2015 GMC SIERRA 1500 AUX

Black plate (4,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
1-4 In Brief
21.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).
22.
gTraction Control/Electronic
Stability Control on page 9-50.
0Pedal Adjust Switch (If
Equipped). See Adjustable
Throttle and Brake Pedal on
page 9-24.
{Cargo Lamp on page 6-6.
XParking Assist Button (If
Equipped). See Assistance
Systems for Parking or Backing
on page 9-56.
@Lane Departure Warning
(LDW) on page 9-62 (If
Equipped).
5Hill Descent Control Switch
(If Equipped). See Hill Descent
Control (HDC) on page 9-52.
qExhaust Brake (If
Equipped). See “Exhaust
Brake” in the Duramax diesel
supplement.
gPower Take Off (PTO)
Button (If Equipped). See the
Duramax diesel supplement.
Auxiliary Button (If Equipped).
See Add-On Electrical
Equipment on page 9-97.
23. USB Port on page 7-18.
24. Power Outlets on page 5-6 (If
Equipped).
25. Power Outlet 110V Alternating Current (If Equipped). See
Power Outlets on page 5-6.
26. 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 (21,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
In Brief 1-21
Automatic Transfer Case
This transfer case knob is to the left
of the steering column.
The different drive options that may
be available are described following.
2
m(Two-Wheel Drive High):This
setting is used for driving in most
street and highway situations.
AUTO (Automatic Four-Wheel
Drive): This setting is ideal for use
when road surface traction
conditions are variable. Do not use AUTO mode to park on
a steep grade with poor traction
such as ice, snow, mud or gravel. In
AUTO mode only the rear wheels
will hold the vehicle from sliding
when parked. If parking on a steep
grade, use 4
mto keep all four
wheels engaged.
4
m(Four-Wheel Drive High): Use
this setting when extra traction is
needed, such as on snowy or icy
roads or in most off-road situations.
N (Neutral): Shift to this setting
only when towing the vehicle. See
Recreational Vehicle Towing on
page 10-93 orTrailer Towing on
page 9-72.
4
n(Four-Wheel Drive Low): This
setting sends maximum power to all
four wheels. Choose Four-Wheel
Drive Low when driving in deep
sand, mud, or snow, and while
climbing or descending steep hills.
See Four-Wheel Drive on
page 9-38.
Vehicle Features
Infotainment System
The base radio and base radio with
connectivity information is included
in this manual. See the infotainment
manual for information on the
uplevel radios, audio players,
phone, navigation system, Rear
Seat Entertainment (RSE), and
voice or speech recognition,
if equipped.
Radio(s)
O
: Press to turn the system on.
Press and hold to turn it off. When
on, press to mute; press again to
unmute. Turn to increase or
decrease the volume.
RADIO: Press to choose between
FM, AM, and SiriusXM
®,
if equipped.
MEDIA: Press to change the audio
source between CD, USB, SD card,
AUX, and Bluetooth
®Audio,
if equipped.

Black plate (22,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
1-22 In Brief
{:Press to go to the Home Page.
MENU: Press to select a menu.
g:Press to seek the previous
station or track.
l: Press to seek the next station
or track.
See Overview on page 7-2 about
these and other radio features.
Storing Radio Station Presets
Up to 25 preset stations from all
bands can be stored in the favorite
lists in any order. Up to five stations
can be stored in each favorite page
and the number of favorite pages
can be set.
To store the station to a position in
the list, while on the active source
main page, such as AM, FM,
or SiriusXM (if equipped), press and
hold a favorites/soft key button on
the faceplate.
See “Storing Radio Station Presets”
under AM-FM Radio on page 7-8.
Setting the Clock
SeeClock on page 5-5.
Satellite Radio
Vehicles with a SiriusXM®satellite
radio tuner and a valid SiriusXM
satellite radio subscription can
receive SiriusXM programming.
SiriusXM Satellite Radio
Service
SiriusXM is a satellite radio service
based in the 48 contiguous United
States and 10 Canadian provinces.
SiriusXM satellite radio has a wide
variety of programming and
commercial-free music, coast to
coast, and in digital-quality sound.
A fee is required to receive the
SiriusXM service.
For more information refer to:
.www.siriusxm.com or call
1-866-635-2349 (U.S.).
.www.xmradio.ca or call
1-877-209-0079 (Canada). See
Satellite Radio on page 7-10.
Portable Audio Devices
This vehicle may have a 3.5 mm
(1/8 in) auxiliary input jack, SD card
reader, and USB ports in the center
console or armrest. There may be a
USB port in the upper glove box.
External devices such as iPods
®,
laptop computers, MP3 players, CD
changers, and USB storage devices
may be connected, depending on
the audio system.
See USB Port on page 7-18, SD
Card Reader on page 7-20, and
Auxiliary Jack on page 7-21.

