My corvette leaks on the passenger side everytime it rains hard...water gets between the door and the seat and under the seat...any ideas of where it may be leaking?

 

Sounds like it could be coming from the joints where the targa roof W/S meets either the A or B pillar W/S but I'm only guessing.
The BEST way is to sit in the car with a flashlight while you have someone drown the area in question with either a hose or a couple of buckets of water and search for drips. From there you'll have a starting point. That's the way I found my leak.
In the mean time you can read up on this thread. Lots of info on leaks :

https://www.corvetteforum.com/forums...-checks-2.html

You can also read up on this Service Bulletin :

https://www.corvetteactioncenter.com...guide-466.html

 

Ride thru the car wash sitting in the passenger seat.

 

 

I wish people would be better about titles of threads in this forum..."2002 Corvette" is not the best way to make this sort of thread easily searchable in the future.

 

DO NOT DO THIS!

A better option would be get a hose in your front yard and have someone spray down the car when you are sitting it it.

 

I was thinking the same thing as far as the Car Wash was concerned and I also suggested he use a bucket or garden hose.

 

Is your Corvette a coupe or convertible. If it's not due to a damaged roof gasket then it could be the window glass pacement or pressure. Have you or someone recently replaced the window regulator/motor? The first thing to determine is if the window is high enough and in the proper place when the dorr and window are fully closed and if there is enough pressure of the window against the window seal. There is an adjsutment for tip-in under the door. It is covered by a black rectangular rubber grommet at the front, you can see it if you lay on your back. Once you remove the balck grommet you will see the nut. Loosen the nut and the window regulator can be shifted inward or outward. Outward will increase the tip in pressure of the glass against the upper part of the gasket. May take some trial and error. Be careful not to move the regulator too far too fast. Just move it a little at a time, then tighten and test. Don't slam the door too hard in case you moved the regulator too much. Too much pressure can cause the window to rub against the regulator pulley at the top or even break.

 

Worse case scenario is that you may have to shift the glass forward or back, up or down which will require removing the door panel, insulator and speaker to readjust the position of the glass in the regulator

 

This link should show you all the adjustment on the regulator...

http://www.superchevy.com/how-to/140...rs-in-your-c5/

 

It could also be clogged "udders" do a search.