GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 15945  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.
  2. Raise the vehicle.
  3. Disconnect the knock sensor wiring harness connector from knock sensor.
  4. Remove the knock sensor from 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 sensor's 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.
  4. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in engine electrical.