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Home >> Cadillac >> 2011 >> STS RWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L - Repair Instructions >> Repair Instructions >> Secondary Fuel Tank Module Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: Secondary Fuel Tank Module, Hose Quick Connect Fitting And Fuel Tank Module Seal
    GM1994072Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  1. Install a NEW fuel tank module seal (4).
  2. Grasp the fuel transfer hose from inside the fuel tank.
  3. Partially install the secondary fuel tank module (2) to the fuel tank.
  4. Connect the fuel transfer hose quick connect fitting (1) to the port on the fuel tank module.
  5. Fig 2: Long Breaker-Bar And Lock Ring
    GM1994052Courtesy of GENERAL MOTORS COMPANY
  6. Press the secondary fuel tank module downward, aligning the module to the encapsulated ring.
  7. NOTE:

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

  8. Position the cam lock ring (3) to the fuel tank.
  9. NOTE:

    DO NOT use impact tools. Significant force will be required to install 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. Use the J 45722 (1) and a long breaker-bar (2) to install the fuel tank module lock ring (3), by turning clockwise, until fully seated.
  11. Fig 3: View Of Electrical Connector Fuel Tank Module
    GM1994041Courtesy of GENERAL MOTORS COMPANY
  12. Connect the electrical connector (1) to the secondary fuel tank module and engage the connector interlock.
  13. Install the fuel tank. Refer to Fuel Tank Replacement .