Thanks Phil,
The problem turns out that the clutch in the window motor was partially shot. I got a new window motor from NAPA. The funny thing is that the driver side motors are $20 more than the passenger side motors which have a reversed polarity and a mirror image mounting bracket. It was still only a $79 fix and about 2 hours of time including shopping. Not too bad, it's nice to have a window that works out here in Arizona during the summer to keep that hot air out of the car.