GMC 2008 Envoy - Manual (Page 162)

Outlet Adjustment
Use the air outlets located in the center and on the
side of the instrument panel to direct the airflow. Use
the thumbwheels near the air outlets to open or close
off the airflow.
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.
• 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/retailer before adding
equipment to the outside of your vehicle.
Rear Climate Control System
Your vehicle has one of the following rear climate
control systems. With either of these systems, the
rear climate controls will be disabled when the front
climate control system is in defrost. This occurs to
provide maximum airflow to clear the windshield.
The temperature of the air coming through the rear
outlets is determined by the front passenger temperature
setting. Use the mode knob to change the direction of
airflow (upper, bi-level or floor) to the rear seat area.
PWR (Power): Press this button to turn the rear climate
controls on or off.
H
(Panel): This position distributes air from the rear
console outlets.
)
(Bi-level): This position distributes air from the
second seat side floor outlets and the rear console
outlets.
6
(Floor): This position distributes air from the
second seat side floor outlets.
3-28