2014 GMC SIERRA air conditioning

Black plate (4,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
1-4 In Brief
20.Climate Control Systems (with
Heater Only) on page 8-1 or
Climate Control Systems (with
Air Conditioning) on page 8-3
(If Equipped).
Dual Automatic Climate Control
System on page 8-5
(If Equipped).
21. Traction Control/Electronic
Stability Control on page 9-54.
Pedal Adjust Switch
(If Equipped). See Adjustable
Throttle and Brake Pedal on
page 9-24.
Cargo Lamp on page 6-7.
Parking Assist Button
(If Equipped). See Assistance
Systems for Parking or Backing
on page 9-61.
Lane Departure Warning
(LDW) on page 9-66
(If Equipped). Hill Descent Control Switch
(If Equipped). See
Hill Descent
Control (HDC) on page 9-56.
Exhaust Brake (If Equipped).
See “Exhaust Brake” in the
Duramax diesel supplement.
Power Take Off (PTO) Button
(If Equipped). See the
Duramax diesel supplement.
Auxiliary Button (If Equipped).
See Add-On Electrical
Equipment on page 9-99.
22. USB Port on page 7-19.
23. Power Outlets on page 5-6.
24. Power Outlet 110V Alternating Current (If Equipped). See
Power Outlets on page 5-6.
25. Passenger Airbag On-Off Switch (If Equipped) (Out of
View). See Airbag On-Off
Switch on page 3-28.Initial Drive
Information
This section provides a brief
overview about some of the
important features that may or may
not be on your specific vehicle.
For more detailed information, refer
to each of the features which can be
found later in this owner manual.
Remote Keyless Entry
(RKE) System
The RKE transmitter functions may
work from up to 60 m (197 ft) away
from the vehicle.

Black plate (18,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
1-18 In Brief
Climate Control System (with Air Conditioning)
1. Fan Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Control
4. Defrost5. TEMP (Temperature Control)
6. Air Recirculation
7. Rear Window Defogger

Black plate (19,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
In Brief 1-19
Dual Automatic Climate Control System
1. Driver Temperature Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Controls
4. Fan Control
5. Defrost
6. Passenger Temperature Control
7. AUTO (Automatic Operation)
8. Air Recirculation9. Power Button
10. Rear Window Defogger
11. SYNC (Synchronized
Temperature)
See Climate Control Systems (with
Heater Only) on page 8-1 orClimate
Control Systems (with Air
Conditioning) on page 8-3 orDual
Automatic Climate Control System
on page 8-5 (If Equipped).
Transmission
Range Selection Mode
The Range Selection Mode switch,
if equipped, is on the shift lever.
To enable:
1. Move the shift lever to the
M (Manual Mode) position. The
current range will display next to
the M. This is the highest
attainable range with all lower
gears accessible. As an
example, when 5 (Fifth) gear is
selected, 1 (First) through
5 (Fifth) gears are available.
2. Press the plus/minus buttons on the shift lever to select the
desired range of gears for
current driving conditions. See
Manual Mode on page 9-37.

Black plate (6,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
2-6 Keys, Doors, and Windows
Remote Vehicle Start
If equipped, this feature starts the
engine from outside of the vehicle.
It may also start up the vehicle's
heating or air conditioning systems
and rear window defogger. Normal
operation of the system will return
after the key is turned to the ON/
RUN position.
The climate control system will use
the previous settings during a
remote start. The rear defog may
come on during remote start based
on cold ambient conditions. The
rear fog indicator light does not
come on during remote start.
If the vehicle has heated seats and
the feature is turned on in vehicle
personalization, the heated seats
will turn on during colder outside
temperatures and will shut off when
the key is turned to ON/RUN. See
Heated and Cooled Front Seats on
page 3-8.Laws in some communities may
restrict the use of remote starters.
For example, some laws may
require a person using the remote
start to have the vehicle in view
when doing so. Check local
regulations for any requirements on
remote starting of vehicles.
Do not use the remote start feature
if the vehicle is low on fuel. The
vehicle may run out of fuel.
The RKE transmitter range may be
less while the vehicle is running.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System on page 2-3
orVehicle
Personalization on page 5-45.
/(Remote Vehicle Start): This
button will be on the RKE
transmitter if the vehicle has remote
start. Starting the Engine Using Remote
Start
1. Aim the RKE transmitter at the
vehicle and press and
release
Q.
2. Immediately press and hold
/
until the turn signal lamps flash
or for at least four seconds.
When the vehicle starts, the
parking lamps will turn on. The
doors will be locked and the
climate control system may
come on.
The engine will continue to run
for 10 minutes. Repeat the steps
for a 10-minute time extension.
Remote start can be extended
only once.
After entering the vehicle during a
remote start, insert and turn the key
to ON/RUN to drive the vehicle.

