is the maion grate that you see from the out side and depending on the design, either the grate is removavble if it is plastic and heald in with palstic plugs or you have to work with ir under the dash if it is metal and part of the body. Essentially noth will have a few layers of cowling to direct rain away from the fresh air inlet which is right under the fresh air box. It is usually on the passenger side but can vary on some vehicles. The rain gets directed around the cowls and into two weep holes at either end of the box that drain out just over the rear of the front fender well. You can check the weep holes by pulling the inner fender well cover off and seeing if they are clogged. If you park outside all the time or have small debris around that can easily get past the size of the holes or slits in the grate, it can glog the weep holes and flood the box causing it to overflow into the interior.
The other posibility is that the windshield has a leak. They are glued in place and can leak especially if you have been in an accident.
The best way to start after you check to see if it is anti-freeze is to have someone help you one day when it is nice out. Have someone under the dash with a flashlight and someone with a garden hose outside. First put water into the cowl grate only and don't let it get onto the seam of the windshield where it seals to the cab. See if water starts to come through and also check if you can pin point the area where it is coming through.
Again, look for the A/C drain hose which is on the bottom of the firewall and should be a clear hose. Make sure it is not crimped and when you run the A/C on a humid day it will always create a puddle pretty quickly if it is working right. So if you don't see a puddle under the truck after a few minutes of full blast A/C, that may be the problem.
If the windshield appears to leak, take it to a glass shop and have them re-glue it. If you have had a windshield replaced before, you may be able to do it under warrantee.
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Monday, January 13th, 2020 AT 8:20 PM (Merged)

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