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

: Wet Passenger Side Floorboard


skone
05-25-2008, 01:02 PM
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?

CWBYTAZ1
05-25-2008, 01:10 PM
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?

RayVoy
05-25-2008, 03:04 PM
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.

parrothead
05-25-2008, 03:46 PM
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.:iagree: 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.

the roadie
05-25-2008, 06:22 PM
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.

MAY03LT
05-25-2008, 06:29 PM
i use a thick zip tie to break up any debris in the tube

skone
05-25-2008, 11:52 PM
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.

markwint04
06-17-2009, 11:43 PM
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

the roadie
06-18-2009, 12:05 AM
http://www.roadie.org/acdrain3.jpg

markwint04
06-18-2009, 06:39 AM
Much thanks!

rnation
06-19-2009, 12:56 AM
I had the same issue. It was with my s-10. After checking we found out it was the front windshield. When it rain or car wash the water would channel down the windshield and into the passenger side floor. I hope this helps..:cool:

markwint04
06-19-2009, 06:36 AM
After taking off the hose I found a small leaf in it. It took me 3 minutes to fix the problem.. Thank you, markwint04

StephanieH
07-07-2009, 04:26 PM
Hi
The passenger side floorboards in my 2004 Trailblazer are soaked after any heavy rain. (No sunroof, and the door closes fine). Would it be the AC even though it only happens when it rains?

Unfortunately the same thing happened about 2 years ago on the drivers side and it cost 400 to fix it at the dealership (resealed the floor and put some new foam in). Before I take it to the dealership again wondering if anyone has any home-solutions we could try?
Thanks!

TEFennell4
07-14-2009, 02:01 PM
Having the same problem here, and even noticing that the water is finding a path straight through the floor pan and dripping out the bottom. I'm going to try pulling the hose and will report back. Is the hose just a short length that can be taken out from under the hood for inspection/cleaning? Are people finding the need to route out (poke or vacuum) the inside of the hole in the firewall?

msigler21740
07-27-2009, 08:43 PM
I had the same issue on my 04 trail. I took it to the GMC dealer and they charged me 17 bucks to fix it.

the roadie
07-27-2009, 09:51 PM
Welcome, and sorry you didn't find trailvoy before spending even $17 at the dealer. You'd think that it wouldn't be worth their bloody time to process an invoice for $17 and annoy you like that.

msigler21740
07-28-2009, 10:39 PM
Thanks for the welcome, looking forward to meet some of you guys at carlise.

Dbrucedothan
10-24-2009, 10:02 PM
I will try these ideas myself, but my passenger floor gets wet also, mainly after a rain. It is mainly wet towards the front floor, but it feels wet all the way back to the back floor. I did find the seal to the back door pulled away from the frame and it looks like the water could travel down the frame towards the carpet and be absorbed and then gravitate to the front do to the truck being higher in the rear due to the suspension.

It's after a rain when its wet, so are there drains for the rain water that could be stopped up, or is that only an A/C problem?

WOOLUF1952
10-25-2009, 02:45 AM
IIRC, there are only roof drains in TV's with a sunroof.:m2:

Dbrucedothan
10-27-2009, 10:24 PM
I checked my Envoy today and low and behold....the drain tube had a leaf in it and it was backed up with water. Drained for at least 15-20 seconds.

So where exactly is this water coming from? The A/C or exterior? I turned on the A/C for about five minutes to see if I could get some drainage, but nothing happened (granted it's cold and not very humid here). Anyone know the source of this water?

carstuff44
10-28-2009, 03:24 AM
It's moisture removed from incoming air by the AC system. That's how they de-humidify as well as cool. The condensation has to go somewhere, so the hose drains it out of the condenser housing (or at least it's supposed to!).

wsryan
07-10-2010, 12:29 PM
Mine does the same thing ('04 TB), but has recurred MANY times. I can push a pipe cleaner in the opening and it will drain buckets, but then it will recur, maybe days to weeks later. Any thoughts?

the roadie
07-10-2010, 12:58 PM
Yours could be mold/algae growth triggered by spores that remain after you unblock the tube. Start by pulling it off and soaking it in bleach. If not, consider removing your blower motor resistor pack and spraying mold/mildew remover into the airstream to get the AC evaporator treated so you don't end up with Legionnaire's Disease.

wsryan
07-10-2010, 02:53 PM
Yeah, I actually pulled the tube off to see if that was contributing to the problem. Someone cleaned out my car and the tube disappeared from the cupholder on the console. And, whenever we notice the carpet beginning to get wet, I can poke the pipe cleaneer in the port and it will drain like gangbusters.

the roadie
07-10-2010, 03:20 PM
First time mine backed up and got the carpet wet, it was that I had slightly dislodged the hose with some maintenance work in the area. I think there's a flap inside that seals the hole if the hose isn't pushed in all the way. The lack of a hose might be your problem, and the tray of consendate at the bottom of your evaporator might be very icky all the time.

GM #22697948
ST1(LL8,CJ2,CJ3) HOSE,A/C EVPR & BLO MDL DRN
(ACDelco #15-33323)

$7 at the dealer - $4-5 online.

lynch55
07-10-2010, 03:27 PM
Yep, I agree with everyone, and if the roadie tells you something, you can take it to the bank

wsryan
07-10-2010, 04:03 PM
I will give the new tube a try. Thanks!

