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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Engine Controls/Fuel - 3.6L - Repair Instructions >> Repair Instructions >> Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 >> Installation Procedure

Installation Procedure

NOTE:

A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to reinstalled, the threads must have anti-seize compound applied before the reinstallation.

    Fig 1: Identifying Heated Oxygen Sensors & Exhaust Manifold
    GM1858130Courtesy of GENERAL MOTORS COMPANY
  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
    2. CAUTION:

    Refer to Fastener Caution .

  2. Install the HO2S (4) to the exhaust pipe.

    Tighten 

    Tighten the sensor to 42 N.m (31 lb ft).

    3. Fig 2: Identifying Heated Oxygen Sensor Electrical Connector
    GM1861456Courtesy of GENERAL MOTORS COMPANY
  3. Connect the HO2S electrical connector (4) to the engine wiring harness electrical connector (1).
  4. Install the CPA retainer (3).
  5. Lower the vehicle.
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