1. Disconnect the negative battery cable.
2. Raise the vehicle.
3. Drain the cooling system. Refer to Cooling and Radiator .
4. Disconnect the wiring harness connector from the Knock Sensor.
5. Remove the Knock Sensor from engine block.

Important: Do Not apply thread sealant to sensor threads. Sensor is coated at the factory and applying additional sealant will affect the sensor's ability to detect detonation.

1. Hand start the Knock Sensor into the engine block.

Tighten
Tighten the Knock Sensor to 19 N·m (14 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Connect the wiring harness connector to the Knock Sensor.
3. Lower the vehicle.
4. Fill the cooling system. Refer to Cooling and Radiator.
5. Connect the negative battery cable.