Gas gauge doesn't work in a 2001 Ford Expedition. Would it be the fuel pump sender and pressure sender?

I'm hoping it could be something else that could cause the gas gauge not to work.

Added (1). I meant to say pressure sensor

Check all the fuses first. Then the gas tank has to come out and the wiring gets tested. Ground out the wire going to the gauge and see if the gauge reads full. If it does I'd put a new sending unit in the gas tank.