GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1672557  Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Disconnect the electrical connector (3) from the right knock sensor, if required.

  3. Object Number: 1672558  Size: SH
  4. Disconnect the electrical connector (2) from the left knock sensor, if required.

  5. Object Number: 1672563  Size: SH
  6. Remove the appropriate knock sensor. Cylinder heads shown removed for clarity.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1672563  Size: SH
  1. Install the appropriate knock sensor.
  2. Tighten
    Tighten the sensor to 25 N·m (18 lb ft).


    Object Number: 1672558  Size: SH
  3. Connect the electrical connector (2) to the left knock sensor, if required.

  4. Object Number: 1672557  Size: SH
  5. Connect the electrical connector (3) to the right knock sensor, if required.
  6. Install the intake manifold. Refer to Intake Manifold Replacement .