Youtube has several video's on this. I believe there's one or two screws in the handle and one possibly behind the interior door pull. I've done it, and I don't remember it being that hard.
Unlike older GM cars, this door panel is nearly all rigid molded plastic. It's firmly attached, once you get the screws out, you have to work the push pins. Get something flat, like a plastic feeler gauge, to push between the door and the panel. Go all the way around. The feeler gauge will stop when you get to a push pin.