GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 945742  Size: SH
  1. Turn the ignition OFF.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Reposition the wiring harness heat shield to obtain access.
  4. Remove the knock sensor (KS) electrical connector.

  5. Object Number: 860801  Size: SH
  6. Remove the KS bolt.
  7. Remove the KS.

Installation Procedure


    Object Number: 860801  Size: SH
  1. Install the KS.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the KS bolt.
  4. Tighten
    Tighten the KS bolt to 23 N·m (17 lb ft).


    Object Number: 945742  Size: SH
  5. Install the KS electrical connector.
  6. Install the wiring harness heat shield to the original position.
  7. Lower the vehicle.