2018 Chevrolet Silverado 1500 Owner’s Manual — Air Vents

Use the sliding knobs on the center and side air vents to direct the airflow. Use the thumbwheels near the air vents to open or close off the airflow.

Air vents blow warm air on the side windows in cold weather. If Floor, Defog, or Defrost modes are selected, a small amount of air will come from the vents close to the window. If the airflow is shut off using the thumbwheels, warm air will be directed to the other instrument panel vents. This is normal operation.

Use the thumbwheels to turn vent airflow on or off based on the mode selected.

Operation Tips

Clear away any ice, snow,

or leaves from air inlets at the base of the windshield that could block the flow of air into the vehicle.

Clear snow off the hood to improve visibility and help decrease moisture drawn into the vehicle.

Keep the path under the front seats clear of objects to help circulate the air inside of the vehicle more effectively.

Use of non-GM approved hood deflectors can adversely affect the performance of the system. Check with your dealer before adding equipment to the outside of the vehicle.