Installation Procedure

Install the fuel level sensor to the fuel tank fuel pump module. Refer to Fuel Level Sensor Replacement .
Install a NEW fuel tank module seal (3).

Fig 1: Fuel Tank Fuel Pump Module
Courtesy of GENERAL MOTORS COMPANY
Install the fuel tank fuel pump module (2).
Install the fuel pump module lock ring (1).
Make sure that the fuel tank fuel pump module (2) align with the fuel tank line (1).

Fig 2: Fuel Tank Fuel Pump Module Alignment Mark
Courtesy of GENERAL MOTORS COMPANY
Using the CH-45722 wrench and a long breaker-bar, rotate the lock ring in a clockwise direction in order to lock the lock ring.
NOTE: Do NOT use impact tools. Significant force will be required to release the lock ring. The use of a hammer and screwdriver is not recommended. Secure the fuel tank in order to prevent fuel tank rotation.
Connect the fuel tank fuel pump module wiring harness (2) to the fuel tank fuel pump module (3).

Fig 3: Fuel Tank Fuel Pump Module, Fuel Tank Vent Pipe And Fuel Feed Pipe
Courtesy of GENERAL MOTORS COMPANY
Remove the caps from the fuel feed pipe and the fuel tank vent feed pipe.
Connect the fuel tank vent pipe (1) and the fuel feed pipe (4) to the fuel tank fuel pump module (3).
Install the fuel tank. Refer to Fuel Tank Replacement .