Installation Procedure

If the fuel level sending unit is being replaced, install the fuel level sending unit onto the new fuel pump. Refer to Fuel Level Sensor Replacement - Primary .

Fig 1: View Of Fuel Tank Module
Courtesy of GENERAL MOTORS CORP.
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.
Use the J 45722 to install the fuel pump lock ring. See Special Tools .
Connect the wiring harness to the primary fuel pump module and fuel tank pressure sensor.
Install the secondary fuel pump module. Refer to Fuel Tank Module Replacement - Secondary .
Install the fuel tank. Refer to Fuel Tank Replacement .