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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 8.1L (Introduction) >> Repair Instructions >> Fuel Pressure Dampener Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Fuel Pressure Dampener O-Ring
    GM1247857Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the fuel pressure dampener O-ring with clean engine oil.
  2. Install the fuel pressure dampener O-ring.
    3. Fig 2: View Of Fuel Pressure Dampener Backup Ring
    GM1247853Courtesy of GENERAL MOTORS CORP.
  3. Install the fuel pressure dampener backup ring.
    4. Fig 3: View Of Fuel Pressure Dampener Clip
    GM1254422Courtesy of GENERAL MOTORS CORP.
  4. Install the fuel pressure dampener and clip (1).
  5. Install the engine sight shield. Refer to Engine Sight Shield Replacement in Engine Mechanical - 8.1L.
  6. Install the fuel fill cap.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  8. Use the following procedure to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.
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