LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2009 >> H3 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.7L - Introduction >> Repair Instructions >> Fuel Tank Module Replacement >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

    Fig 1: Identifying Fuel Tank Lines
    GM1564236Courtesy of GENERAL MOTORS CORP.
    CAUTION: Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:
    • The fuel pipe connections
    • The hose connections
    • The areas surrounding the connections
  1. Remove the fuel tank. Refer to Fuel Tank Replacement .
  2. Using a flare nut wrench and a back up wrench, disconnect the fuel feed line (2) fitting from the fuel tank module.
  3. Disconnect the EVAP vapor line (1) from the fuel tank vent valve.
  4. Disconnect the EVAP vapor line (3) quick connect from the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .
  5. Reposition the fuel feed and EVAP lines in order to access the lock ring.
    6. Fig 2: Identifying Lock Ring
    GM1642096Courtesy of GENERAL MOTORS CORP.
    CAUTION: Avoid damaging the lock ring. Use only J-45722 to prevent damage to the lock ring.
    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.
    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.
  6. Use the J 45722  and a long breaker-bar in order to unlock the fuel sender lock ring. See Special Tools . Turn the J 45722  fuel sender lock ring in a counterclockwise direction. See Special Tools .
  7. Remove the cam lock ring from the fuel tank.
    8. Fig 3: Identifying Vapor Line Quick Connect
    GM1564237Courtesy of GENERAL MOTORS CORP.
  8. Raise the fuel tank module upward far enough to access the vapor line quick connect under the module cover.
  9. Disconnect the vapor line quick connect (1) from the fuel tank module. Refer Plastic Collar Quick Connect Fitting Service .
    10. Fig 4: View Of Cam Lock Ring & Fuel Tank Module
    GM1564235Courtesy of GENERAL MOTORS CORP.
  10. Tilt the module (2), to allow the fuel level sensor arm and float to clear the fuel tank module opening.
  11. Remove the fuel tank module from the fuel tank.
  12. Remove the fuel tank module seal. Do not reuse the seal.
    WARNING: Drain the fuel from the fuel sender assembly into an approved container in order to reduce the risk of fire and personal injury. Never store the fuel in an open container
  13. Clean the fuel module sealing surfaces.
    14. Fig 5: Checking Lock Ring For Flatness
    GM1617750Courtesy of GENERAL MOTORS CORP.
    NOTE:
    • Some lock ring were manufactured with DO NOT REUSE stamped into them. These lock rings may be reused if they 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.
  14. Place the lock ring on a flat surface. Measure the clearance between to lock ring and the flat surface using a feeler gage at 7 points.
  15. If the warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  16. If the warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
scientia non olet · About LEMON Manuals