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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 357 (Engine Controls And Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Fuel Pressure Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Fuel Pressure Sensor And O-ring Seal
    GM1964194Courtesy of GENERAL MOTORS CORP.
  1. Lubricate a NEW fuel pressure sensor O-ring seal with clean engine oil.
  2. Install the NEW fuel pressure sensor O-ring seal (2) onto the fuel line fitting.
  3. Wrap a shop towel around the fuel pressure sensor fitting in order to absorb any fuel that may leak out.
  4. CAUTION:

    Refer to Fastener Caution .

  5. Install the fuel pressure sensor (1) to the fuel line.

    Tighten 

    Tighten the sensor to 15 N.m (11 lb ft).

  6. Fig 2: Chassis Wiring Harness Electrical Connector, Fuel Pressure Sensor And Fuel Pipe Bracket
    GM1964193Courtesy of GENERAL MOTORS CORP.
  7. Connect the chassis wiring harness electrical connector (1) to the fuel pressure sensor (2).
  8. Lower the vehicle.
  9. Use the following procedure in order 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.
  10. If equipped with 4WD, install the front propeller shaft. Refer to Front Propeller Shaft Replacement .