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Home >> GMC >> 2012 >> Acadia SLT, FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls/Fuel - 3.6L - Repair Instructions >> Repair Instructions >> Fuel Tank Module Replacement >> Removal Procedure
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Removal Procedure

WARNING:

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.

CAUTION:

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.

NOTE:

A NEW fuel tank module seal is necessary each time the fuel tank module is serviced. Obtain a NEW seal prior to beginning this service procedure.

    Fig 1: Identifying Fuel Pump Fuel Feed Line Quick Connect Fitting & Fuel Sender Wiring Harness Electrical Connector
    GM1860219Courtesy of GENERAL MOTORS COMPANY
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Disconnect the fuel pump fuel feed line quick connect fitting (1) from the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Disconnect evaporative emission (EVAP) canister vent front pipe quick connect fitting (4) from the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .
  4. Reposition the fuel pump fuel feed line and the EVAP canister vent front pipe out of the way.
  5. Disconnect the fuel sender wiring harness electrical connector (2) from the fuel tank pressure sensor.
  6. Disconnect the fuel sender wiring harness electrical connector (3) from the fuel tank module.
  7. Fig 2: Fuel Sender Lock Ring Wrench
    GM1860220Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Avoid damaging the lock ring. Use only J-45722 to prevent damage to the lock ring.

  8. Install the J 45722  fuel sender lock ring wrench (1) to the fuel tank module lock ring.
  9. Fig 3: Identifying Lock Ring
    GM1642096Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT use impact tools. Significant force will be required to release the lock ring. The use of a hammer and screwdriver is not recommended. Secure the fuel tank in order to prevent fuel tank rotation.

  10. Using the J 45722  fuel sender lock ring wrench and a long breaker-bar, rotate the lock ring counterclockwise unlocking the fuel tank module lock ring.
  11. Remove the J 45722  fuel sender lock ring wrench.
  12. Fig 4: View Of Fuel Tank Module Lock Ring
    GM1860221Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do Not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints.

  13. Remove the fuel tank module lock ring (1).
  14. Slowly raise the module (2) until the fuel level sensor float arm is just visible.
  15. NOTE:

    When removing the module from the fuel tank, be aware that the module reservoir bucket is full of fuel. The module must be tipped slightly during removal to avoid bending the fuel level sensor float arm.

  16. Tilt the module towards the lower front corner of the fuel tank to allow the level sensor float arm to clear the tank opening. Remove the module from the fuel tank.
  17. Carefully discard the fuel in the module reservoir bucket into an approved container.
  18. Remove and discard the fuel tank module seal (3).
  19. Remove the fuel level sensor, if required. Refer to Fuel Level Sensor Replacement .
  20. Fig 5: Checking Lock Ring For Flatness
    GM1617750Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Inspect the lock ring for damage due to improper removal or installation procedures. If damage is found, install a NEW lock ring.
    • Check the lock ring for flatness.
  21. Place the lock ring on a flat surface. Measure the clearance between to lock ring and the flat surface using a feeler gauge at 7 points.
  22. If the warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  23. If the warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.