Leak in my Cab - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sinister · 02-16-2009, 02:53 PM

I have a leak behind the glove box. There's some rust under the over hang part just above the heater/ac box. Hard to explain, check out the pic. I have no idea how I'm going to get to it to cut out the rust. Last time I had the cowl off it seemed solid.

tcb-1 · 02-16-2009, 03:09 PM

Sin,
take a look at the drip lip, under the hood, that's just behind the heater box. I just imagine it's coming from there by where the rust is at in your pic. I actually came out to the garage just to look at the area, but since I don't have a/c, mine's a bit different.

is it just surface rust or has it got some depth?

unfortunately, you may have to pull the cowl and the heater/ac box off the firewall to rule out where your getting the water infiltration.

sorry, not a great answer. hopefully someone else can chime in.

Sinister · 02-16-2009, 03:17 PM

Hey Doug. The rust is about a 3" square. It's pretty bad. It's above the heater box though. I'm thinking it's leaking from somewhere around the cowl somehow.

tcb-1 · 02-16-2009, 03:28 PM

Sin,
I really think you should pull the cowl. I will guarantee you a 6 pack of Schlitz (yeah I'm cheap) that it's the drip lip under the hood or maybe a cowl screw that's allowing water in. those freaking body seals are notorious for rust in those areas.

hate to say it, but your going to have to remove a few items so that the picture may be clearer. start with the cowl since it's the easiest. if you were closer I'd be over to help wrench.......

Sinister · 02-16-2009, 03:31 PM

How would I seal a cowl screw? I think that may be the culprit.

tcb-1 · 02-16-2009, 03:43 PM

easiest way would be to install the screw like normal, then put a dab of silicone over it.

**special-K** · 02-16-2009, 03:47 PM

Take your cowl cover off.There`s abody seam where the windshield post meets the cowl that leaks when the seal goes bad.It can rust out if not noticed in time.

Sinister · 02-16-2009, 04:10 PM

Thanks for the help guys. I gotta wait a couple of days for it to quit raining, then I'll pull the cowl and see what's up.

tcb-1 · 02-16-2009, 05:33 PM

it's raining AGAIN in LA? that's kind of rare, isn't it Sin??

Sinister · 02-16-2009, 05:35 PM

Quote:

Originally Posted by tcb-1

it's raining AGAIN in LA? that's kind of rare, isn't it Sin??

It's our version of Winter. LOL

02-16-2009, 02:53 PM	#1
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Leak in my Cab I have a leak behind the glove box. There's some rust under the over hang part just above the heater/ac box. Hard to explain, check out the pic. I have no idea how I'm going to get to it to cut out the rust. Last time I had the cowl off it seemed solid. __________________ Beat it to fit, Paint it to match...

02-16-2009, 03:09 PM	#2
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Leak in my Cab Sin, take a look at the drip lip, under the hood, that's just behind the heater box. I just imagine it's coming from there by where the rust is at in your pic. I actually came out to the garage just to look at the area, but since I don't have a/c, mine's a bit different. is it just surface rust or has it got some depth? unfortunately, you may have to pull the cowl and the heater/ac box off the firewall to rule out where your getting the water infiltration. sorry, not a great answer. hopefully someone else can chime in. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

02-16-2009, 03:17 PM	#3
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: Leak in my Cab Hey Doug. The rust is about a 3" square. It's pretty bad. It's above the heater box though. I'm thinking it's leaking from somewhere around the cowl somehow. __________________ Beat it to fit, Paint it to match...

02-16-2009, 03:28 PM	#4
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Leak in my Cab Sin, I really think you should pull the cowl. I will guarantee you a 6 pack of Schlitz (yeah I'm cheap) that it's the drip lip under the hood or maybe a cowl screw that's allowing water in. those freaking body seals are notorious for rust in those areas. hate to say it, but your going to have to remove a few items so that the picture may be clearer. start with the cowl since it's the easiest. if you were closer I'd be over to help wrench....... __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

02-16-2009, 03:31 PM	#5
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: Leak in my Cab How would I seal a cowl screw? I think that may be the culprit. __________________ Beat it to fit, Paint it to match...

02-16-2009, 03:43 PM	#6
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Leak in my Cab easiest way would be to install the screw like normal, then put a dab of silicone over it. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

02-16-2009, 03:47 PM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,861	Re: Leak in my Cab Take your cowl cover off.There`s abody seam where the windshield post meets the cowl that leaks when the seal goes bad.It can rust out if not noticed in time. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-16-2009, 04:10 PM	#8
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: Leak in my Cab Thanks for the help guys. I gotta wait a couple of days for it to quit raining, then I'll pull the cowl and see what's up. __________________ Beat it to fit, Paint it to match...

02-16-2009, 05:33 PM	#9
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: Leak in my Cab it's raining AGAIN in LA? that's kind of rare, isn't it Sin?? __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

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