I have a 91 Explorer and the moon/sunroof leaks a little, and the passenger side rear window, not the one in the door, leaks too. i know the side window bolts in, just wondering how difficult it is to do these two things.
Before you go tearing things apart,check the source.For the side window,place a dollar bill between the glass and the weatherstrip,latch the window and pull on the dollar.there should be some drag when pulling.