Black plate (16,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
2-16 Keys, Doors, and Windows
Resetting the Power Folding
Mirrors
Reset the power folding mirrors if:
.The mirrors are accidentally
obstructed while folding.
.They are accidentally manually
folded/unfolded.
.The mirrors will not stay in the
unfolded position.
.The mirrors vibrate at normal
driving speeds.
Fold and unfold the mirrors three
times using the mirror controls to
reset them to their normal position.
A popping noise may be heard. This
sound is normal after a manual
folding operation.
Manual Folding
If equipped, push the mirror toward
the vehicle to fold. Push the mirror
outward to return to its original
position. Manually fold the mirrors inward to
prevent damage when going
through an automatic car wash.
Auto Folding Mirrors
If equipped, with the ignition off,
press and hold
Qon the RKE
transmitter for approximately
one second to fold the mirrors.
Press and hold
Kon the RKE
transmitter to unfold the mirrors.
See Remote Keyless Entry (RKE)
System Operation on page 2-3.
This feature is turned on and off
through Vehicle Personalization.
See Vehicle Personalization on
page 5-45.
Turn Signal Indicator
If equipped, indicator lights on the
mirror flash in the direction of the
turn or lane change.
Heated Mirrors
1
(Rear Window Defogger):
If equipped, the rear window
defogger also heats the side
mirrors.
W(Heated Side Mirrors):
If equipped, press to turn the heated
mirrors on or off.
If the vehicle has trailer-tow mirrors,
only the upper glass of the mirror is
heated. The lower convex part of
the towing mirrors is not heated.
See “Rear Window Defogger” under
Climate Control Systems (with
Heater Only) on page 8-1 orClimate
Control Systems (with Air
Conditioning) on page 8-3 orDual
Automatic Climate Control System
on page 8-5.

Black plate (37,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
Instruments and Controls 5-37
Engine Cooling System
Messages
AIR CONDITIONING OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
SeeEngine Coolant Temperature
Gauge on page 5-16. To avoid
added strain on a hot engine, the air
conditioning compressor
automatically turns off. When the
coolant temperature returns to
normal, the air conditioning
compressor turns back on. You can
continue to drive your vehicle.
If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
ENGINE OVERHEATED IDLE
ENGINE
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down. See Engine
Coolant Temperature Gauge on
page 5-16.
ENGINE OVERHEATED STOP
ENGINE
This message displays and a chime
may sound if the engine cooling
system reaches unsafe
temperatures for operation. Stop
and turn off the vehicle as soon as it
is safe to do so to avoid severe
damage. This message clears when
the engine has cooled to a safe
operating temperature.
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the
engine oil needs to be changed.
When you change the engine oil, be
sure to reset the CHANGE ENGINE
OIL SOON message. See Engine
Oil Life System on page 10-13 for
information on how to reset the
message. See Engine Oil on
page 10-10 andMaintenance
Schedule on page 11-3.
ENGINE OIL LOW ADD OIL
On some vehicles, this message
displays when the engine oil level
may be too low. Check the oil level
before filling to the recommended
level. If the oil is not low and this
message remains on, take the
vehicle to your dealer for service.
See Engine Oil on page 10-10.

Black plate (1,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
Climate Controls 8-1
Climate Controls
Climate Control Systems
Climate Control Systems (withHeater Only) . . . . . . . . . . . . . . . . . 8-1
Climate Control Systems (with Air Conditioning) . . . . . . . . . . . . . 8-3
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . . . 8-5
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-8
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Climate Control Systems
Climate Control Systems (with Heater Only)
With this system, the heating and ventilation can be controlled.
1. Fan Control
2. Air Recirculation
3. Air Delivery Mode Control 4. Defrost
5. TEMP (Temperature Control)

Black plate (3,1)GMC Sierra Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853626) - 2014 - 3rd crc - 6/6/14
Climate Controls 8-3
Climate Control Systems (with Air Conditioning)
With this system the heating, cooling, and ventilation can be controlled.
1. Fan Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Control
4. Defrost5. TEMP (Temperature Control)
6. Air Recirculation
7. Rear Window DefoggerTEMP (Temperature Control):
Turn clockwise or counterclockwise
to increase or decrease the
temperature inside the vehicle.
9(Fan Control):
Turn clockwise
or counterclockwise to increase or
decrease the fan speed. Turn the
knob all the way counterclockwise
to turn the fan off.
Air Delivery Mode Control: Press
Y,\,[, or-to change the
direction of the airflow. An indicator
light comes on in the selected mode
button.
Y(Vent): Air is directed to the
instrument panel outlets.
\(Bi-Level): Air is divided
between the instrument panel and
floor outlets.
[(Floor): Air is directed to the
floor outlets, with some air directed
to the windshield and side window
outlets.