Inside on the kick panels each side you will find a small plate w small phillips screw top and bottom of the plate, remove those and the plate, and your door hinge bolts are in there, if you want to remove door and hinge, and as stated in above post.......MARK this stuff before you pull so you can put it back right where it is now
On the bed.....I havent pulled one in awhile so I may not be exact here, but there are either 6 or 8 places where it bolts to the frame.....be prepared to get dirty LOL
