water in cab - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rckendal · 08-01-2007, 11:15 AM

Need help with water getting in floor every time it rains or i wash my truck. Can not seem to find were it is coming in at. I sealed heater box, have new front window seal, also new hood seal. Thanks for any help. Its not alot of water but water in cab floors over time is not good.

Big White GMC · 08-01-2007, 11:30 AM

Check Your Door Seals. Mine Leaked All Of The Time, Until I Got New Seals And It Stopped.

timcos · 08-01-2007, 11:42 AM

Where in the cab is the water? Side..center?

You may have siffered some rust or overflowing of your sided floor vent boxes.

They fill up with junk, and the water runs into the cowl and down into the vent boxes....then thye can overflow if too full...and seep into the cab.

cdowns · 08-01-2007, 11:42 AM

a new windshield seal doesnt necessarilly mean a sealed windshield// if driprail sealer is crap it can leak thu the windshield posts// bad vent seals can leak// open holes in firewall// door seals

**Daubs** · 08-01-2007, 01:25 PM

Yep, check the driprail. Had same issue and looked towards windshield...only to find the drip rail needed sealing.

Brad · 08-01-2007, 02:13 PM

I suspect its coming in at the seam where the drip rail is, way up top, then leaking down. This is aprox 3" in from the end of the window you'll see the seam I'm talking about. The way to check for a leak is to get a garden hose and have a helper look inside with a flashlight. Then start from the bottom of the window and graaaaaadually work your way up top. Leaks can take their time to manifest in another part of the cab, so that's why you need to take it slow. I'm always able to find a leak this way.

1970bowtie · 08-01-2007, 02:34 PM

check your drip rails,most times the factory sealant dries up and cracks,causing water to run down the a pillars

HD2000 · 08-01-2007, 03:10 PM

Mine leaks through the hole where the antenna cable comes into the cab - might be another spot to check (my cheesy aftermarket antenna doesn't fit the cowl correctly either).

Orange · 08-01-2007, 04:47 PM

I had a lot of water in my cab floor once.
Then again...I was driving my truck through a river, and it was a little deeper than I originally thought.

DLB

Longhorn Man · 08-01-2007, 06:24 PM

every truck i have owned leaked in the cowl, on the passenger side.

jimfulco · 08-01-2007, 08:56 PM

Mine leaks in the middle of the cowl, a few inches below the hood area, where there's a kind of ledge that's rusted out.

dan42 · 08-01-2007, 09:08 PM

You guys just need to move to southern Cal - it hasn't rained here since March, and that wasn't much.

ChevLoRay · 08-01-2007, 09:50 PM

Kick panels....air inlets from the cowl vents. Dirt and trash collects in the plenums and the rain causes the stuff to rust out the kick panels, or at least lets rain into the air inlets that are on the kick panels if your panels aren't rusted out.

Sealing the windshield won't fix it.

The other suggestions are good, too. So you have a list of stuff to check.

**Stocker** · 08-02-2007, 12:12 AM

I fought water on the floor for quite some time, had the windshield re-sealed and still had water... Glass guy finally found it was leaking around the rear window. stays dry now.

Longhorn Man · 08-02-2007, 09:49 AM

Quote:

Originally Posted by dan42

You guys just need to move to southern Cal - it hasn't rained here since March, and that wasn't much.

I was shocked when it rained in LA a couple weeks ago when i was there.

Lemield · 08-02-2007, 01:33 PM

My CST leaks at the wiper motor seal......have not replaced it yet...too lazy....

08-01-2007, 11:15 AM	#1
rckendal Registered User Join Date: Jun 2007 Location: virginia Posts: 64	water in cab Need help with water getting in floor every time it rains or i wash my truck. Can not seem to find were it is coming in at. I sealed heater box, have new front window seal, also new hood seal. Thanks for any help. Its not alot of water but water in cab floors over time is not good.

08-01-2007, 11:30 AM	#2
Big White GMC Registered User Join Date: Jun 2007 Location: Homer, Georgia Posts: 56	Re: water in cab Check Your Door Seals. Mine Leaked All Of The Time, Until I Got New Seals And It Stopped.

