second gen? move the 8 bolts. disconect ur tail light wires off of the bed and of coarse out of the tail lgihts. un screw 2-3 bolts on the gas filler neck, go under neither n remove the ground for the tank, visible near filler some where. get a friend or 2 to help lift n tada.
8 bolts, loosen the gas filler (1 plastic tab, 2 torx screws No need to take the gas tank door screws off), lic plate lights (Just take entire socket out of bumper by giving it a quarter turn or so), wiring harness under drivers side, 2 grounds (one on each side in the back connected to the light harnesses), all wiring clamps that hold the wires against the frame (Theres like 2 or 3 of em), and that should be it. The tank ground should not need to be taken out at all, it should go from the tank to the chassis and should not be connected to the body at all (at least I've never seen it connected).