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Home >> Cadillac >> 2005 >> CTS Base, 2.8 T, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.8L - Introduction >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 1 >> Removal Procedure

Removal Procedure

    Fig 1: View Of HO2S Electrical Connector - Replacement Bank 2, Sensor 1
    GM887890Courtesy of GENERAL MOTORS CORP.
  1. Turn the ignition OFF.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Disconnect the heated oxygen sensor (HO2S) electrical connector.
  4. Remove the HO2S electrical connector from the wiring harness bracket.
  5. Fig 2: View Of HO2S - Replacement Bank 2, Sensor 1
    GM887892Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Oxygen Sensor Notice in Cautions and Notices.
    IMPORTANT: Removal of the oxygen sensor is easier when the engine temperature is above 48°C (120°F).
  6. Remove the HO2S.