GM Service Manual Online
For 1990-2009 cars only

For the front outlets, use the thumbwheel located below each outlet to change the direction of the airflow. Use the thumbwheel located next to the outlets to shut the airflow or to open the outlets and re-direct the air.

For the rear outlets, slide the lever left or right and up or down to change the direction of the airflow.

Operation Tips

    • Clear away any ice, snow or leaves from the air inlets at the base of the windshield that may block the flow of air into your vehicle.
    • Use of non-GM approved hood deflectors may adversely affect the performance of the system.
    • Keep the path under the front seats clear of objects to help circulate the air inside of your vehicle more effectively.