I noticed a lot of water in cargo area rear quarter wells. I removed the rear interior panels and washer unit. I see a drip and looking up under the wells see it is coming from the plastic press in fasteners that hold the black ABS plastic trim under the rear panel windows.
That is crazy. the window is dry all around, this is a hole through the rear quarter. There is no rust it just drips down the expanding plastic trim thing. Looked further and all 4 on each side leaking although not as bad.
I managed to cap the bad leak with 1/4 inch thread protector cap filled with LEXEL sealant but can not reach all.
The problem I have is how do you remove the exterior trim around cargo windows. For that matter what is best way for all the window/side trim to be removed?
There is a lot of plastic on GL that was omitted on my 93 parts car. I think later model trim was bolted in, access from interior.
looking for manual now any help would be appreciated.

Put a putty knife under the trim bottom, and pry upward.....carefully.  They just pop out.  Smear a dab of sealant on the clips (dry and clean) then reinstall.  There are rubber washers that seal it from teh factory but they rot over time.

Thank you, I was afraid of that. strange design...