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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.4L DOHC - Repair Instructions >> Repair Instructions >> Knock Sensor Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of Knock Sensor, Intake Manifold Support Bracket, And Bolt
    GM1289475Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution .
  1. Disconnect the negative battery cable.
  2. Remove the intake manifold support bracket bolts.
  3. Remove the intake manifold support bracket.
    4. Fig 2: View Of Knock Sensor
    GM1289476Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the knock sensor (KS) electrical connector.
  5. Remove the KS bolt.
  6. Remove the KS.
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