GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Equinox 🢒 Engine 🢒 Engine Controls and Fuel - 3.4L 🢒 Heated Oxygen Sensor Replacement - Sensor 2

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

    2. Object Number: 1370518 Size: SH
  2. Disconnect the HO2S 2 harness connector (3).

    3. Important: Silicone based products will contaminate the HO2S. DO NOT use products containing silicone on or near the HO2S.

  3. Use a liquid penetrate before removing the sensor.
  4. Remove the HO2S 2 (2) from the exhaust pipe.

Installation Procedure

    Object Number: 1370518 Size: SH

    Notice: Silicone based products will contaminate the HO2S. Use only a nickel based anti-seize compound that does not contain silicone.

  1. Apply a small amount of anti-seize compound to the threads of the HO2S 2.

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

  2. Install the HO2S 2 (2).

    3. Tighten
    Tighten the HO2S 2 to 42 N·m (31 lb ft).

  3. Connect the HO2S 2 harness connector (3). Push in the connector until a click is heard, then pull back to confirm a positive engagement.
  4. Ensure the HO2S 2 harness pigtail connector is secure to the chassis.