GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Spark 🢒 Engine 🢒 Engine Controls - 1.0L 🢒 Heated Oxygen Sensor Replacement - Sensor 2

Removal Procedure

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


    Object Number: 1240897 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the front center console.
  3. Disconnect the heated oxygen sensor (HO2S2) connector.
  4. Remove the HO2S2.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1240897 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 service sensors will already have the compound applied to the threads. If a sensor is removed from any engine and if for any reason it is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.

  1. Install the HO2S2.

    2. Tighten
    Tighten the rear heated oxygen sensor to 35-44 N·m (26-33 lb ft).

  2. Connect the HO2S2 connector.
  3. Install the front center console.
  4. Connect the negative battery cable.