Climate Control System; (With Heater Only) - GMC Sierra Denali 2009 Owner's Manual

Rear Window Defogger
For vehicles with a rear window defogger, a warming
grid is used to remove fog from the rear window.
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(Rear): Press to turn the rear window defogger on
or off. An indicator light on the button comes on to
show that the rear window defogger is on.
The rear window defogger only works when the ignition
is in ON/RUN. The rear window defogger stays on
for approximately 10 minutes after the button is pressed,
unless the ignition is turned to ACC/ACCESSORY or
LOCK/OFF. The defogger can also be turned off
by turning off the engine.
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 the vehicle warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.

Climate Control System

(With Heater Only)

With this system the heating and ventilation can be
controlled.
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
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