Drip under drivers side dash - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Fly By Night · 05-02-2016, 01:56 AM

When it rains I get water drips that show up under my dash, does anyone know where this comes from? I'm guessing the front cowl where the door vents and heater get their air from?

67chevy_hotrod · 05-02-2016, 02:23 AM

Mine does the same thing but I haven't tracked it down yet.. Btw nice name choice. A fellow Getty lee fan

**Grumpy old man** · 05-02-2016, 04:46 AM

Check the body seam under the dash ,that leak usually starts from the windshield seam at the gasket ,pull your cowl panel off to see the extent of the corrosion .

Andy4639 · 05-02-2016, 07:11 AM

I would say it's the curve in the windshield gasket. Look right in the center of the curve and you should see a small hole in your dash also which will let the drip into the floor as your picture shows.

n33k0 · 05-02-2016, 10:12 AM

My truck has the same leak, and I haven't found the source either. During really heavy rain I'll get a similar drip on the passenger side. I noticed that if I park the truck pointed up hill, the drip isn't as bad as when the truck is level or pointed down hill.

Andy4639 · 05-02-2016, 12:08 PM

Windshield gasket. Water comes in behind it at the top corner then runs down the inside of the gasket. The dash has a hole in it in that curved area for it to drip to the floor.

Fly By Night · 05-09-2016, 12:52 AM

Quote:

Originally Posted by Andy4639

Windshield gasket. Water comes in behind it at the top corner then runs down the inside of the gasket. The dash has a hole in it in that curved area for it to drip to the floor.

Thanks Andy, fortunately I am do for a windshield so that sounds like an easy enough fix.

In The Ten Ring · 05-09-2016, 12:55 AM

Quote:

Originally Posted by Andy4639

Windshield gasket. Water comes in behind it at the top corner then runs down the inside of the gasket. The dash has a hole in it in that curved area for it to drip to the floor.

Sounds like GM was planning ahead with the hole in the dash!

05-02-2016, 01:56 AM	#1
Fly By Night Registered User Join Date: Aug 2013 Location: Four Corners Posts: 36	Drip under drivers side dash When it rains I get water drips that show up under my dash, does anyone know where this comes from? I'm guessing the front cowl where the door vents and heater get their air from? Attached Images

05-02-2016, 02:23 AM	#2
67chevy_hotrod Registered User Join Date: Jun 2014 Location: Lake Tapps Washington Posts: 386	Re: Drip under drivers side dash Mine does the same thing but I haven't tracked it down yet.. Btw nice name choice. A fellow Getty lee fan __________________ 1967 Chevy CST 10 1969 Chevy C/20 Longhorn 1969 K10 Suburban 1972 Chevy Cheyenne Super 10 turned K30 (sold)

05-02-2016, 04:46 AM	#3
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Drip under drivers side dash Check the body seam under the dash ,that leak usually starts from the windshield seam at the gasket ,pull your cowl panel off to see the extent of the corrosion . __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

05-02-2016, 07:11 AM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Drip under drivers side dash I would say it's the curve in the windshield gasket. Look right in the center of the curve and you should see a small hole in your dash also which will let the drip into the floor as your picture shows. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

05-02-2016, 10:12 AM	#5
n33k0 Registered User Join Date: Sep 2014 Location: Florida Posts: 184	Re: Drip under drivers side dash My truck has the same leak, and I haven't found the source either. During really heavy rain I'll get a similar drip on the passenger side. I noticed that if I park the truck pointed up hill, the drip isn't as bad as when the truck is level or pointed down hill. __________________ Nick 1972 Chevrolet C10 Stepside

05-02-2016, 12:08 PM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Drip under drivers side dash Windshield gasket. Water comes in behind it at the top corner then runs down the inside of the gasket. The dash has a hole in it in that curved area for it to drip to the floor. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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