Its not a hard process, keep in mind ive done it several times.. - there are two bolts holding the tank up.. (the two straps, one bolt on each) - now, first go ahead and go to the bank of the tank on the top of it (above the rear-axle) and un-plug that sensor.. (thats a pricey lil sensor, i've broke one) - ok.. now get the truck up in the rear, put it on jack stands.. - this may be easier for you if you go ahead and take out the rear-driveshaft - unbolt those two strap bolts, (o i hope the tank is almost on E) go ahead and twist the straps over, they will come out all the way.. - now, get under the tank and slide it backwards it will begin to lower - there will be three hoses to disconnect - 1st at the front of the tank there is a plastic line dissconect it, it is fairly simple to disconnect - now the next two.. not so easy - go ahead and unplug the wiring off of the fuel pump - get it out of the way - if you want to on this next step since you are DEF. replacing the unit - go ahead and grab a good set of cutters and cut the plastic nipples off of the old unit in the tank where the fuel lines slide in, cut as far back as possible to make sure to leave some plastic on there.. - You will need a fuel line disconect tool i think the size is 3/8.. once those two lines have been freed up go ahead and slide the tank out.. now come back to the fuel lines w/ the plastic nipples still on them, take the quick disconnect tool and get it in place now you may need a pair of pliars, or a small phillips screwdrive that will fit into the plastic pretty snug.. go-ahead and get those plastic nipples off ok.. - The new pump you buy should come with a brand new wiring harness.. now, you will probably want to suader this on.. but you dont have to.. just make sure you cut the wires off of the old harness pretty far up as to get back into some good wiring.. - and the ground for the pump is bolted onto the frame just a lil ways up just trace the black wire to the bolt - go ahead and take this bolt off, clean the spot where it is grounded too reallllly well (this ground can directly affect your fuel hand readings) While i was under there, i went ahead and ran a bigger ground wire, this is not needed - but not only did i run a new ground, i also ran a thicker (about an 12ga) wire str8 to the ground on the battery to that bolt - not needed.. but.. i had alot of trouble.. once the new wiring is all hooked up, for safety go ahead and wrap it all back up with electrical tape.. and back to the tank, the fuel pump assembly is held in the tank by an O ring that is easily taken off with a hammer and a flat head screw-driver - notice the black plastic locking pin holding this retainer ring in slide it out and hit the ring on the side to knock it off - pull the old pump out.. go ahead and look into the tank if you see trash try to get all of it out - there is a rubber gasket that goes around the fuel pump the new one comes with a new gasket - you can use some petroleum jelly around it for easy of installation put the new rubber gasket in, and slide the fuel pump back in, getting it lined up as to how the old one came out - now this is the fun part, getting that o-ring to seat back down... but dont worry you will get it - installation of tank is reverse of taking it out..
