Installation Procedure

Fig 1: View Of Fuel Tank Module

Courtesy of GENERAL MOTORS CORP.

If the fuel level sending unit is being replaced, install the fuel level sending unit onto the new fuel pump. Refer to Primary Fuel Level Sensor Replacement .
Insert the new primary fuel pump module assembly with the level sender and the new fuel pump-to-tank seal. Ensure the orientation tabs are aligned.

Fig 2: Identifying Lock Ring

Courtesy of GENERAL MOTORS CORP.

NOTE: Always replace the fuel sender seal when installing the fuel sender assembly. Replace the lock ring if necessary. Do not apply any type of lubrication in the seal groove.
Ensure the lock ring is installed with the correct side facing upward. A correctly installed lock ring will only turn in a clockwise direction.

Use the J 45722 in order to install the fuel sender lock ring. Turn the fuel sender lock ring in a clockwise direction.
Connect the wiring harness to the primary fuel pump module and fuel tank pressure sensor.
Install the secondary fuel pump module. Refer to Secondary Fuel Tank Module Replacement .
Install the fuel tank. Refer to Fuel Tank Replacement (AWD) or Fuel Tank Replacement (FWD) .