2008 Vibe
My air inlet control servo motor operates just fine, until it has the flap all the way open to let the outside air in.
Then it continually tries to keep opening the flap, and at the end of each "try" it makes a loud clack. The flap stays open the whole time, but you can visibly see it strain to open it because it pushes harder on the already open flap, then makes the clack, then starts the cycle again.
Does the servo motor have a stop that would necessitate replacing the motor, or is there a separate limiter of some kind?