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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1137 (Engine Controls And Fuel - 3.6L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Level Sensor Replacement - Left Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Fuel Tank Module And Fuel Feed Hose
    GM1994039Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Gasoline/Gasoline Vapors Caution .
  1. Remove the fuel tank in order to gain access to the primary fuel tank module (1). Refer to Fuel Tank Replacement .
  2. GM1994041Courtesy of GENERAL MOTORS CORP.

    Release the interlock and disconnect the electrical connector (1) from the secondary fuel tank module. Position the connector and wire harness aside.

  3. GM1994052Courtesy of GENERAL MOTORS CORP.
    NOTE: Avoid damaging the lock ring. Use only J-45722 to prevent damage to the lock ring.
    IMPORTANT:
    • 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.
    • Do not allow the tool to come in contact with the fuel pipe while unlocking the cam lock ring.
  4. Use the J 45722  (2) and a long breaker-bar (1) in order to unlock the fuel tank module lock ring (3), by turning counterclockwise.
  5. Remove the cam lock ring.
  6. GM1994072Courtesy of GENERAL MOTORS CORP.

    Partially remove the primary fuel tank module (1) in order to gain access to the fuel transfer hose quick connect fitting (3). Use care not to damage the float arm (2).

  7. Disconnect the fuel transfer hose quick connect fitting (3).
  8. Remove the primary fuel tank module from the fuel tank.
  9. Discard the fuel tank module seal (4).
    10. Fig 2: Checking Lock Ring For Flatness
    GM1617750Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Some lock rings were manufactured with "DO NOT REUSE" stamped into them. These lock rings may be reused if the lock rings are not damaged or warped.
    • 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.
  10. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gage at 7 points.
  11. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  12. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
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