GM Service Manual Online
For 1990-2009 cars only

Use the lever located in the center of each outlet by moving it either up and down or side-to-side, to change the direction and amount of airflow in the vehicle.

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 the vehicle.
    • Do not use non-GM approved hood deflectors as they could adversely affect the performance of the system.
    • Keep the path under the front seats clear of objects to help circulate the air inside of the vehicle more effectively.
    • When an objectionable odor outside the vehicle is encountered, use the recirculation mode, with the temperature knob at a comfortable setting to prevent the odor from entering the vehicle through the ventilation system. This can be helpful when driving through a long tunnel with poor ventilation. However, extended usage of this mode in cold or cool weather can cause window fogging.

There are four main air outlets on the instrument panel. Use the lever located in the center of each outlet by moving it either side-to-side or up and down, to change the direction and amount of airflow in the vehicle. The center thumbwheel does not control the main outlets.

Rear Seat Air Outlet

For vehicles with this feature, the rear seat air outlet is located in the center of the instrument panel above the two main center outlets.

Use the thumbwheel in the center of the outlet to turn the airflow on or off. The horizontal vent vane does not move.

Operation Tips

    • Clear away any ice, snow, or leaves from the air inlets at the base of the windshield that can block the flow of air into the vehicle.
    • Do not use non-GM approved hood deflectors as they could adversely affect the performance of the system.
    • Keep the path under the front seats clear of objects to help circulate the air inside of the vehicle more effectively.
    • When an objectionable odor outside the vehicle is encountered, use the recirculation mode, with the temperature knob at a comfortable setting to prevent the odor from entering the vehicle through the ventilation system. This can be helpful when driving through a long tunnel with poor ventilation. However, extended usage of this mode in cold or cool weather can cause window fogging.