When I drive in the rain my 89 GXE's back seatgets soaked ( I mean soaked) Anybody got an answer Id realy appreciate it.

 

j/k hehe

The sunroof might be leaking, mine does this, but when the cavity that the sunroof rolls back into drains it is usually on the front seats.

 

i would say if you have a sunroof thats your problem. the drain tubes are probably clogged. are there any marks on the headliner?

 

Also the possibility of having a leak in your C-pillar where the rear window seam is. I had a leak that was going into the trunk, thought it was the sunroof. In the process of taking trim bits off, behind the c-pillar was a debris mark where the water was running down. But clogged drain lines seem more likely.

 

Underneath the driver's side carpet in mine, it gets wet. There is a little bit of discoloration in the capet around the front of the sunroof. I think mine is leaking toward the front. And has since I've bought it, just haven't had all my rubber replaced yet, want to do it all at the same time. I think yours may be the rear glass though. Find the hose and blow some air up through the line in the trunk and go ahead and take off the rear panels inside to check for water deposits and dirt behind the back seat.