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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (Engine Controls/Fuel - Hybrid (LZ1) - Repair Instructions) >> Repair Instructions >> Knock Sensor 2 Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    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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