GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Notice: The Heated Oxygen Sensor (HO2S) uses a permanently attached pigtail and connector. Do not remove this pigtail from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor.

  1. Remove the oxygen sensor. Refer to Heated Oxygen Sensor Replacement Oxygen Sensor Replacement in Engine Controls.

  2. Object Number: 108137  Size: SH
  3. Remove the heat shield retaining bolts.
  4. Remove the oxygen sensor connector from the shield (2).
  5. Remove the heat shield.

Installation Procedure


    Object Number: 108137  Size: SH
  1. Install the heat shield.
  2. Install the oxygen sensor. Refer to Heated Oxygen Sensor Replacement Oxygen Sensor Replacement in Engine Controls.
  3. Install the oxygen sensor connector on the shield (2).
  4. Install the heat shield retaining bolts on the vehicle.