Power Window problem

I have a '99 4 door Yukon. The problem I am having is with the drives side power windows. The window does not power down "some of the time". This problem is sparatic and I cannot recreate the problem on demand. Any thoughts on what could be causing this?

Hi,
you may have a corroded connection or either the switch or the motor is worn out.
I think the switch module is $60.
Can you check the wires when it fails?
Take care, Eggert :bananasmi