GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Cobalt 🢒 Engine 🢒 Engine Controls and Fuel - 2.4L 🢒 Knock Sensor Replacement

Removal Procedure

    Object Number: 1656089 Size: SH
  1. Disconnect the knock sensor (KS) electrical connector (3).

    2. Object Number: 1578476 Size: SH
  2. Remove the KS bolt.
  3. Remove the KS.

Installation Procedure

Important: Rotate the pigtail 90 degrees from vertical before securing the fastener.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1578476 Size: SH
  1. Install the KS.
  2. Install the KS bolt.

    3. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1656089 Size: SH
  3. Connect the KS electrical connector (3).