Knock Sensor: Service and Repair

Knock Sensor Replacement

Removal Procedure

WARNING: 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.

1. Disconnect the negative battery cable.
2. Raise the vehicle.

Knock Sensor:

3. Remove the splash shield.
4. Drain the cooling system.
5. Remove the knock sensor heat shield mounting bolt located under the core hole plug (or block heater if equipped).
6. Disconnect the knock sensor wiring harness connector from the knock sensor.
7. 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 sensor's ability to detect detonation.

Notice: Refer to Fastener Notice in Cautions and Notices.

Knock Sensor:

1. Install the knock sensor into the engine block.
- Tighten Knock sensor to 19 N.m (14 lb ft).
2. Install the knock sensor heat shield mounting bolt located under the core hole plug (or block heater if equipped).
3. Connect the knock sensor wiring harness connector to the knock sensor.
4. Install the splash shield.
5. Lower the vehicle.
6. Fill the cooling system.
7. Reconnect the negative battery cable.