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Home › Chevrolet › 2004 › Optra Base, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - 1.8L (L79) - Repair Instructions › Repair Instructions › Knock Sensor Replacement › Removal Procedure

Removal Procedure

    Fig 1: View Of Knock Sensor And Electrical Connector
    GM1256162Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution .
  1. Disconnect the negative battery cable.
  2. Raise and suitably support the vehicle.
  3. Disconnect electrical connector at the knock sensor (KS).
    4. Fig 2: View Of Knock Sensor And Mounting Bolt
    GM1256163Courtesy of GENERAL MOTORS CORP.
  4. Remove the bolt and the KS.
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