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In the 2013 Chevrolet Malibu, the knock sensor is situated in the engine compartment, right under the hood. It is positioned next to the engine towards the front of the compartment. Mounted on the engine manifold, this sensor monitors vibrations and abrupt actions resulting from engine detonation, sending this data to the car's BCM. Therefore, it serves as a crucial device to keep you informed about your car's well-being. It is essential to attend to a malfunctioning knock sensor promptly as it may obscure underlying issues and should not be overlooked for extended periods of time.
The knock sensor is typically located towards the front of the engine bay on the right side where the passenger seat would be.