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Home >> Cadillac >> 2017 >> XT5 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L (LGX) - Repair Instructions >> Repair Instructions >> Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail >> Installation Procedure

Installation Procedure

    Fig 1: Fuel Injection Fuel Rail Fuel Pressure Sensor
    GM4298372Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Applying force to the plastic housing of the sensor may damage the sensor. To tighten or loosen, apply force only to the attached hexagon.

    NOTE:

    Ensure the fuel rail threads are clean and free of any excess fuel, or the fuel injection fuel rail fuel pressure sensor will NOT seal properly.

  1. Lubricate the threads and sealing surface of the NEW fuel injection fuel rail fuel pressure sensor with one drop of clean engine oil.
  2. Install the NEW fuel injection fuel rail fuel pressure sensor (1) and hand tighten.
  3. Remove Fuel Injection Fuel Rail Fuel Pressure Sensor (1) and re-lubricate with one drop of clean engine oil.
    4. CAUTION:

    Refer to Component Fastener Tightening Caution .

  4. Install and tighten Fuel Injection Fuel Rail Fuel Pressure Sensor (1) to 33 N.m (24 lb ft)
    5. Fig 2: Fuel Injection Fuel Rail Fuel Pressure Sensor And Electrical Connector
    GM4298371Courtesy of GENERAL MOTORS COMPANY
  5. Connect Electrical Connector (1) @ Fuel Injection Fuel Rail Fuel Pressure Sensor (2)
    6. NOTE:

    If a fuel leak occurs at the fuel rail, the fuel rail will need to be replaced.

  6. Pressurize the fuel system and inspect for leaks.
  7. Install Engine Rear Noise Shield. Refer to Engine Rear Noise Shield Replacement 
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