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Installation Procedure

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    Fig 1: View Of HO2S 1
    GM1828436Courtesy of GENERAL MOTORS CORP.
    NOTE: A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound applied to the threads. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation.
  1. If reinstalling the old HO2S, coat the threads with anti-seize compound GM P/N 12377953 or equivalent.
  2. CAUTION: Refer to Fastener Caution .
  3. Using the J 39194  , install the position 1 HO2S and tighten to 42 N. See Special Tools .m (31 lb ft).
  4. Fig 2: Identifying CPA Retainer & HO2S Connector & Clip
    GM1825750Courtesy of GENERAL MOTORS CORP.
  5. Connect the engine wiring harness electrical connector (1) to the HO2S electrical connector (3).
  6. Install the HO2S electrical connector clip (2) to the camshaft cover.
  7. Install the CPA retainer.
  8. Close the hood.