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Home >> Hummer >> 2009 >> H3 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.7L - Introduction >> Repair Instructions >> Knock Sensor Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of KS Engine Wiring Harness Connector
    GM1352023Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle only high enough to access the knock sensor through the wheelhouse. Refer to Lifting and Jacking the Vehicle .
  2. Remove the left wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
  3. Disconnect the engine wiring harness electrical connector (3) from the knock sensor (1).
  4. Remove the knock sensor bolt.
  5. Remove the knock sensor (1).
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