Chevrolet Impala clicking sound from dashboard persists after engine shutdown on Chevrolet Impala

Some Chevrolet Impala owners report experiencing a persistent clicking sound from the dashboard even after the engine has been shut down, which can be concerning. This noise may indicate a faulty actuator door or another HVAC component, often originating from the dashboard area. Additionally, it could be related to issues such as a malfunctioning blend door stepper motor, lost calibration in the heater control module, or a faulty relay. To address this problem, owners are advised to identify the source of the noise, conduct regular inspections, and check for any loose components or wiring issues. It is recommended to have a qualified mechanic inspect the vehicle to diagnose and resolve the underlying cause of the clicking sound.