Being a 94 truck, you can rest assured the pump is in the tank. As for the pull bed, or drop tank question, it is up to you. I always pull the tank on every vehicle, unless someone has cut an access hole through the top of the body. There are a lot of people with a fuel pump change in their future, because the oil companys have changed the additives they put in the fuel we use, and it eats the seals in the old pumps. (they don't want you to know that) It is a lot easier to change an in tank pump than most people make it out to be. (Ah laziness) Hopefully the tank is low on gas, or empty, or it is gonna be really heavy.
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Yes you can change a fuel pump by removing the bed, but if you don't have much fuel in the tank it is way easier to just drop the tank all it really is is the heat shield and the tank straps super easy
siphon gas out drop the tank undo the harness twist the retaining ring pull pump. install in reverse.
probably be easier to just pull the truck bed off. usually requires unbolting 4-8 bolts holding bed on from inside the floor of bed. unhooking wiring harnwess and unhooking gas tank filler neck from hose leading to tank. you will need help of at least 3 others to pull the bed unless you devise a lift or a stand for your bed to sit on. think of it like a semi truck unhooking from a trailer. bed stays put truck moves forward. replace pump and back up under the bed and reattach. good luck
That depends on how much fuel is in the tank, if the tank is full or at least half, then removing the bed is easier, if the tank is less then half full removing the tank is easier. It all depends on where your fuel level is to what is easier. The only other thing that I can think of is that if you do not have a second person to help you remove the bed, then dropping the tank with a Jack would be easier, so it all depends on what your situation is.
Removing the bed is in no way easier than just dropping the fuel tank, and the fuel tank was designed to easily be dropped down from the vehicle. Who ever told you that removing the bed was the easier way is certainly not an auto technician or even a mechanic.
take the six bed bolt loose and then take three buddies slide the bed back put in the new pump slide it back n place and put the bed bolts back in. if u drop the tank u can easily break the hard plastis lines that go to the fuel tank. u only have to take the fill lines and taillight wires loose this way its alot quicker, and easier.
when mine went bad I pulled the bed off and moved it back enough toget to the top of the fuel tank it was easier to remove and replace versus dropping the tank tookme and my buddy about 2 hours rig a sling and use a cherry picker to lift bed don't forget to unplug wire harness hope this helps