Knock Sensor: Service and Repair

Knock Sensor Replacement

Removal Procedure




1. Drain the cooling system. Refer to Cooling System Draining and Filling (9C1, 9C3 Static Fill) Cooling System Draining and Filling (LZE, LZ4, LZG, 9C1, 9C3, GE47716 Fill) Cooling System Draining and Filling (LZE, LZ4, LZG, Static Fill).
2. Disconnect the left knock sensor electrical connector, if required.




3. Remove the left knock sensor bolt, if required.
4. Remove the left knock sensor, if required.




5. Disconnect the right knock sensor electrical connector (2), if required.




6. Remove the right knock sensor bolt, if required.
7. Remove the right knock sensor, if required.

Installation Procedure




1. Position the right knock sensor to the engine block, if required.

Notice: Refer to Fastener Notice.

2. Install the right knock sensor bolt, if required.

Tighten the bolt to 20 N.m (15 lb ft).




3. Connect the right knock sensor electrical connector (2), if required.




4. Position the left knock sensor to the engine block, if required.
5. Install the left knock sensor bolt, if required.

Tighten the bolt to 20 N.m (15 lb ft).




6. Connect the left knock sensor electrical connector, if required.
7. Fill the cooling system. Refer to Cooling System Draining and Filling (9C1, 9C3 Static Fill) Cooling System Draining and Filling (LZE, LZ4, LZG, 9C1, 9C3, GE47716 Fill) Cooling System Draining and Filling (LZE, LZ4, LZG, Static Fill).