The rear window defogger will only work when the
ignition is in RUN. The rear window defogger
will stay on for about 20 minutes after the button is
pressed if you are traveling at slower vehicle
speeds. At higher vehicle speeds the rear window
defogger may stay on continuously. If turned
on again, the defogger will only run for about
10 minutes before turning off. The defogger can
be turned off by pressing the button again, by
turning the ignition to ACCESSORY or RUN, or
by turning off the engine.
The heated outside rearview mirrors will heat to
help clear fog or frost from the surface of the mirror
when the rear window defogger is on. See
Outside Automatic Dimming Heated Mirror on
page 136 for more information.
Notice: Do not use a razor blade or sharp
object to clear the inside rear window. Do not
adhere anything to the defogger grid lines
in the rear glass. These actions may damage
the rear defogger. Repairs would not be
covered by your warranty.
Outlet Adjustment
Use the levers, located in the middle of the front
outlets, to change the direction of the airflow.
Use the thumbwheel located between the outlets
to turn them on and off.
If your vehicle has rear seat outlets, adjust the
direction of the airflow using the lever in the center
of each outlet.
Operation Tips
•
Clear away any ice, snow, or leaves from the
air inlets at the base of the windshield that
could block the flow of air into your vehicle.
• Use of non-GM approved hood deflectors can
adversely affect the performance of the
system.
• Keep the path under the front seats clear of
objects to help circulate the air inside the
vehicle better.
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