Change the motor. These cars are notorious for this.
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
You have a stripped gear inside the door.
Bcm is going bad
The motor is mounted with rivets, you must drill out the rivets. The bolt must be short enough so that the window arms will not touch, this will cause the window to not go up or down all the way.
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.
Blown fuse in the fusebox.
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.
If it looks the same it will probably work.
If your talking the spring on a power window it helps raise the window when you activate the power window so it takes some stress off the motor.
try a stronger fuse, if that doesn't work then maybe your window motors are bad ?