2005 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

Installation Procedure

    IMPORTANT:
    • When replacing the fuel pipes, always replace them with original equipment or parts that meet the GM specifications for those parts. The replacement pipes must have the same type of fittings as the original pipes in order to ensure the integrity of the connection.
    • DO NOT use copper or aluminum tubing to replace steel tubing. Only tubing meeting the 124-M specification or the equivalent is capable of meeting all pressure, corrosion and vibration characteristics necessary to ensure the durability standard required.
  1. Install the fuel pipes into the retaining clips.
    2. Fig 1: Chassis Fuel Feed Hose & Fuel Filter
    GM832909Courtesy of GENERAL MOTORS CORP.
  2. Remove the caps from the rear fuel pipes.
  3. Connect the chassis fuel feed hose at the fuel filter. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
    4. Fig 2: View Of Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS CORP.
  4. Install the fuel pipes into the transmission bracket clip.
  5. Install the fuel pipes into the bellhousing stud clip (4).
  6. Lower the vehicle.
  7. Install the left hand catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
  8. Remove the caps from the fuel rail pipes.
  9. Connect the fuel feed and return pipes (1, 2) to the fuel rail.
  10. Tighten the fuel filler cap.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  12. Use the following procedure in order to inspect for leaks:
    1. Turn ON the ignition, with the engine OFF, for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  13. Install the engine sight shield. Refer to Engine Sight Shield Replacement (6.0L (LQ4)) in Engine Mechanical.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.