Knock Sensor (KS) 1 Replacement

KNOCK SENSOR (KS) 1 REPLACEMENT

REMOVAL PROCEDURE
1. Raise and support the vehicle. Refer to Vehicle Lifting.

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.




2. Drain the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) Draining and Filling Cooling System (LY7 Static Fill) Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) in Cooling System. Service and Repair
3. Disconnect the knock sensor electrical connector (2).
4. Remove the knock sensor (1).

INSTALLATION PROCEDURE




1. Install the knock sensor (1).

NOTE: Refer to Fastener Notice in Service Precautions.

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.

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

2. Connect the knock sensor electrical connector (2).
3. Lower the vehicle.
4. Fill the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) Draining and Filling Cooling System (LY7 Static Fill) Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) in Cooling System. Service and Repair