I did do a search but it seems most are having regulator problems.

Pass front window on my 99 GT wont roll down for a while now. In the past I have had problems with the rear windows that fixed itself.

I hear no noise, just nothing.

Do these cars have bad switches? Could it be bad contacts on the switch? Is there relays in the circuits?? Could they be bad?

run a wire from the BATT to the motor and see if that rolls it up or down, if not, then its a bad motor, if it does could be switch, or relay..... basicly at that point bust out your volt meter and process of elimentation

take off the side pannel of the door, and click the button to roll it down, if nothing is moving in the motor, the motors dead. It might just need to be re oiled

That happened to my gp once. the gm dealer told me to hold the switch and slam the door at the same time. it actually worked. good luck