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Home >> Chevrolet >> 2005 >> Epica LS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - 2.0L (L34 GMDAT) - Repair Instructions >> Repair Instructions >> Oxygen Sensor (O2S) Replacement >> Removal Procedure

Removal Procedure

    Fig 1: View Of O2S Connector
    GM1256157Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
    2. NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Cautions and Notices.
    NOTE: Refer to Heated Oxygen Sensor (HO2S) Wire Repair Notice in Cautions and Notices.
    NOTE: Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.
  2. Disconnect the O2S connector.
  3. Carefully remove the O2S from the exhaust manifold.
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