Removal Procedure

CAUTION: Hot engine coolant may cause severe burns. Although the cooling system has been drained, coolant still remains in the engine water jacket. This coolant will drain with the removal of the knock sensor.

Fig 1: View Of Knock Sensor 2 Heat Shield Bolts & Shield

Courtesy of GENERAL MOTORS CORP.

Remove the knock sensor heat shield bolts and shield.

Fig 2: Identifying Knock Sensor Wiring Harness & Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac-N-Fill) .
Disconnect the knock sensor wiring harness electrical connector from the knock sensor.

Fig 3: Identifying Knock Sensor (KS)

Courtesy of GENERAL MOTORS CORP.

Remove the knock sensor.