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 1

Removal Procedure


    Object Number: 1087793 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Disconnect the engine wiring harness electrical connector from the heated oxygen sensor (HO2S).
  3. Remove the HO2S from the exhaust manifold.

Installation Procedure

    Object Number: 1087793 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. Notice: Refer to Component Fastener Tightening Notice in the Preface section.

  2. Install the HO2S to the exhaust manifold.

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

  3. Connect the engine wiring harness electrical connector to the HO2S. Push in the connector until a click is heard and pull back to confirm a positive engagement.