Hummer 2006 H3 - Manual (Page 147)

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(Defrost): Turn the right knob on the control panel
to this mode to direct most of the air to the windshield,
and the side window outlets. When you select this mode,
the system runs the air conditioning system unless
the outside temperature is near or below freezing.
Recirculation is not available in this mode.
Do not drive the vehicle until all the windows are clear.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window when the key
is in the ignition and turned to ON.
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(Rear Defogger): Press the right knob on the
control panel to turn the rear window defogger on or off.
First press of this button will activate the rear window
defogger for 15 minutes and each subsequent activation
lasts 7 and one-half minutes.
Notice: Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would
not be covered by your warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.
Outlet Adjustment
Use the air outlets located in the center and on the side
of your instrument panel to direct the airflow.
Your vehicle has air outlets that allow you to adjust
the direction and amount of airflow inside the vehicle.
Move the louvers up or down to change the direction of
the airflow. Use the thumbwheel under the outlets to
change the direction of the airflow from left to right.
Operation Tips
• Enable recirculation mode for maximum air
conditioning performance.
• 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.
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