your window probably got disloged off the track. all you have to do is remove the door panel to get access to the track. loosen the bolt that secures the track in place then place your window back in the track. also put some silicone spray on the track.

to remove the door panel.. remove your speaker cover then take out the screws that are there and you have to disconnect your speaker. take out the screw/disconnect the window control tray and also the take out the screw behind the door handle and disconnect the power locks.. once you do all that you have to pull on the panel to get it out.