Fuel Tank Fuel Pump Module Replacement - Right Side

Fuel Tank Fuel Pump Module Replacement - Right Side

Special Tools

J39765-A - Fuel Sender Lock Ring Tool

Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) Battery Negative Cable Disconnection and ConnectionBattery Negative Cable Disconnection and Connection (LS3) Battery Negative Cable Disconnection and Connection.

2. Remove the right fuel tank. Refer to Fuel Tank Replacement - Right Side Fuel Tank Replacement - Right Side.

3. Place the fuel tank on a suitable work surface.




4. Disconnect the evaporative emission (EVAP) purge line (4) from the fuel pump module.

5. Disconnect the fuel pump module harness connector (5).

6. Disconnect the fuel tank pressure (FTP) sensor harness connector (1).

7. If replacing the fuel pump module, remove the FTP sensor (2). Refer to Fuel Tank Pressure Sensor Replacement Service and Repair.

8. Disconnect the jet line insert connector from the crossover tube to fuel tank opening.

Important: The fuel pump module is spring loaded and will spring upward when the locking ring is removed.


9. Using the J39765-A - Fuel Sender Lock Ring Tool , remove the fuel pump module locking ring.




10. Carefully remove the fuel pump module from the fuel tank, with the jet lines connected. Take care not to damage the fuel sender float arm.

11. Disconnect the jet line quick-connect connectors from the fuel pump module, noting the location of the lines for installation.

12. Remove the fuel pump module O-ring from the fuel tank opening.

13. Remove the jet line insert through the crossover tube to fuel tank opening.

Installation Procedure

1. Inspect the jet line insert for damage and replace if necessary.

2. Install the jet line insert through the crossover tube to fuel tank opening.




3. Install a new fuel pump module O-ring to the fuel tank opening.

Important: Pull on each connector to ensure that the connectors are properly latched.


4. Pull the jet line quick-connectors up through the pump module opening, connecting the lines to the pump module as previously noted.

5. Install the pump module into the fuel tank, taking care not to damage the float arm.

6. Compress and align the fuel pump module, while installing the lock ring.

7. Using the J39765-A - Fuel Sender Lock Ring Tool , fully lock the fuel pump module lock ring in place.

8. Using a DMM, verify the full and empty readings resistance reading of the fuel pump module. Turn the fuel tank upside down to achieve the full tank reading.

* Empty tank reading 247-253 ohms resistance

* Full tank reading 38.5-41.05 ohms resistance

Important: Pull the jet line insert connector to ensure that the insert is properly attached.


9. Connect the jet line insert connector into the crossover tube to fuel tank opening.




10. If replacing the fuel pump module, install the FTP sensor (2). Refer to Fuel Tank Pressure Sensor Replacement Service and Repair.

11. Connect the FTP sensor harness connector (1).

12. Connect the fuel pump module harness connector (5).

13. Connect the EVAP purge line (4) from the fuel pump module.

14. Install the right fuel tank. Refer to Fuel Tank Replacement - Right Side Fuel Tank Replacement - Right Side.

15. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (LS7 or LS9) Battery Negative Cable Disconnection and ConnectionBattery Negative Cable Disconnection and Connection (LS3) Battery Negative Cable Disconnection and Connection.