The vibration/chatter on the driver's side window just missed the standard warranty period. So I stopped using the window, (about 39,000 miles).

Repair involves door dis-assembly and motor replacement: mega-bucks.

At about 55,000 miles the passenger side window started to do the same thing. Stopped using it.

Now: AC is very noisy (but functioning still) and I have limited opening and closing of the two front windows!