Okay, I just now did this so I could install Jimmy Jammers after a break in. I say this, because if you're pulling all your panels, you might want to do this at the same time.
So if your door is like mine, with a little drop down opening and stash space in the door, you need to:
1) Remove the grab handle. Two of the four screws securing it are extra long and secure it to the door sheet metal. The screws are under the caps at either end.
2) Remove the four screws holding the hinges for the drop down door. They also go into the sheet metal.
3) Then there are seven (again, at least on my van) of those plastic panel thingers that you have to carefully pry out of the holes in the door sheetmetal that secure them. The panel thingers are permanently affixed to the door panel, and in fact their connection to the door sheet metal is quite strong - you really could damage the door panel if you're not careful. I use one of those auto trim pullers, and also a thin piece of wood, maybe three inches wide by a foot long, to slide between the sheet metal and the trim panel, and then gently pry it off. I had three connectors along the top, two midway down a few inches in from the edges, and two along the bottom.
My description is poor, but you'll understand after steps #1 and #2, but if not, just post here or send me a message. Hope this helps.