Knock Sensor: Service and Repair

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.

REMOVAL PROCEDURE
1. Remove the negative battery cable.
2. Raise vehicle.
3. Remove the splash shield, drain cooling system.
4. Remove the knock sensor heat shield mounting bolt located under freeze plug (or block heater if equipped).
5. Remove the knock sensor wiring harness connector from knock sensor.
6. 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.

NOTE: Refer to Fastener Notice in Service Precautions.

1. Install the knock sensor into engine block.

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

2. Install the knock sensor heat shield mounting bolt located under the freeze plug (or block heater if equipped).
3. Install the knock sensor wiring harness connector to the knock sensor.
4. Install the splash shield.
5. Lower the vehicle.
6. Fill the cooling system. Refer to Cooling and Radiator.
7. Connect the negative battery cable.