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Home >> Cadillac >> 2005 >> CTS Base, 3.6 7, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 3.6L - Introduction >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 1 >> Removal Procedure

Removal Procedure

  1. Turn the ignition OFF.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    3. Fig 1: View Of HO2S Electrical Connector - Replacement Bank 2, Sensor 1
    GM887890Courtesy of GENERAL MOTORS CORP.
  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).
  5. Remove the HO2S.
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