Originally Posted by 95BonnevilleSESC
If you push down and back on the leading (front) edge of the seat it will unhook from the body clips. That is for a 1992-1999. It may be slightly different for the 2000-2003. This is not "easy", but keep trying with short, forceful bursts and it should come right off.
There are two clips, one on each side about 8" to 12" in from the rear doors.
Another angle you can try that might be easier is to pull up the _back_ edge of the seat first. Stick your hands down between the bottom cushion and the seat back, grab the rear edge of the cushion and pull it up and out past the seat back. Once it'* lifted free of the seat back (it won't come up very far; just get the back edge into view), unhook the front edge from the two body clips on the floor.
When you're putting it back in again, you have to put the back edge in first, under the seat back (having somebody hold the seat belt buckles up out of the way is useful so they don't get buried), push the back edge into position, then get down and shove _really_ hard to seat the front bottom edge back into the floor clips.
Most all GM rear seats install this way.