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Home >> Cadillac >> 2019 >> CTS Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.2L (LT4) - Repair Instructions >> Repair Instructions >> Fuel Rail Pressure Sensor Replacement >> Installation Procedure
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Installation Procedure

  1. To install the NEW fuel injection fuel rail fuel pressure sensor (1) properly, perform the following steps:
    GM4180496Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Component Fastener Tightening Caution .

    NOTE:
    • Do NOT apply force to the plastic housing of the fuel injection fuel rail fuel pressure sensor. ONLY apply force to the attached hexagon.
    • BEFORE installation of the fuel injection fuel rail fuel pressure sensor, the fuel injection fuel rail threads MUST be clean and free of any fuel or the sensor will NOT seal properly.
    1. Lubricate the sensor threads and sealing surface with one drop of clean engine oil.
    2. Install the sensor and hand tighten.
    3. Remove the sensor.
    4. Re-lubricate the sensor threads and sealing surface with one drop of clean engine oil.
    5. Install the sensor and tighten to 33 N.m (24 lb ft).
  2. Connect the electrical connector (1).
    3. NOTE:

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

  3. Pressurize the fuel system and inspect for leaks.
  4. Fuel Pump Insulator - Install - Fuel Pump Insulator Replacement 
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