CTS V6-3.2L VIN N (2003)
Knock Sensor: Service and Repair
Knock Sensor (KS) 2 Replacement
REMOVAL PROCEDURE
1. Disconnect the knock sensor pigtail (1) from the electrical connector (2) and bracket.
2. Remove the accessory mounting bracket.
3. Remove the knock sensor pigtail from the retaining clips.
IMPORTANT: Observe the routing of the pigtail for proper installation.
4. Remove the bolt from the center of the knock sensor (2).
5. Remove the knock sensor (2) from the engine block.
INSTALLATION PROCEDURE
1. Thoroughly clean the mating surfaces of the knock sensor and the engine block. The entire contact surface of the knock sensor must lie directly on
the engine block.