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Installation Procedure

    Fig 1: Oxygen Sensor & Wiring Harness Connector
    GM1949877Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    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.

  1. Install the HO2S (2) to the exhaust crossover pipe assembly and tighten to 42 N.m (31 lb ft).
  2. Connect the HO2S electrical connector (1).
  3. Lower the vehicle.
  4. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
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