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Home >> Cadillac >> 2011 >> STS AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.6L - Repair Instructions >> Repair Instructions >> Fuel Pressure Sensor Replacement >> Removal Procedure
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Removal Procedure

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (High Pressure Pump) .
  2. Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement .
  3. Remove the intake manifold. Refer to Intake Manifold Replacement .
  4. Remove the foam insulator from the fuel rails.
  5. Fig 1: Identifying Fuel Pressure Sensor & Fuel Injection Fuel Rail
    GM1977753Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  6. Using a 27 mm socket, remove the fuel pressure sensor (1) from the fuel injection fuel rail (2). Discard the fuel pressure sensor.
  7. Allow any fuel to drain from the fuel rail and pressure sensor location.
  8. Dry the sealing cone in the fuel rail and the area around the sensor joint with a lint free cloth.
  9. Inspect the sealing cone in the fuel rail. The surface should be free of fuel, debris, and burrs.