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Home >> Chevrolet >> 2004 >> Tracker 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.5L (LE8) (Introduction) >> Repair Instructions >> Heated Oxygen Sensor Replacement - Position 1 >> Installation Procedure
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Installation Procedure

    NOTE: Refer to Component Fastener Tightening Notice in Cautions and Notices.
    IMPORTANT: The new sensor comes with an antiseize coating on the sensor threads. Take precautions in order to prevent the removal of any of the antiseize coating prior to installation. If the sensor was removed and is being reinstalled, an antiseize compound must be applied to the threads before installation.
  1. Install HO2S1 (1) to the exhaust manifold with the J 29533-A  , J 39194-B  , or an equivalent.

    Tighten:  Tighten HO2S sensor to 45 N.m (32 lb ft).

  2. Connect the HO2S 1 electrical connector (1).
    3. Fig 1: View Of HO2S1 Electrical Connector
    GM707921Courtesy of GENERAL MOTORS CORP.


    NOTE: Refer to Component Fastener Tightening Notice in Cautions and Notices.
    IMPORTANT: The new HO2S 1 comes with an antiseize coating on the sensor threads. Take precautions in order to prevent the removal of any of the antiseize coating prior to installation. If the sensor was removed and is being reinstalled, an antiseize compound must be applied to the threads before installation.
  1. Install HO2S 1 (2) to the exhaust manifold (1) with the J 29533-A  , J 39194-B  , or an equivalent.

    Tighten:  Tighten HO2S sensor to 45 N.m (32 lb ft).

  2. Connect the HO2S 1 electrical connector.
    3. Fig 1: View Of HO2S 1 Electrical Connector
    GM707923Courtesy of GENERAL MOTORS CORP.
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