Knock Sensor 2 Replacement

Knock Sensor 2 Replacement

Removal Procedure

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. Remove the transaxle. Refer to Transmission Replacement in Automatic Transaxle - 4T65-E.
2. Drain the cooling system. Refer to Draining and Filling Cooling System (L26, L32 GE 47716 Fill) Draining and Filling Cooling System (L26, L32 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LS4 Static Fill) in Engine Cooling.
3. Remove the bolts (2) from the knock sensor heat shield (1).
4. Disconnect the knock sensor electrical connector (3) from the knock sensor.




5. Remove the knock sensor (4).

Installation Procedure

Notice: 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.




1. Install the knock sensor (4).

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

2. Install the knock sensor heat shield.

Tighten the bolts to 60 N.m (44 lb ft).

3. Connect the knock sensor electrical connector.
4. Install the transaxle.
5. Fill the cooling system. Refer to Draining and Filling Cooling System (L26, L32 GE 47716 Fill) Draining and Filling Cooling System (L26, L32 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LS4 Static Fill) in Engine Cooling.