lock GMC SIERRA DENALI 2018 Repair Manual

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
178 Lighting There is a sensor near the top
center of the windshield that
automatically controls the system.
Keep this area of the windshield
clear of debris to allow for best
system performance.
The high-beam headlamps remain
on, under the automatic control,
until one of the following situations
occurs:
.
The system detects an
approaching vehicle's
headlamps.
.
The system detects a preceding
vehicle's taillamps.
.
The outside light is bright
enough that high-beam
headlamps are not required.
.
The vehicle's speed drops below
20 km/h (12 mph). .
The IntelliBeam system can be
disabled by the high/low-beam
changer or the flash-to-pass
feature. If this happens, the high/
low-beam changer must be
activated on then off within
two seconds to reactivate the
IntelliBeam system. The
instrument cluster light will come
on to indicate the IntelliBeam is
reactivated. See Headlamp
High/Low-Beam Changer 0 179
and Flash-to-Pass 0 179 .
The high beams may not turn off
automatically if the system cannot
detect another vehicle's lamps
because of any of the following:
.
The other vehicle's lamps are
missing, damaged, obstructed
from view, or otherwise
undetected.
.
The other vehicle's lamps are
covered with dirt, snow, and/or
road spray. .
The other vehicle's lamps cannot
be detected due to dense
exhaust, smoke, fog, snow, road
spray, mist, or other airborne
obstructions.
.
The vehicle's windshield is dirty,
cracked, or obstructed by
something that blocks the view
of the light sensor.
.
The vehicle is loaded such that
the front end points upward,
causing the light sensor to aim
high and not detect headlamps
and taillamps.
.
Driving on winding or hilly roads.
The automatic high-beam
headlamps may need to be disabled
if any of the above conditions exist.
Exterior Lamps Off
Reminder A reminder chime sounds when the
headlamps or parking lamps are
manually turned on, the ignition is
off, and a door is open. To disable
the chime, turn the lamps off.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 187The infotainment system has built-in
features intended to help avoid
distraction by disabling some
functions when driving. These
functions may gray out when they
are unavailable. Many infotainment
features are also available through
the instrument cluster and steering
wheel controls.
Before driving:
.
Become familiar with the
operation, center stack controls,
and infotainment display
controls. .
Set up the audio by presetting
favorite stations, setting the
tone, and adjusting the
speakers.
.
Set up phone numbers in
advance so they can be called
easily by pressing a single
control or by using a single voice
command if equipped with
Bluetooth phone capability.
See Defensive Driving 0 236 .
To play the infotainment system with
the ignition off, see Retained
Accessory Power (RAP) 0 260 .Theft-Deterrent Feature TheftLock is designed to discourage
theft of the vehicle's radio by
learning a portion of the Vehicle
Identification Number (VIN). The
radio does not operate if it is stolen
or moved to a different vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 203Rotating a Picture
Touch
w from the picture screen.
Enlarging a Picture
Touch
x from the picture screen.
Using the USB Picture Menu
1. Touch MENU from the picture
screen.
2. Touch the appropriate menu:
.
Slide Show Time: Allows
selection of the slide show
interval.
.
Clock, Temp. Display:
Allows selection of On or
Off to show the clock and
temperature on the full
screen.
.
Display Settings: Adjusts
for Brightness and Contrast.
3. Touch
0 to exit.
Auxiliary Jack This vehicle may have an AUX jack
in the center console or armrest.
See Center Console Storage 0 125 . Possible auxiliary audio sources
include:
.
Laptop computer
.
Audio music player
This jack is not an audio output. Do
not plug headphones into the
auxiliary input jack. Auxiliary
devices should be set up while the
vehicle is in P (Park).
Connect a 3.5 mm (1/8 in) cable
from the auxiliary device to the
auxiliary input jack.
If an auxiliary device has already
been connected, but a different
source is currently active, press the
MEDIA faceplate button repeatedly
to scroll through all of the available
audio source screens, until the AUX
source screen is shown.
Base Radio
Playing from the AUX Jack
An auxiliary device is played
through the audio system and
controlled through the device itself. AUX Menu
Press the MENU knob to display the
AUX menu and the following may
display:
Tone Settings : Select to adjust
Bass, Midrange, Treble, Balance,
Fade, and EQ (Equalizer). See
“ Tone Settings ” in AM-FM Radio
0 190 .
