GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Heated Oxygen Sensor Replacement - Sensor 2

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1376133 Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the electrical connector.
  3. Remove the rear heated oxygen sensor (HO2S) 2.

Installation Procedure

    Object Number: 1376133 Size: SH

    Important: A special anti-seize compound is used on the oxygen sensor threads. This compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or serviced sensors will already have the compound applied to the threads. If a sensor is removed from any engine and is to be reinstalled, the threads must have an anti-seize compound applied before reinstallation.

  1. Coat the threads of the HO2S 2 with an anti-seize compound, if needed.

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

  2. Install the HO2S 2.

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

  3. Connect the electrical connector.
  4. Connect the negative battery cable.