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Home >> Cadillac >> 2005 >> XLR >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Introduction >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 1 Sensor 2 >> Removal Procedure
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Removal Procedure

NOTE: Refer to Oxygen Sensor Notice in Cautions and Notices.
IMPORTANT: Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.
IMPORTANT: A special anti-seize compound is used on the oxygen sensor threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound P/N 5613695 or equivalent.
    Fig 1: Locating Oxygen Sensors
    GM932128Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the heated oxygen sensor electrical connector.
  3. Remove the rear oxygen sensor (3).