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73-87 Chevy _ GMC Trucks => Body, Glass & Paint => Topic started by: Chevynut73 on February 13, 2024, 09:41:05 AM

Title: Cab Leak from wash/rain ?
Post by: Chevynut73 on February 13, 2024, 09:41:05 AM

I have a water leak that comes into the cab right/passenger side when i wash her.

Ends up with wet carpet where the passenger's right foot would be. 

Pretty sure it's not coming in around the windshield. 

Any thoughts?   Have any of y'all had this problem?   

Thanks

Title: Re: Cab Leak from wash/rain ?
Post by: Shifty on February 13, 2024, 10:03:47 AM

If you're certain it's not the windshield, next guess would be the vents.

Title: Re: Cab Leak from wash/rain ?
Post by: kgross401 on February 13, 2024, 12:19:01 PM

I had the same problem on my truck and it was a bad hood latch rubber seal

Title: Re: Cab Leak from wash/rain ?
Post by: kgross401 on February 13, 2024, 12:48:13 PM

sorry correction I meant hood hinge seal

Title: Re: Cab Leak from wash/rain ?
Post by: bd on February 13, 2024, 08:28:49 PM

Water in the Cab Bulletin (http://forum.73-87chevytrucks.com/smforum/index.php?topic=22630.msg187035#msg187035)

Title: Re: Cab Leak from wash/rain ?
Post by: Mike81K10 on February 13, 2024, 09:16:39 PM

My cab was leaking from around the cowl, area where the wiper linkage is located. It was a rusted out and was one of the first things I had to repair in my restoration!

Title: Re: Cab Leak from wash/rain ?
Post by: Captkaos on February 14, 2024, 08:48:32 AM

short of pulling the carpet and trim to find the source check the cowl area under the windshield this where the firewall and cowl sheetmetal meet, I have seen many rusted out here.
Best bet is to remove the interior and do a water test to find the source.

Title: Re: Cab Leak from wash/rain ?
Post by: Chevynut73 on February 19, 2024, 05:29:57 PM

Thank y'all and they all make good sense.

She has very little rust except surface rust and the right finder where the battery leaked acid onto it (it's been replaced now).

After a little more investigation, I think it might be the heater core leaking!  I hear those can be a pain to replace!   

Title: Re: Cab Leak from wash/rain ?
Post by: Shifty on February 20, 2024, 08:53:52 AM

Nowhere near as bad on today's soap bubbles.  (no personality cars)

Title: Re: Cab Leak from wash/rain ?
Post by: juancano on May 01, 2024, 11:27:48 AM

Quote from: kgross401 on February 13, 2024, 12:48:13 PM

sorry correction I meant hood hinge seal

How did you fix that? Do you remove the cowl vent and add a bunch of sealant? Thanks.

Title: Re: Cab Leak from wash/rain ?
Post by: Mike81K10 on May 01, 2024, 12:51:52 PM

To fix my truck, I had to cut out the bad metal and weld in patch panels.

Title: Re: Cab Leak from wash/rain ?
Post by: JohnnyPopper on May 01, 2024, 06:24:52 PM

Quote from: Shifty on February 20, 2024, 08:53:52 AM

Nowhere near as bad on today's soap bubbles.  (no personality cars)

"Wind tunnel cars" They all look the same  ::)