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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 282 (Engine Controls And Fuel - 6.2L (LT4) - Repair Instructions) >> Repair Instructions >> Fuel Rail Pressure Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM4180496Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    To tighten or loosen the fuel injection fuel rail fuel pressure sensor, apply force ONLY to the attached hexagon. Applying force to the plastic housing of the sensor may damage the sensor.

    NOTE:

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

    Lubricate the threads and sealing surface of the fuel rail pressure sensor with one drop of clean engine oil.

  2. Install the fuel rail pressure sensor (2) and hand tighten.
  3. Remove the fuel rail pressure sensor (2) from the fuel injection fuel rail (3) and re-lubricate with one drop of clean engine oil. Adhesives, Fluids, Lubricants, and Sealers
  4. Fuel Rail Pressure Sensor (2) @Fuel Injection Fuel Rail (3) - Install and tighten 32.5 N.m (24 lb ft)
  5. Electrical Connector (1) @Fuel Rail Pressure Sensor (2) - Connect
  6. NOTE:

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

  7. Fuel Pump Insulator - Install - Fuel Pump Insulator Replacement 
  8. Pressurize the fuel system and inspect for leaks.
  9. Perform the fuel pump trim reset. Fuel Pump Trim Reset