Auto Volume : If equipped, see
“ Playing an Audio CD. ”
DSP : If equipped, this feature
adjusts the pre-defined settings.
See “ DSP ” in AM-FM Radio 0 190 .
EQ (Equalizer) : If equipped, this
feature adjusts the pre-defined
equalizer settings. See “ EQ
(Equalizer) ” in AM-FM Radio 0 190 .
Base Radio with Touchscreen
Play will begin when the system has
finished reading the information on
the device.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Infotainment System 219Explicit Language Notice: Channels
with frequent explicit language are
indicated with an “ XL ” preceding the
channel name. Channel blocking is
available for SiriusXM Satellite
Radio receivers by notifying
SiriusXM:
.
USA Customers — See
www.siriusxm.com or call
1-888-601-6296.
.
Canadian Customers — See
www.siriusxm.ca or call
1-877-438-9677.
It is prohibited to copy, decompile,
disassemble, reverse engineer,
hack, manipulate, or otherwise
make available any technology or
software incorporated in receivers
compatible with the SiriusXM
Satellite Radio System or that
support the SiriusXM website, the
Online Service or any of its content.
Furthermore, the AMBER voice
compression software included in
this product is protected by
intellectual property rights including
patent rights, copyrights, and trade
secrets of Digital Voice
Systems, Inc. General Requirements:
1. A License Agreement from
SiriusXM is required for any
product that incorporates
SiriusXM Technology and/or for
use of any of the SiriusXM
marks to be manufactured,
distributed, or marketed in the
SiriusXM Service Area.
2. For products to be distributed,
marketed, and/or sold in
Canada, a separate agreement
is required with Canadian
Satellite Radio Inc. (operating
as SiriusXM Canada).
Other Information The Bluetooth word mark and logos
are owned by the Bluetooth SIG,
Inc. and any use of such marks by
General Motors is under license.
Other trademarks and trade names
are those of their respective owners. Schedule I: Gracenote EULA
Music recognition technology and
related data are provided by
Gracenote. Gracenote is the
industry standard in music
recognition technology and related
content delivery. For more
information visit
www.gracenote.com.
Music-related data from Gracenote,
Inc., copyright 2000 to present
Gracenote. Gracenote Software,
copyright 2000 to present
Gracenote. One or more patents
owned by Gracenote may apply to
this product and service. See the
Gracenote website for a
non-exhaustive list of applicable
Gracenote patents. Gracenote,
CDDB, MusicID, MediaVOCS, the
Gracenote logo and logotype, and
the "Powered by Gracenote" logo

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
224 Climate Controls
Climate Controls Climate Control Systems Climate Control Systems (with
Heater Only) . . . . . . . . . . . . . . . . 224
Climate Control Systems (with
Air Conditioning) . . . . . . . . . . . . 226
Dual Automatic Climate
Control System . . . . . . . . . . . . . 228
Air Vents Air Vents . . . . . . . . . . . . . . . . . . . . . 231
Maintenance Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . 232
Service . . . . . . . . . . . . . . . . . . . . . . . 233 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 Controls
4. Defrost
5. TEMP (Temperature Control) TEMP : Turn clockwise or
counterclockwise to increase or
decrease the temperature inside the
vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Climate Controls 225
9 : 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 Controls :
Press
Y ,
\ ,
[ , or
- to change
the direction of the airflow. An
indicator light comes on in the
selected mode button.
Y : Air is directed to the instrument
panel outlets.
\ : Air is divided between the
instrument panel and floor outlets. [ : Air is directed to the floor
outlets, with some air directed to the
windshield, side window, and
second row floor outlets.
- : This mode clears the windows
of fog or moisture. Air is directed to
the windshield, floor outlets, and
side window vents.
0 : Press to clear the windshield
of fog or frost more quickly. Air is
directed to the windshield and the
side window vents. The system
automatically forces outside air into
the vehicle. Do not drive the vehicle until all the
windows are clear.
See Air Vents 0 231 .
@ : Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the
inside of the vehicle. It can also be
used to help reduce outside air and
odors that enter the vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
226 Climate Controls
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 Controls
4. Defrost
5. TEMP (Temperature Control) 6.
K (Rear Window Defogger, If
Equipped)
f (Outside Heated Mirror, If
Equipped)
8 (Outside Air, If Equipped)
7.
@ Air Recirculation TEMP : Turn clockwise or
counterclockwise to increase or
decrease the temperature inside the
vehicle.
