Hi I'm Billy, and i will assist you.
You need to check the fuel level reader which is installed on the fuel pump housing in the fuel tank.
if the level reader looks ok and the potentiometer on it isn't broken, then you'll need a new fuel pump housing that contains the level reader.
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What does the level reader and the potentiometer look like? I had the tank dropped and saw the different lines and plug ins but I don't know for sure what you mean to look at.
In the tank you have the fuel pump submerged. The fuel pump housing contains a see-saw like contraption, that is the fuel level reader and potentiometer. Most probably you'll have to change the whole pump housing, as there are no accessories to it.