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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls - 5.7L - Introduction) >> Repair Instructions >> Heated Oxygen Sensor (HO2S) Replacement Bank 2 Sensor 1 >> Installation Procedure

Installation Procedure

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    IMPORTANT: Use special anti-seize compound on the HO2S threads. The compound consists of graphite suspended in fluid and glass beads. The graphite burns away, but the glass beads remain, making the sensor easier to remove. New or service sensors already have the compound applied to the threads. If you remove an oxygen sensor and if for any reason you must reinstall the same oxygen sensor, apply the anti-seize compound to the threads before reinstallation.
  1. Coat the threads of the HO2S with the anti-seize compound P/N 5613695, or the equivalent if necessary.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 1: Installing HO2S
    GM1413527Courtesy of GENERAL MOTORS CORP.
  2. Install the HO2S (1).

    Tighten:  Tighten the HO2S to 41 N.m (30 lb ft).

  3. Install the right side catalytic converter. Refer to Catalytic Converter Replacement - Right (LA3, LY9) , Catalytic Converter Replacement - Right (LY7) or Catalytic Converter Replacement - Right (LS6) in Engine Exhaust.
  4. Connect the HO2S electrical connector. Ensure that the harness is routed and retained as noted during disassembly.
  5. Lower the vehicle.
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