9 : 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 Controls :
Press
Y ,
\ ,
[ , or
- to change
the direction of the airflow. An
indicator light comes on in the
selected mode button.
Y : Air is directed to the instrument
panel outlets.
\ : Air is divided between the
instrument panel and floor outlets.
[ : Air is directed to the floor
outlets, with some air directed to the
windshield and side window outlets.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Climate Controls 229The recirculation light will not come
on when automatically controlled.
Press
@ to manually select
recirculation; press it again to select
outside air.
Do not cover the solar sensor on the
top of the instrument panel near the
windshield. This sensor regulates
air temperature based on sun load.
See “ Sensors ” later in this section.
Manual Operation
O : Press to turn the climate control
system on or off. Outside air still
enters the vehicle, and is directed to
the floor. This direction can be
changed by pressing the air
delivery mode.
9 : Turn clockwise or
counterclockwise to increase or
decrease the fan speed. Press the
knob to turn the fan off.
Press AUTO to return to automatic
operation. Driver and Passenger
Temperature Control : The
temperature can be adjusted
separately for the driver and
passenger.
Turn the knob clockwise or
counterclockwise to increase or
decrease the driver or passenger
temperature setting.
SYNC : Press to link the passenger
temperature setting to the driver
setting. The SYNC indicator light will
turn on. When the passenger setting
is adjusted, the SYNC indicator light
is off.
The driver side or passenger side
temperature display shows the
temperature setting increasing or
decreasing.
Air Delivery Mode Control :
Press
Y ,
\ ,
[ , or
- to change
the direction of the airflow. An
indicator light comes on in the
selected mode button. Changing the mode cancels the
automatic operation and the system
goes into manual mode. Press
AUTO to return to automatic
operation.
Y : Air is directed to the instrument
panel outlets.
\ : Air is divided between the
instrument panel and floor outlets.
Some air is directed toward the
windshield and side window outlets.
[ : Air is directed to the floor
outlets, with some to the windshield,
side window outlets, and second
row floor outlets.
- : This mode clears the windows
of fog or moisture. Air is directed to
the windshield, floor outlets, and
side window vents. The system
automatically forces outside air into
the vehicle and the air conditioning
compressor will run, unless the
outside temperature is close to
freezing.
0 : Press to clear the windshield
of fog or frost more quickly. Air is
directed to the windshield and the
side window vents. The air

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
230 Climate Controls conditioning compressor also comes
on, unless the outside temperature
is below freezing.
Do not drive the vehicle until all
windows are clear.
See Air Vents 0 231 .
A/C : Press to turn the air
conditioning system on or off. An
indicator light comes on to show
that the air conditioning is enabled.
If the fan is turned off, the air
conditioner will not run. The A/C
light will stay on even if the outside
temperatures are below freezing.
@ : Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the
inside of the vehicle. It can also be
used to help reduce outside air and
odors that enter the vehicle. The air
conditioning compressor also comes
on when this mode is activated.
Rear Window Defogger
The rear window defogger uses a
warming grid to remove fog from the
rear window. K : 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 defogger turns off if the
ignition is turned to ACC/
ACCESSORY or LOCK/OFF.
CautionUsing a razor blade or sharp
object to clear the inside rear
window can damage the rear
window defogger. Repairs would
not be covered by the vehicle
warranty. Do not clear the inside
rear window with sharp objects.
Heated Mirror : If equipped with
heated outside rearview mirrors,
press
K to heat the mirrors. See
Heated Mirrors 0 50 . 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.
There is also an exterior
temperature sensor 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
including a snow plow, could cause
a false reading in the displayed
temperature.
Some vehicles may have the
exterior temperature sensor in the
passenger side mirror instead of the
front grille area.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Climate Controls 231The 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 sliding knobs on the center
and side air vents to direct the
airflow. Use the thumbwheels near
the air vents to open or close off the
airflow.
Air vents blow warm air on the side
windows in cold weather. If Floor,
Defog, or Defrost modes are
selected, a small amount of air will
come from the vents close to the
window. If the airflow is shut off
using the thumbwheels, warm air
will be directed to the other
instrument panel vents. This is
normal operation.
Use the thumbwheels to turn vent
airflow on or off based on the mode
selected. 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.
.
Clear snow off the hood to
improve visibility and help
decrease moisture drawn 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.