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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.6L & 3.2L - Introduction >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2 >> Removal Procedure

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    2. Fig 1: Identifying Heated Oxygen Sensor Connector & Engine Harness Connector
    GM785793Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the heated oxygen sensor connector from the engine harness connector.
    3. Fig 2: Locating Heated Oxygen Sensor
    GM785785Courtesy 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).
  3. Remove the heated oxygen sensor using the J 39194  . See Special Tools and Equipment .
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