Installation Procedure

Fig 1: View Of Primary Fuel Tank Module

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If replacing the fuel pump module only, install the primary fuel level sensor. Refer to Fuel Tank Fuel Pump Module Fuel Level Sensor Replacement .
Install a NEW O-ring (2) and the primary fuel tank module (1).

Fig 2: Identifying Special Tool CH 45722

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Using the CH 45722 wrench , install the cam lock ring (1) by turning clockwise.
Install the secondary fuel pump module. Refer to Secondary Fuel Tank Module Replacement .

Fig 3: Identifying Electrical Connectors At Primary & Secondary Fuel Tank Modules

Courtesy of GENERAL MOTORS COMPANY

Connect the electrical connectors (1) to the primary and secondary fuel tank modules.
Connect the fuel and evaporative emission lines (2). Refer to Plastic Collar Quick Connect Fitting Service .
Install the fuel tank. Refer to Fuel Tank Replacement .