On the side of the fuel pump module which is in the fuel tank, we find the fuel level sensor, as well as the float assembly. Before removing the sensor, take the fuel tank and the fuel pump module out. Remove the 4-way electrical plug and cut off both sending unit wires at the connector so the locking collar falls out. You secure the sending unit to the pump module using a small lock tab and notch. To remove it, slide the sending unit down on the tracks while gently pushing the lock tab aside, always paying attention to how the sending unit's wires are routed. To install the sending unit, put it into the tracks with the wires pushed into place, then press down until you hear the lock click. Link the two sending unit wires to the 4-way connector and attach the locking collar and finally connect the 4-way electrical connector to the module. The final step is to replace the fuel pump module and the fuel tank.