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Home >> Chevrolet >> 2014 >> Express 1500 Base, 4.3L Eng VIN X, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls & Fuel - 4.3 (LU3) - Repair Instructions >> Repair Instructions >> Fuel Tank Fuel Pump Module Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Identifying Fuel Tank Module
    GM1940986Courtesy of GENERAL MOTORS COMPANY
  1. Install a NEW fuel tank module O-ring seal (3) onto the fuel tank.
  2. NOTE:

    The bucket must be tipped slightly during installation to avoid bending the fuel level sensor float arm.

  3. Tilt the module toward the left side of the fuel tank to allow the fuel level sensor float arm to clear the tank opening. Install the module into the fuel tank.
  4. Lower the module assembly (2) into the tank.
  5. Position and install the fuel tank module lock ring (1).
  6. Fig 2: View Of Fuel Tank Module Lock Ring
    GM1940965Courtesy of GENERAL MOTORS COMPANY
  7. Install the J 45722  fuel sender lock nut wrench (1) to the fuel tank module lock ring.
  8. Fig 3: Identifying Lock Ring
    GM1642096Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Always replace the fuel tank module seal when installing the fuel tank module. Replace the lock ring if necessary. DO NOT apply any type of lubrication in the seal groove.

    Ensure the lock ring is installed with the correct side facing upward. A correctly installed lock ring will only turn in a counterclockwise direction.

  9. Using the J 45722  fuel sender lock nut wrench, and a long breaker-bar, rotate the lock ring counterclockwise, locking the fuel tank module lock ring.
  10. Fig 4: Identifying Fuel Tank Module Lock Ring
    GM1940960Courtesy of GENERAL MOTORS COMPANY
  11. Remove the J 45722  fuel sender lock nut wrench (1).
  12. Fig 5: Identifying Quick Connect Fittings
    GM1940956Courtesy of GENERAL MOTORS COMPANY
  13. Position the fuel and EVAP pipe ends to the module.
  14. Connect the EVAP front pipe quick connect fitting (3) to the module. Refer to Plastic Collar Quick Connect Fitting Service .
  15. Connect the EVAP pipe quick connect fitting (2) to the module. Refer to Plastic Collar Quick Connect Fitting Service .
  16. Connect the fuel tank fuel feed pipe quick connect fitting (1) to the module. Refer to Plastic Collar Quick Connect Fitting Service .
  17. Install the fuel tank. Refer to Fuel Tank Replacement (E26) , Fuel Tank Replacement (Without E26) .