GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 12755  Size: SH
  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Disconnect the knock sensor wiring harness connector from the knock sensor.
  4. Remove the knock sensor from the engine block.

Installation Procedure

Important:  Do Not apply thread sealant to sensor threads. The sensor is coated at factory and applying additional sealant will affect the sensors ability to detect detonation.


    Object Number: 15945  Size: SH
  1. Install the knock sensor into engine block.
  2. Connect the knock sensor wiring harness connector to the knock sensor.
  3. Lower the vehicle.