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For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G8 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Heated Oxygen Sensor Replacement - Bank 2 Sensor 2

Removal Procedure

    Caution: Refer to Safety Glasses Caution in the Preface section.

    Caution: Refer to Vehicle Lifting Caution in the Preface section.

  1. Ignition Off.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

    3. Object Number: 1949882 Size: SH
  3. Disconnect the heated oxygen sensor (HO2S) electrical connector (1) from the wiring harness.
  4. Remove the HO2S wiring harness from the transmission case.

    5. Notice: Refer to Heated Oxygen and Oxygen Sensor Notice in the Preface section.


    Object Number: 1949886 Size: SH

    Important: Removal of the oxygen sensor is easier when the engine temperature is above 48°C (120°F).

  5. Remove the HO2S (1) from the exhaust pipe.

Installation Procedure

    Notice: Refer to Component Fastener Tightening Notice in the Preface section.


    Object Number: 1949886 Size: SH

    Important: New oxygen sensors should have a special anti-seize compound already applied to the sensor threads. If you are installing the original sensor, apply an approved anti-seize compound to the sensor threads.

  1. Install the HO2S.

    2. Tighten
    Tighten the HO2S to 40 N·m (30 lb ft).


    Object Number: 1949882 Size: SH
  2. Connect the HO2S electrical connector (1) to the harness connector.
  3. Install the HO2S wiring harness to the transmission case.
  4. Lower the vehicle.