2008 H3 Floor Leak Help?

[StandoutAlpha]

2008 Hummer H3

Wet/soak underfloor carpet. Both front : driver side and mostly passenger side---> more wet/soak



*Sunroof drain hose is not clog already checked clean and clear*



What else could be the cause?

 

[jakesz28]

Is the hose still connected? Some times ice pops the hose off the sunroof drains.

 

[StandoutAlpha]

Yes both side hose are connected I even did the cup of water test on both side it drains behind the front fender well.

 

[Bowser-II]

Check the ac drain tube on passenger side

It does not really seal well and I had significant water coming in there at times


Sent from my iPhone using Tapatalk

 

[Bowser-II]

Also, after that check:

Windshield, some folks have issues with bad seals

Roof rails, some folks have had issues with rusting or damaged press nuts


Door seals, low probability but easy to check, look for kinks, pinches, and gaps


Sent from my iPhone using Tapatalk

 

[StandoutAlpha]

Check the ac drain tube on passenger side

It does not really seal well and I had significant water coming in there at times


Sent from my iPhone using Tapatalk

Where exact is the AC drain tube located? I doubt its that because I haven't been using the AC due to a bad AC evaporator I just got that replaced that is why I found out about the soak floor.

 

[Bowser-II]

It’s not necessarily the AC, but that the tube is not real well sealed against the firewall, letting water splash inside. It does not seem like too much gets in, but in a heavy rainfall it can be notable.


Right side (passenger), below the computer, up against the firewall.

Sent from my iPhone using Tapatalk

 

[jakesz28]

Yes both side hose are connected I even did the cup of water test on both side it drains behind the front fender well.

There are 4 drain tubes.

 

[StandoutAlpha]

It’s not necessarily the AC, but that the tube is not real well sealed against the firewall, letting water splash inside. It does not seem like too much gets in, but in a heavy rainfall it can be notable.


Right side (passenger), below the computer, up against the firewall.

Sent from my iPhone using Tapatalk

Mines a L shape tube I can easily remove that and poke something in the hole

 

[StandoutAlpha]

There are 4 drain tubes.

Front and rear drain tubes is clean and clear.

 

[StandoutAlpha]

1. I know its not a heater core leak because I would have smell coolant inside and see coolant level drop from the expansion tank
2. Not my Ac drain tube because I haven't use the AC since the AC Evaporator has a leak "just replaced it"

Could be the the AC tube firewall hole that water sneaks in since the hole is about 1.5in open and the tube is only 1in. so about .25in all around that has a opening

 

[Clark]

Hi
I had a problem also my drain hoses were all clean but on the passenger side fire wall
one of the drain hose's is plugged into a grommet if that hose is not connected properly
you will have flooding problems. check it out, getting your hand in there ain't easy.
Good luck.