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Installation Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Heated Oxygen Sensor (Position 2)
    GM911099Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
    IMPORTANT: A special anti-seize compound is used on the O2S threads. New service sensors should already have the compound applied to the threads. Coat the threads of a reused sensor with anti-seize compound GM P/N 12377953 or equivalent.
  1. Install the O2S to the exhaust pipe.

    Tighten:  Use the J 39194  to tighten the O2S to 42 N.m (31 lb ft).

  2. Connect the HO2S electrical connector to the HO2S electrical harness connector.
  3. Install the HO2S electrical connector retaining clip to the HO2S electrical harness connector.
  4. Lower the vehicle.