You will have to remove the gas tank and install a fuel module.
The fuel sending unit is part of the fuel pump module. To replace it you must drop the gas tank.
Lower the Gas tank. Remove the sending unit/fuel pump from the tank and replace the unit. The sending unit and fuel pump come together.
Remove the fuel tank and then the sending unit. The fuel pump is on the fuel sending unit bracket.
Most likely the sending unit in the tank. Start there.
Do you mean the Temp sending unit, oil pressure sending unit, or fuel level sending unit?
You need to drop the fuel tank to gain access to the sending unit assembly.
Look inside of the gas tank and it is part of the module.
It Seems like you may have a fuel sending unit problem
where is oil sending unit located on 2003 chey impala 3.8 liter
There are several sending units in that vehicle such as the fuel sending unit, the oil pressure sending unit, the temperature sending unit. Need to know which one you want to change.
The fuel tank has to be removed to gain access to the fuel sending unit. The fuel sending unit and the fuel pump is replaced as a unit.