Knock Sensor 2 Circuit Malfunction (Bank 2)

Bank 2 knock sensor malfunction. Located under the intake manifold alongside the Bank 1 sensor. ACDelco. Replace both knock sensors and the wiring harness at the same time since the manifold is already off. Torque to 15 ft-lbs exactly. Check for AFM oil splash contaminating the sensors. GM has a service bulletin covering this applies. Your dealer can confirm whether an open service bulletin or warranty extension applies to your VIN. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.

Bank 2 knock sensor has failed. On the VQ35DE, both knock sensors are under the intake manifold. Replace both sensors and the harness together since the manifold is off. Hitachi. Check for coolant contamination from the intake coolant passage leaking onto the harness connectors. Clean and reseal all coolant passages while the manifold is removed. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.

Bank 2 knock sensor failure on the 1GR-FE V6. The sensor is under the intake manifold. Replace with an OE-quality Denso unit and inspect the wiring harness for heat damage. Both sensors should be replaced together to avoid removing the intake manifold twice. Torque to 20 ft-lbs. Replace the intake manifold gaskets while the manifold is off. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.