I had the same problem. Mine was caused by the seal being bad on the side panel of the door (plastic piece between the door and the interior door panel). I found this out while I was replacing all my window motors. The seal they use wasn't even stuck to the door. I ended up using a windshield sealing kit from autozone which provided a thick layer of goo to seal. Worth checking out.
Originally Posted by erin0525
can anyone help me find where my leak is coming from?? everytime it rain hard or i wash my car the drivers side rear floor gets soaked. it doesn't seem to be getting the front wet, my uncles monte ss had the same problem and was the gasket around the cabin air filter but i completely chaulked it shut and it is still happening? any thoughts.
by the way it is a 2000 ssei