Owner’s Manual

Black plate (8,1)
GMC Yukon/Yukon XL Owner Manual - 2012 - CRC - 11/8/11
8-8 Climate Controls
REAR: For vehicles with the rear
heat and air conditioning controls.
Press to turn the rear climate control
system on or off. See Rear Climate
Control System (Rear Climate with
Rear Seat Audio) on page 8‑11 or
Rear Climate Control System (Rear
Climate Control Only) on page 8‑9.
Rear Window Defogger
The rear window defogger uses a
warming grid to remove fog from the
rear window.
1 (Rear Window Defogger):
Press to turn the rear window
defogger on or off. It automatically
turns off several minutes after it has
been activated. The defogger can
also be turned off by turning off the
engine. Do not drive the vehicle until
all the windows are clear.
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.
Heated Mirrors: Press
1 to help
clear fog or frost from the surface of
the outside mirror. See Power
Mirrors on page 2‑18.
Sensors
The solar sensor, located in the
defrost grille in the middle of the
instrument panel, monitors the solar
heat. Do not cover the solar sensor
or the system will not work properly.
The interior temperature sensors
located in the headliner above the
driver side seat and if equipped, in
the headliner above the second row
seats measure the temperature of
the air inside the vehicle.
There is also an exterior
temperature sensor located behind
the front grille. This sensor reads
the outside air temperature and
helps maintain the temperature
inside the vehicle. Any cover on the
front of the vehicle could cause a
false reading in the displayed
temperature.