GMC 2011 Sierra - Manual (Page 293)

Black plate (11,1) GMC Sierra Owner Manual - 2011
Climate Controls 8-11
The interior temperature sensor,
located in the headliner, measures
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.
The climate control system uses
the information from these sensors
to maintain comfort settings by
adjusting the outlet temperature, fan
speed, and the air delivery mode.
The system may also supply cooler
air to the side of the vehicle facing
the sun. The recirculation mode will
also be used as needed to maintain
cool outlet temperatures.
Air Vents
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 before
adding equipment to the outside
of the vehicle.