2001 Chevrolet Blazer Chevy S-10

To get the glass up and tailgate down, go in through the back. Next take off the inner handle for the tailgate, two screws, easy, then pull on the panel to unclip all the clips. That shouldn't be too hard because its screwed in on the sides. You should be able to pull it a few inches away from the glass, then you see where the latch for the glass is and how it works. Also, it's not the 'teeth' or that are actually touching the latch and holding it in place, it's a straight and flat bar slightly out and connected to it. Push that down (You can use a flathead screwdriver), and youll be able to push the glass up.

Hope that helps.