08-01-2007, 11:42 AM	#3
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: water in cab Where in the cab is the water? Side..center? You may have siffered some rust or overflowing of your sided floor vent boxes. They fill up with junk, and the water runs into the cowl and down into the vent boxes....then thye can overflow if too full...and seep into the cab. __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

08-01-2007, 11:42 AM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: water in cab a new windshield seal doesnt necessarilly mean a sealed windshield// if driprail sealer is crap it can leak thu the windshield posts// bad vent seals can leak// open holes in firewall// door seals __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

08-01-2007, 01:25 PM	#5
Daubs Registered User Join Date: Jan 2005 Location: Eastern Nebraska Posts: 611	Re: water in cab Yep, check the driprail. Had same issue and looked towards windshield...only to find the drip rail needed sealing. __________________ '72 Chevy K-20 Crate 350, SM465, 4.10's

08-01-2007, 02:13 PM	#6
Brad Out of the carpool lane. Join Date: Jan 2000 Location: Clark Co, WA Posts: 5,673	Re: water in cab I suspect its coming in at the seam where the drip rail is, way up top, then leaking down. This is aprox 3" in from the end of the window you'll see the seam I'm talking about. The way to check for a leak is to get a garden hose and have a helper look inside with a flashlight. Then start from the bottom of the window and graaaaaadually work your way up top. Leaks can take their time to manifest in another part of the cab, so that's why you need to take it slow. I'm always able to find a leak this way. __________________ 1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten...

08-01-2007, 02:34 PM	#7
1970bowtie Senior Member Join Date: Apr 2007 Location: East Texas Posts: 549	Re: water in cab check your drip rails,most times the factory sealant dries up and cracks,causing water to run down the a pillars __________________ Justin 1970 c/10 short wide bed My build thread WTT 1970 chevy front end for 67/68 chevy front end WTT 2 15x10 american racing outlaw 2 wheels for 2 of the same in a 15x7 or 15x8

08-01-2007, 03:10 PM	#8
HD2000 Registered User Join Date: Jul 2006 Location: Calgary, Canada Posts: 43	Re: water in cab Mine leaks through the hole where the antenna cable comes into the cab - might be another spot to check (my cheesy aftermarket antenna doesn't fit the cowl correctly either).

08-01-2007, 04:47 PM	#9
Orange Licensed to Thrill! Join Date: Apr 2006 Location: Northwest, GA Posts: 1,673	Re: water in cab I had a lot of water in my cab floor once. Then again...I was driving my truck through a river, and it was a little deeper than I originally thought. DLB __________________ 1971 GMC.Lowered. Overdrive. Orange. Krue's excellent FAQ Index.

08-01-2007, 06:24 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: water in cab every truck i have owned leaked in the cowl, on the passenger side.

08-01-2007, 08:56 PM	#11
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Re: water in cab Mine leaks in the middle of the cowl, a few inches below the hood area, where there's a kind of ledge that's rusted out.

08-01-2007, 09:08 PM	#12
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: water in cab You guys just need to move to southern Cal - it hasn't rained here since March, and that wasn't much. __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

08-01-2007, 09:50 PM	#13
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: water in cab Kick panels....air inlets from the cowl vents. Dirt and trash collects in the plenums and the rain causes the stuff to rust out the kick panels, or at least lets rain into the air inlets that are on the kick panels if your panels aren't rusted out. Sealing the windshield won't fix it. The other suggestions are good, too. So you have a list of stuff to check. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

08-02-2007, 12:12 AM	#14
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,599	Re: water in cab I fought water on the floor for quite some time, had the windshield re-sealed and still had water... Glass guy finally found it was leaking around the rear window. stays dry now. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

08-02-2007, 01:33 PM	#16
Lemield Registered User Join Date: Dec 2004 Location: Arvada Colorado Posts: 1,321	Re: water in cab My CST leaks at the wiper motor seal......have not replaced it yet...too lazy.... __________________ Larry 1949 Willys CJ2A, Kubota Turbo Diesel engine, Warn Overdrive, 11 inch brakes, 12volt, Warn M8000 Winch "Little Green" 1970 Rustoleum Roller Red C20 Custom Camper 454 TH400 "Big Red" 1971 K20 6.2 Turbo Diesel 4x4 4spd Ranger Overdrive "Pumpkin Wagon" 2005 VW Beetle Diesel 44+ MPG "Silver Bullet"



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