How to repair window on Buick Lesabre?

How can I put my automatic window back on track in my 1988 Buick Lesabre, including which tools do I need and will it cost anything?
Mary, July 2005


done
1988 gm cars were bad about windows coming off the track
There are two plastic guides that clip into the window that keeps it in the track ......these clips were always coming loose
Would need to pull door panel and see if these clips are off
usually they fall into the bottom of the door

bg, October 2005