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Home › GMC › 2012 › Yukon Hybrid, 4WD › Repair and Diagnosis › Engine Performance › Engine Control Systems › Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions › Repair Instructions › Knock Sensor 2 Replacement › Removal Procedure

Removal Procedure

    Fig 1: View Of Engine Wiring Harness Electrical Connector & Sleeve
    GM1964987Courtesy of GENERAL MOTORS COMPANY
  1. If equipped with 4WD, remove the right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side .
  2. Remove the right front wheel and tire. Refer to Tire and Wheel Removal and Installation .
  3. Working through the wheel well opening, disconnect the engine wiring harness electrical connector (3) from knock sensor.
    4. Fig 2: Right Side Knock Sensor & Bolt
    GM1402140Courtesy of GENERAL MOTORS COMPANY
  4. Remove the knock sensor bolt (739) and knock sensor (718).
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