Secondary Fuel Pump Module: Removal

CAUTION: WHENEVER FUEL LINE FITTINGS ARE LOOSENED OR REMOVED, WRAP A SHOP CLOTH AROUND THE FITTING AND HAVE AN APPROVED CONTAINER AVAILABLE TO COLLECT ANY FUEL.

NOTE: Clean all fuel pipe and hose connections and surrounding areas before disassembling to avoid possible contamination of the fuel system. Spray the fuel pump module cam-lock ring tang with penetrating oil prior to attempting removal.

Remove fuel tank. Refer to FUEL TANK .
Discard fuel line from secondary fuel pump module.
Disconnect EVAP vent line from secondary fuel pump module.

Fig 1: Discarding fuel line from secondary fuel pump module
Courtesy of GENERAL MOTORS CORP.
Disconnect fuel level sender and fuel tank pressure sensor electrical connectors.

Fig 2: Disconnecting fuel level sender and fuel tank pressure sensor electrical connectors
Courtesy of GENERAL MOTORS CORP.

NOTE: To prevent retainer damage, do not attempt to remove the retainer with a 12 in. or shorter ratchet/breaker bar. Operation should be a smooth one hand operation while holding onto the lock ring.
Use the Fuel Tank Lock Ring Remover SA9156E and remove the fuel pump module retaining ring. A 1/2 in. breaker bar (approximately 18 in. long) will easily loosen and remove the lock ring.

Fig 3: Removing the fuel pump module retaining ring
Courtesy of GENERAL MOTORS CORP.

NOTE: To prevent bending of sending unit float arm during removal, lift the pump module up slightly to disengage the orientation tabs in the fuel tank and rotate the module 45°.
Remove secondary fuel pump module.
IMPORTANT: Always replace fuel pump module-to-tank seal (H-ring) when fuel pump module is removed.

Fig 4: Removing secondary fuel pump module
Courtesy of GENERAL MOTORS CORP.
Discard fuel pump module-to-tank seal.
If fuel level sending unit is not being replaced as well, remove fuel level sender. Refer to FUEL LEVEL SENDER UNIT AND FLOAT .