1998 Chevy Cavalier window replacement

You need to remove the door handle, window crank (or PW switch) and interior door handle. The door panel is held in place with plastic retainers and pulls out.

Generally on GM cars the window is riveted to the regulator and the rivets must be drilled out and replaced with bolts. Once the rivets are drilled out, you can remove the window (sort of cock it 45 degrees) and pull out. You would have to loosen the regulator bolts to the door for more clearence.