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Home › Buick › 2011 › Lucerne CX › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Controls And Fuel - 3.9L - Repair Instructions › Repair Instructions › Knock Sensor Replacement - Bank 1 › Removal Procedure

Removal Procedure

    Fig 1: Identifying Electrical Connector
    GM1612884Courtesy of GENERAL MOTORS COMPANY
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the three-way catalytic converter. Refer to Three-Way Catalytic Converter Replacement (V6) .
  3. Disconnect the knock sensor electrical connector (1).
    4. Fig 2: Identifying Knock Sensor
    GM1587771Courtesy of GENERAL MOTORS COMPANY
  4. Loosen and remove the knock sensor (1).
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