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Home >> Chevrolet >> 2021 >> Express 2500 Base, Van Cargo Extended, 6.6L Eng VIN 7 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.6L (L8T) - Repair Instructions >> Repair Instructions >> Fuel Rail Pressure Sensor Replacement >> Installation Procedure

Installation Procedure

  1. GM5663529Courtesy 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.
    • 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.

    Lubricate the threads and sealing surface of the fuel injection fuel rail fuel pressure sensor (1) with one drop of clean engine oil.

  2. Install the fuel injection fuel rail fuel pressure sensor (1) and hand tighten.
  3. Remove the fuel injection fuel rail pressure sensor (1) from the fuel injection fuel rail and re-lubricate with one drop of clean engine oil.
    4. CAUTION:

    Refer to Component Fastener Tightening Caution .

  4. Fuel Injection Fuel Rail Fuel Pressure Sensor (1) - Install and tighten 33 N.m (24 lb ft)
  5. Connect the electrical connector.
  6. GM5663525Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Insulator (1) - Install - Fuel Pump Insulator Replacement 

    7. NOTE:

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

  7. Pressurize the fuel system and inspect for leaks.
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