Blown fuse in the fusebox.
The VATS resistor on your key may be bad, or inside your steering column.
At or near the power steering pump.
285 bhp
Yes the power door can be used as it is the same as your door but you will have to switch the hardware inside of the door and use your hardware from your non power windows, everything will fit from your door into the power door.
There is no fuel pump shut off switch on a Pontiac Firebird. Instead, it has a fuel pump relay under the hood in the power distribution box.
In the Power Window Control Module there is a solid state relay that probably cannot be switched out on it's own. Other than that there is a 30A circuit breaker 15 in the fuse box.
try a stronger fuse, if that doesn't work then maybe your window motors are bad ?
Change the motor. These cars are notorious for this.
The wiring diagram for the power windows for a Pontiac Montana should be in the owner manual. A manual can be purchased if the original is not with the car.
This site has a step by step guide for an older Firebird, but it is identical to what you need for a 2001. http://shbox.com/page/windowmotor.html
V6's ranged anywhere from 200-212hp
If they are losing strenght, first try spraying silicone lube into the rubber weatherstrips where the window rides. A lot of times they become dry causing the windows to stick. If this does not help, unfurtunely you will have to replace the window motors. I have done many of these