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Home >> Chevrolet >> 2021 >> Express 2500 LS, 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 >> Removal Procedure

Removal Procedure

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. GM5663525Courtesy of GENERAL MOTORS COMPANY

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

  3. 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.
    • Some fuel may leak from the fuel injection fuel rail fuel pressure sensor orifice after the sensor is removed. Dry the area around this orifice after the removal of the sensor using a lint free cloth and inspect the fuel injection fuel rail fuel pressure sensor sealing surface. The surface should be free of fuel, debris, and burrs.

    Disconnect the electrical connector.

  4. Fuel Injection Fuel Rail Fuel Pressure Sensor (1) - Remove