Premium Member (Lifetime)
Join Date: Aug 2004
Location: Palm Beach, Florida
Re: Inside floor soaking wet!!!
I had several leak issues w/ my c5z's. As Tom said on the drivers side under where the washer motors is you can get your hand under there in the corner there are 3 udders that get clogged w/ leaves and then the cowl fills with water and gets in. Squeeze them and there is a slit in the bottom of all of them stick your fingers in there to clear them and run a hose up top to clean out.
The second and second most common is there in insufficient urethane between the windshield and body. It is hidden by the trim and the windshield actually has to come out. GM has known this issue and there was a TSB I believe . On my 12th visit to a 5th dealership chasing my leak which came down the A pillar and onto my floor from the top of the windshield I was told be a tech " hey I just went to a corvette class at GM and I am certain from what they told us you have a gap under that trim". They reluctantly pulled my windshield and the tech told me there was 1/4 inch gap up at the top and he could see the water stain and how it went down the a pillar. New urethane and leak fixed.
My third leak different C5Z was driver side plastic trim up windshield and over door. Look to see if water is getting down your door jam and then onto floor. There is the plastic, the trim, and then the weather strip fits into that. That has to be sealed to the body or water gets behind it and runs down and in.
Thats all I have for ya, so get to work!! PITA. C6Z no leaks either one of them!!!