GM 10456238
Knock Sensor

The service procedure begins with engine ignition turned OFF along with vehicle elevators through suitable lifting equipment. The knock sensor removal process begins by interrupting the wiring harness connector followed by sensor extraction from the engine block. Apply no thread sealant to the new knock sensor because factory pre-coating safeguards the sensor's detonation detection functionality. Place the install knock sensor inside the engine block then fasten it to 19 N.m (14 lb ft). Reconnect the wiring harness connector then lower the vehicle afterward.

Service the knock sensor after turning OFF ignition then raising the vehicle. Remove the sensor from its position by disconnecting its wiring harness connector that exists on the engine block. You should avoid using thread sealant on the new sensor threads since they come with factory coating that could be damaged by additional sealant materials which might hinder detonation detection. Fasten the knock sensor into position in the engine block using a torque of 19 N.m (14 lb ft). Attach the wiring harness connector to the knock sensor and lower the vehicle.

The first step to service the knock sensor starts with ignition shutdown followed by vehicle lift. You must disconnect the knock sensor wiring harness connector from the knock sensor then extract the knock sensor from its position on the engine block. Add application of thread sealant to the sensor threads to the installation instructions of a knock sensor because it already comes factory-coated and extra sealant will prevent detonation detection. Lower the vehicle before connecting the wiring harness to the knock sensor that was installed into the engine block.

Starting by shutting off ignition power you must then elevate the vehicle with proper support systems while performing service on the knock sensor. First remove the knock sensor (KS) from its position by disconnecting its wiring harness connector. Then pull the KS out from the engine block. Installation of the KS requires sensor thread bins to remain untubeled due to factory thread coating so that the sensor's detonation detection capability remains uncompromised. Secure the KS into its place in the engine block while tightening it up to 19 N.m (14 lb ft). The wiring harness connector should be reconnected to the knock sensor while the vehicle lowers itself.

Connect the knock sensor electrical connector and lower the vehicle.

Connect the knock sensor electrical connector and lower the vehicle.

No, do not apply thread sealant to the sensor threads as it is coated at the factory.

Raise and support the vehicle.

Place the knock sensor into the engine block without applying thread sealant to the sensor threads, as they are factory-coated.

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

Turn OFF the ignition and raise the vehicle using appropriate lifting equipment.

Disconnect the knock sensor wiring harness connector from the knock sensor and remove the knock sensor from the engine block.

The two bolts from the knock sensor heat shield.

Tighten it to 19 N.m (14 lb ft).

Disconnect the electrical connector from the knock sensor and remove the sensor itself.

Disconnect the knock sensor electrical connector and remove the knock sensor.

Reinstall the knock sensor heat shield and tighten the bolts to 60 N.m (44 lb ft).

No, do not apply thread sealant to the sensor threads, as it is factory-coated and additional sealant will impair its ability to detect detonation.

Yes, do not apply thread sealant to the sensor threads, as they are factory-coated.

Ensure that no thread sealant is applied to the sensor threads, as they are pre-coated at the factory.

Ensure that no thread sealant is applied to the sensor threads, as they are pre-coated at the factory.

Tighten it to 19 N.m (14 lb ft).

Connect the knock sensor wiring harness electrical connector before lowering the vehicle.

Tighten it to 19 N.m (14 lb ft).

Additional sealant can impair the sensor's ability to detect detonation.

Turn OFF the ignition and raise the vehicle.

Do not apply thread sealant to the sensor threads, as they are pre-coated at the factory.

Connect the wiring harness connector to the knock sensor and lower the vehicle.

Turn OFF the ignition and raise the vehicle.

No, do not apply thread sealant to the sensor threads, as they are factory-coated and additional sealant can impair the sensor's ability to detect detonation.