GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 909629  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the knock sensor wiring harness electrical connector.
  3. Remove the knock sensor.

Installation Procedure

Important:  DO NOT apply thread sealant to the sensor threads. The sensor threads are coated at the factory. Applying additional sealant affects the sensors ability to detect detonation.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 909629  Size: SH
  1. Install the knock sensor.
  2. Tighten
    Tighten the knock sensors to 25 N·m (18 lb ft).

  3. Connect the knock sensor wiring harness electrical connector.
  4. Lower the vehicle.