GM 10378459
Fuel Tank

The first step for serving the Fuel Level Sensor in a steel tank requires the execution of the fuel pressure relief procedure to relieve pressure from the fuel system. Service of the steel tank Fuel Level Sensor begins with draining the Fuel Tank before removing both components: the Fuel Tank and modular fuel sender assembly. Remove the Fuel Level Sensor which is connected to the modular fuel sender unit. Install the Fuel Level Sensor by attaching it to the modular fuel sender and afterward reinstall both the fuel sender assembly together with the Fuel Tank. Add fuel into the tank before connecting the negative Battery Cable. To check for fuel leaks you must first turn the Ignition Switch to on for two seconds before going to off for ten seconds and finally returning to on to perform the leak examination.

Service of the Fuel Level Sensor located in a plastic tank requires a step which involves following the fuel pressure relief procedure to drain fuel system pressure. Remove the Fuel Tank content before removing it from its place. Begin by removing the fuel sender assembly followed by a disconnection of the Fuel Pump and fuel level sender electrical retaining clip located at the upper part of the modular fuel sender assembly. Using the procedure completely disengage the Fuel Pump and fuel level sender electrical connector while pressing down on the 3 tabs that maintain the upper fuel reservoir in place relative to the lower reservoir to efficiently remove the upper reservoir. Rotate the tab on the Fuel Level Sensor and push the sensor upward through the housing. Take the retaining clip off the electrical connector to extract the fuel level sender wires which must be noted for their positions. When installing the wires ensure they pass underneath the fuel level sender and verify that the tab effectively attaches itself. Drop the Fuel Level Sensor down its housing before inserting the upper reservoir into the lower reservoir while locking the three tabs in position. Connect the two wires into the connector and fasten it with the retaining clip before linking the Fuel Pump and Fuel Level Sensor electrical connector through the retaining clip. The installation process requires you to restore the fuel sender assembly while putting back the Fuel Tank filling up the tank space and binding the fuel fill cap. Turn on the ignition while the engine remains off for two seconds before turning it off for another ten seconds. After this period, repeat the process by turning on the ignition once more with the engine still off and finally check for fuel leaks.

Depress the tab and then depress the tab on the fuel level sensor to push it up and out of the housing.