Buick Repair Questions? Ask a Mechanic for Answers ASAP
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My first guess is one of the door actuators for the Heater A/C System.
You can probably remove the glove box and start car and determine which one. The dash likely needs to be removed to replace and they do require a re calibration with a scan tool once replaced
OK. So when moving it makes loud noise? First thing to try. Top of windshield see if the trim is loose. try putting some duct tape down on it and see if it stops
Very common on these.