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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 >> Heated Oxygen Sensor Replacement - Sensor 2 >> Removal Procedure

Removal Procedure

    Fig 1: Identifying HO2S 2
    GM1343728Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution .
  1. Disconnect the negative battery cable.
  2. Disconnect the electrical connector.
  3. Fig 2: View Of HO2S 2
    GM1265321Courtesy of GENERAL MOTORS CORP.
  4. Remove the rear heated oxygen sensor (HO2S2).