Water puddling on the passenger side floor? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

silvrbreez · 07-29-2009, 09:25 AM

Whenever I park/drive the truck during a good rain, I get water coming into the truck and puddling at the base of the passenger side kickpanel just forward of the door sill. It's enough to soak the carpet, but it dries rather quickly.

I've done some troubleshooting and it appears to be coming in from the cowl on the passenger side and then leaking down the far passenger side of the inner firewall and through a few screws holding on the a/c components and firewall pad under the dash in that area.

I've looked under the hood and all the gaskets/seals visible to me without removing the cowl/hood seem to be installed and in decent shape.

Any thoughts on what this water is getting through to get into the cab?

**old Rusty C10** · 07-29-2009, 10:27 AM

mine was the seal around the door not the cowl

Driveway Dreams · 07-29-2009, 05:23 PM

Could be your windshield seal.

silvrbreez · 07-29-2009, 05:42 PM

Well I thought I ruled that out.

I did a test spray with the hose isolated at where the hood and cowl meet. I saw water getting in the void where the hood hinge mounts. Then I saw water in the floorboard. Up to that point, I hadn't sprayed the windsheild.

flamingbig10 · 07-29-2009, 07:53 PM

mine did the same thing so I completely closed up the cowl opening with a/c tape no problems after that

bumslie75 · 07-29-2009, 08:03 PM

i had a 93 s10 and it was the heater core not sure if its in the same place on your truck

jdurant · 07-29-2009, 11:08 PM

mine leaked from the kick panel area. The seal/gasket around the a/c circulate flapper thingy was leaking.

texasfunk · 07-29-2009, 11:33 PM

mine is doing the exact same thing, but its the heater core

silvrbreez · 07-30-2009, 07:39 AM

Quote:

Originally Posted by flamingbig10

mine did the same thing so I completely closed up the cowl opening with a/c tape no problems after that

a/c tape? Like insulated tape. You did it from the inside after removing the dash? Tell me more...

Quote:

Originally Posted by jdurant

mine leaked from the kick panel area. The seal/gasket around the a/c circulate flapper thingy was leaking.

I need to check that too. I thought it look pretty dried out and crappy when I replaced my kickpanels a few months back.

Quote:

Originally Posted by texasfunk

mine is doing the exact same thing, but its the heater core

so that would leak all the time and not just when it rains right? my problem is only when it rains.

Greenlee · 07-31-2009, 10:34 AM

I have had this problem a couple of times with my 76'. The first time the water was coming from the cowl area. The factory seam sealer was cracked and deteriated. I covered the seam with some black 3M sealer I got at the auto parts store and that fixed it. A couple of years later it started leaking again. I initially thought it had to be coming from the same area, but it turned out it was coming from the seal around the vent on the passenger side kick panel area.

Use a waterhose and see if you can narrow down where it's coming from.

I try to keep my truck in the garage most of the time now because I'm paranoid that it will spring another leak when it rains!

silvrbreez · 07-31-2009, 11:52 AM

Thanks Greenlee.

I've done a spray test with the hose and it's defintely coming in when I spray the cowl. From all you guys have said, I'm figuring it's got to be something with the seal behind the hinge or that vent seal.

07-29-2009, 09:25 AM	#1
silvrbreez Registered User Join Date: Oct 2008 Location: Lumberton, TX Posts: 64	Water puddling on the passenger side floor? Whenever I park/drive the truck during a good rain, I get water coming into the truck and puddling at the base of the passenger side kickpanel just forward of the door sill. It's enough to soak the carpet, but it dries rather quickly. I've done some troubleshooting and it appears to be coming in from the cowl on the passenger side and then leaking down the far passenger side of the inner firewall and through a few screws holding on the a/c components and firewall pad under the dash in that area. I've looked under the hood and all the gaskets/seals visible to me without removing the cowl/hood seem to be installed and in decent shape. Any thoughts on what this water is getting through to get into the cab?

07-29-2009, 10:27 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,313	Re: Water puddling on the passenger side floor? mine was the seal around the door not the cowl __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

07-29-2009, 05:23 PM	#3
Driveway Dreams I have car A.D.D. Join Date: Feb 2009 Location: Greeley, Northern Colorado Posts: 4,147	Re: Water puddling on the passenger side floor? Could be your windshield seal. __________________ -Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here.

07-29-2009, 05:42 PM	#4
silvrbreez Registered User Join Date: Oct 2008 Location: Lumberton, TX Posts: 64	Re: Water puddling on the passenger side floor? Well I thought I ruled that out. I did a test spray with the hose isolated at where the hood and cowl meet. I saw water getting in the void where the hood hinge mounts. Then I saw water in the floorboard. Up to that point, I hadn't sprayed the windsheild.

07-29-2009, 07:53 PM	#5
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: Water puddling on the passenger side floor? mine did the same thing so I completely closed up the cowl opening with a/c tape no problems after that __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326 Last edited by flamingbig10; 07-29-2009 at 08:07 PM.

07-29-2009, 08:03 PM	#6
bumslie75 Registered User Join Date: Apr 2009 Location: Reedley Ca Posts: 360	Re: Water puddling on the passenger side floor? i had a 93 s10 and it was the heater core not sure if its in the same place on your truck __________________ "There he goes. One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die."

07-29-2009, 11:08 PM	#7
jdurant Senior Member Join Date: Dec 2007 Location: Houston, Texas Posts: 679	Re: Water puddling on the passenger side floor? mine leaked from the kick panel area. The seal/gasket around the a/c circulate flapper thingy was leaking. __________________ Joseph 87 Turbo Buick 92 5.0 Mustang coupe 87 GMC Sierra SWB 82 Chevy K5 Blazer 2wd

07-29-2009, 11:33 PM	#8
texasfunk Registered User Join Date: Jun 2009 Location: Lubbock, TX Posts: 1,671	Re: Water puddling on the passenger side floor? mine is doing the exact same thing, but its the heater core

07-31-2009, 10:34 AM	#10
Greenlee Registered User Join Date: Jun 2004 Location: El Lago, TX Posts: 1,668	Re: Water puddling on the passenger side floor? I have had this problem a couple of times with my 76'. The first time the water was coming from the cowl area. The factory seam sealer was cracked and deteriated. I covered the seam with some black 3M sealer I got at the auto parts store and that fixed it. A couple of years later it started leaking again. I initially thought it had to be coming from the same area, but it turned out it was coming from the seal around the vent on the passenger side kick panel area. Use a waterhose and see if you can narrow down where it's coming from. I try to keep my truck in the garage most of the time now because I'm paranoid that it will spring another leak when it rains!

07-31-2009, 11:52 AM	#11
silvrbreez Registered User Join Date: Oct 2008 Location: Lumberton, TX Posts: 64	Re: Water puddling on the passenger side floor? Thanks Greenlee. I've done a spray test with the hose and it's defintely coming in when I spray the cowl. From all you guys have said, I'm figuring it's got to be something with the seal behind the hinge or that vent seal.



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