This a video showing how to replace the rear door glass on your own instead of going to a shop.
How to remove rear door glass on a chevy tracker.
Remove the door panel push pins and trim screws.
Remove all door panel electrical connectors.
Remove the door handle bezel by inserting a flat trim removal tool between the door panel and handle bezel to release the locking tabs.
93 chevy 4x4 door removal.
Lift the door panel up and out to release the door panel locking tabs.
Sorry for the video was bad but i made a quick one of how to do it since i could really find it myself so i had to do it on my own hopefully this helps someo.