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.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Drain the cooling system. Refer to Cooling System Draining and Filling .
3. Disconnect the knock sensor electrical connector (3) from the knock sensor.



4. Remove the knock sensor (4).

Notice: Refer to Fastener Notice in the Preface section.

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.

1. Install the knock sensor (4).

Tighten
Tighten the knock sensor to 19 N·m (14 lb ft).

2. Connect the knock sensor electrical connector.
3. Lower the vehicle.
4. Fill the cooling system. Refer to Cooling System Draining and Filling .