If you're removing the tank anyway, why pull the bed?Get some extra hands and pull the bed, doing it all from the bottom is a nightmare, one that I'm currently living.
I installed the first fuel pump on my '88 K1500 from the bottom--drop the straps, disconnect the harness and fuel tubes, drop the tank.
I installed the second fuel pump on that vehicle by removing the bed. Getting the bed off was at least as difficult as dropping the tank out the bottom.
I didn't know that was an option. It fits the pickup frame? Where is the fill cap routed to?I thought about getting rid of that long 34 gallon tank on mine and putting a suburban 42 gallon tank where the spare tire goes.
IF you remove the bed, it's not hard to move it around by yourself. A simple 2X4 to support the sides as it's lifted off is entirely sufficient--but bolt the chain around the lifting hook! No real need for multiple people, especially if you don't remove it completely--just loosen the bolts on the right side, remove the bolts on the left, and tip the bed up for clearance rather than pull it totally off.
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These are the connections you'll be removing. Don't forget to polish the frame for the ground strap 'n' bolt, so it makes good contact.
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While you have the sending unit out of the tank, connect it to the vehicle harness, turn the key on, and move the float back and forth while someone watches the gauge. With the float lifted, the gauge should read "full" or beyond full. With the float dropped, it should read empty.
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