Saturn 12636736 Sensor Assembly, Knock

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Lift the vehicle and secure on jackstands. For the rear cylinder bank (Bank 1), remove the engine block heat shield. For the front cylinder bank (Bank 2), remove the oil filter. On 2009+ models, remove the catalytic converter to access Bank 2 sensor. Disconnect the knock sensor connector and remove the retaining bolt. Unscrew the bolt and remove the sensor. To install, reverse these steps and tighten the bolt to the specified torque.

To remove the knock sensor, start by disconnecting the cable from the negative battery terminal. Then, raise the vehicle and support it securely on jackstands. If you're working on a 3.0L or 3.6L V6 model, remove the starter motor. For 2013 and later 3.6L models, the left-side knock sensor is located between the oil filter and the starter motor. If you're removing a knock sensor from the rear of the engine, remove the right catalytic converter. Next, disconnect the knock sensor electrical connector. Finally, unscrew the knock sensor retaining bolt and detach the sensor from the engine block. To install the knock sensor, simply reverse the removal steps and be sure to tighten the bolt to the specified torque.

Disconnect the knock sensor electrical connector.

To remove the knock sensor on a 2.0L supercharged engine and 2.2L & 2.4L engines, start by removing the starter motor. Then, disconnect the knock sensor electrical connector. Unscrew the knock sensor retaining bolt and remove the knock sensor.

You should depress the tab and disconnect the electrical connector.

Remove the starter motor.