On my Friends 2001 Pontiac Grand AmGt the Front Drivers side window fell.
He was having trouble with the window going up and down via switch.
When we pullded the pannel apart to try to get the window up and wedged in place till we could figure out what is wrong.
We pulled out some broken white plastic peices.

Anyone know what could fix this situation.

 

I can only hope you have fixed this by now, but if not here is where I would start:
Pull off the passenger door card to see how the window should be seated. You might be able to reuse the plastic clips. If you have no luck doing this just go down to the dealership- they will be able to pull up a diagram of the door, and get the PNs for the clips which are likely one time use.
Best of luck!
carter