"TECH TIP: BUZZING NOISE FROM DASH
SYMPTOM: BUZZING NOISE COMING FROM DASH AREA.
REPAIR: OPERATE THE AIR-TEMP CONTROLS OR THE VENT AIR POSITION CONTROL SETTING. IF THE NOISE STOPS AFTER ADJUSTING THE CONTROLS, THE NOISE MAY BE CAUSED BY A FAULTY AIR TEMP ACTUATOR OR AIR VENT POSITION ACTUATOR. TO RESOLVE THIS CONCERN, IDENTIFY WHICH BLEND ACTUATOR IS THE SOURCE OF THE NOISE (SEE IMAGE) AND REPLACE IT."