Black04 SLT
08-12-2010, 08:17 PM
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.

http://www.roadie.org/acdrain3.jpg

I guess using the 'search' feature does pay off ;)

Doing a little interior cleaning this morning and came across a very wet passenger side floor. Pulled the carpet back and exposed the firewall and let my ac run.....nothing happened...no water :confused: Had to be coming from somewhere because I had about 1/4 inch of water on the floorboard under the carpet. My truck hasn't been in the rain for quite along time so I concentrated on it being an AC issue. Been using that alot because of this heatwave we have been in lately........

Did some searching and like magic an answer appeared.... My hose must have been dislodged partially....took it out and blew thru it....put it back and presto----> out comes a ton of water.

Roadie saves the day again.....or at least mine :thx:hail:

-J

brokebrwr
08-19-2010, 01:21 AM
Cool, even a girl -- old lady can do it! No trip to the mechanic for me!

07DuramaxHD
05-31-2011, 01:42 PM
Ok so my wife's floorboard of her Trailblazer was wet and this seems to be the issue. I removed the hose and snaked a bread tie inside of the drain and I would say a quart or better of water came out. It looked like to me that there was a leaf stuck inside of the drain that was causing the problem. I have 2 questions...is there a certain way the drain hose has to be oriented(i.e. 12 o'clock) and does the hose have to be inserted just up to the raised "o" portion at the top of the drain or does that have to be completely inside of the drain? Also I noticed there seems to be air blowing out of the hose after I cleaned it all out. I'm assuming this means that the drain is completely cleared?

thanks

wsryan
06-04-2011, 10:44 PM
Follow up on my wet floorboard issue. I did finally get around to changing the port and tube to a brand new one. There is no flap valve r valve of any kind visible, but there was some black gunk built up inside the port--not enough that I would have expected it to impede drainage, but perhaps enough to allow an air bubble to block flow? I have run the A/C quite a bit the past couple of days (up over 100 degrees here in South Central Kansas), and dry so far.

the roadie
06-04-2011, 11:03 PM
Do you see it drip as expected under the vehicle?

KNBlazer
08-20-2011, 08:55 PM
thank you.. I just did this fix, about half a gallon of water poured out, there were leaves stuck in there... I used a Nylon Cable Tie, first few ounces that poured out were black, then all clear... Might be too soon to tell, but I think it took care of the humid air that would blow at idle.. will see next month if it also takes care of the low AC output at idle during hot weather... but normally air at idle would blow at about 58-62 degrees, after I unplugged the drain, the air was blowing at a constant 52 and it felt cool, not humid... wet vac the passenger floor, and finito ... all it cost me were a few drops of sweat, damn wet vac is heav-eeeeeeeeee... :D

alexlamont
07-16-2012, 10:43 AM
You guys are awsome. I thought it was the AC but was not sure how to rectify the situation. When I get home I will get a shop vac and suck that bugger clean.:thx:thx:thx

exjay
08-25-2014, 07:31 AM
Any other suggestions guys? I have the same issue and removed the cap/tube and its clear also used a shop vac on the pipe coming out of the firewall to help dislodge any debris in there. No water really came out of the tube just small drips. HELP!

Loverotties
08-25-2014, 10:43 AM
Any other suggestions guys? I have the same issue and removed the cap/tube and its clear also used a shop vac on the pipe coming out of the firewall to help dislodge any debris in there. No water really came out of the tube just small drips. HELP!

Do you have a sun roof?drains can clog too and go inside.

exjay
08-25-2014, 09:16 PM
No sunroof. Its defiantly AC related cause when it does drip inside the AC had been running pretty good for a hr or so. I removed the cap/tube again at the fire wall and felt back towards the cabin but no flap or debris just small amt of water on finger. AC is draining outside some on the ground after my wife came home today and the carpet is still dry from last shopvac session. Maybe it dislodged itself but never saw a gush of water everyone states they get once unclogged or maybe it unclogged on the road somewhere? Id almost drill a hold up in there and epoxy a separate tube out the firewall if I knew where to drill before I have to pull the dash for this stupid thing. :bonk:

mrwag
08-26-2014, 10:09 AM
I recently had this same exact problem. It was the AC tube for me as well. Pulled it off and shoved a zip tie in the hole a few times. Some black chunks came out and then a whole ton of water came flowing.

exjay
08-26-2014, 11:36 PM
Humm..how far in was the clog you think?

mrwag
08-26-2014, 11:59 PM
Not sure. Went probably 3-4" with the tie a few times. Blew right out.

sk8ermadre
08-27-2014, 04:13 PM
Maybe this is a far fetch idea but I had two cars not SUV's and that happened to them both. It was the heater core in both instances. Not sure if SUV's and trucks are the same though. Those cars were an 86 Chevy Corsica and a 1990 Ford Tempo I think. Good luck

exjay
09-08-2014, 10:55 PM
So figured out that I have AC drainage out the tube (as it should) but also leaking at the foam gasket/seal inside the cabin so Im wondering if the housing is cracked or partially separated at the drain tube where it exits the housing? Towel in the floor board was soaked this afternoon when the wife got home today. Any other ideas except for pulling the dash/box :( ?