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Chevy impala blend door actuator locations.
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.
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First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Have a 2009 chevy impala lt 3 5 l v6 i have a have a 2009 chevy impala lt 3 5 l v6 i have a clicking noise underneath the dash with the blower motor is.
The noise happens when i open the door and last for about one minute after the doors open.