To disassemble the fuel pump/fuel level sensor module, start by removing it from the vehicle. Disconnect the fuel level sensor leads from the harness clips on the side of the module. Disconnect the positive and ground wires from the top of the fuel pump and detach the connector housing from the bottom of the fuel pump cover. To remove the fuel level sensor unit, depress the locking tab and slide it until it's free of its retaining rails. Installation is the reverse of the removal.