Where is the coolant sensor located on a 2009 Chevrolet hhr?

On a 2009 Chevrolet HHR, the coolant temperature sensor is typically located on the engine block, near the thermostat housing. It is usually found on the driver's side, towards the back of the engine. To access it, you may need to remove some components, such as the air intake duct, for better visibility and reach. Always consult the vehicle's repair manual for specific details and steps.