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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Fuel Pressure Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Fuel Pressure Sensor & O-ring Seal
    GM1964194Courtesy of GENERAL MOTORS COMPANY
  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: View Of Chassis Wiring Harness Electrical Connector, Fuel Pressure Sensor, Fuel Pipe Bracket & Wiring Harness Clip
    GM1964193Courtesy of GENERAL MOTORS COMPANY
  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 .