Like many folks, my driver's side power window stopped working one day. At first it wouldn't go back up at all, then with some help it would. It started out doing this only once and a while. The culprit seemed to be the window runs as everyone talks about. But then the power window really stopped working to the point that it sounded like the motor gears were turning, but not moving the window, like the motor gears had stripped out. After pulling it all apart, I couldn't figure out the problem. The motor worked fine and the regulator and external tracks and gears looked just fine. Then I tore into the motor and found that the internal gearing in the motor had stripped out.