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Pimpal ... 3/16/2010

2006 Chevrolet Impala LT 6 Cyl 3.5L

Preventive Maintenance

Repetitive Tapping Louder Than a Click

When changing my A/C setting from circulatory airflow to forced airflow my whole climate control messes up, it doesnt want to switch from cold to hot air, from face and feet blower to feet or face alone or even defrost...all I hear is this really abnoxious tapping even if I turn the car off it still taps. Please help!!!!

1 Answer


Bobby 3/16/2010

Sounds like an issue with the blower unit. There are different motors/actuators that operate the doors for the blower ducts. It sounds like the actuators are acting up or the plastic doors they operate are stuck or have binded. Check under the passengers side dash sometimes the actuators are mounted on the bottom of the blower unit and can be checked/replaced without removing the entire unit.


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