GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G3 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Knock Sensor Replacement

Removal Procedure

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


    Object Number: 2042543 Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Disconnect the electrical connector at the knock sensor.
  3. Remove the knock sensor retaining bolt (1) from the engine block.
  4. Remove the knock sensor (2).

Installation Procedure

    Object Number: 2042543 Size: SH
  1. Install the knock sensor (2).

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

  2. Install the knock sensor retaining bolt (1) and tighten to 20 N·m (15 lb ft).
  3. Connect the electrical connector at the knock sensor.
  4. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.