Black plate (3,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Storage 4-3
Sunglasses Storage
If equipped, sunglasses storage is
on the overhead console. Press the
fixed button on the cover and
release to access.
Center Console Storage
Bench Seat
If equipped, pull the front center
seat armrest down to access the
storage area with cupholders.
Press the button and lift to open.
There is a removable divider.
If equipped, there are dual USB
ports, an accessory power outlet, an
auxiliary jack, and an SD card
reader inside.
Bucket Seat
If equipped, the center console may
have the following features:
1. Tote Compartment
2. Accessory Power Outlets
3. Power Cord Openings
4. Removable Cupholders
5. Device Holder
6. USB Ports
7. High Voltage Power Outlet (HVPO) (if equipped)
8. SD Card Reader

Black plate (4,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
4-4 Storage
9. Auxiliary Input Jack
10. Latch
11. Rear Seat Audio (RSA)
Press the latch (10) and lift the
armrest to access the main storage
compartment.
There is an open storage
compartment on the rear of the
center console.
SeeCupholders on page 4-2, Power
Outlets on page 5-6, USB Port on
page 7-18, Auxiliary Jack on
page 7-21, and SD Card Reader on
page 7-20. If equipped with the
uplevel radio, see “Audio Players”in
the infotainment manual.Floor Console Storage
If equipped with front seat floor
console storage, unlock with the
ignition key, press the button, and
lift to open.
Additional Storage
Features
Cargo Tie-Downs
The vehicle may be equipped with
cargo tie-downs.
Any of the nine holes inside the
truck bed can be used for tie-downs.
The maximum load is 113 kg
(250 lb) per tie-down.

Black plate (1,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Lighting 6-1
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-2
Headlamp High/Low-Beam Changer . . . . . . . . . . . . . . . . . . . . . 6-2
Flash-to-Pass . . . . . . . . . . . . . . . . . 6-3
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 6-3
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 6-3
Hazard Warning Flashers . . . . . 6-4
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 6-4
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-5
Auxiliary Roof-Mounted Lamp . . . . . . . . . 6-5
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . 6-6
Cargo Lamp . . . . . . . . . . . . . . . . . . 6-6
Dome Lamps . . . . . . . . . . . . . . . . . 6-7
Reading Lamps . . . . . . . . . . . . . . . 6-7
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . 6-8
Exit Lighting . . . . . . . . . . . . . . . . . . . 6-8
Battery Load Management . . . . 6-8
Battery Power Protection . . . . . . 6-9
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
instrument panel to the left of the
steering wheel.
O(Off): Turns off the automatic
headlamps and Daytime Running
Lamps (DRL). Turn the headlamp
control to the off position again to
turn the automatic headlamps or
DRL back on.
For vehicles first sold in Canada, off
will only work when the vehicle is in
P (Park).

Black plate (5,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Lighting 6-5
one second will cause the turn
signals to flash until the lever is
released.
The lever returns to its starting
position whenever it is released.
If after signaling a turn or a lane
change the arrows flash rapidly or
do not come on, a signal bulb could
be burned out.
Replace any burned out bulbs. If a
bulb is not burned out, check the
fuse. SeeFuses on page 10-41.
Turn Signal On Chime
If the turn signal is left on for more
than 1.2 km (0.75 mi), a chime
sounds at each flash of the turn
signal. The message TURN
SIGNAL ON will also appear in the
Driver Information Center (DIC). To
turn the chime and message off,
move the turn signal lever to the off
position.Fog Lamps
If equipped, the control is on the
center of the exterior lamp control,
to the left of the steering column.
The ignition must be in the ON/RUN
position for the fog lamps to
come on.
#(Fog Lamps): Press to turn the
fog lamps on or off. A light will come
on in the instrument cluster.
When the fog lamps are turned on,
the parking lamps automatically
turn on. When the headlamps are changed
to high beam, the fog lamps go off.
When the high-beam headlamps are
turned off, the fog lamps will come
on again.
Some localities have laws that
require the headlamps to be on with
the fog lamps.
Auxiliary
Roof-Mounted Lamp
If equipped, this button includes
wiring provisions for a dealer or a
qualified service center to install an
auxiliary roof lamp.
This button is on the overhead
console.

Black plate (6,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
6-6 Lighting
When the wiring is connected to an
auxiliary roof-mounted lamp,
pressing the bottom of the button
will activate the lamp and illuminate
an indicator light at the bottom of
this button. Pressing the top of the
button will turn off the roof-mounted
lamp and indicator.
The emergency roof lamp circuit is
fused at 30 amps, so the total
current draw of the attached lamps
should be less than this value. The
attachment points for the roof lamp
circuits are two blunt cut wires
above the overhead console: a dark
green with blue stripe switched
power wire and a black ground wire.
For information on roof-mounted
emergency lamp installation, see
www.gmupfitter.com or contact your
dealer.
If the vehicle has this button, the
vehicle may have the snow plow
prep package. SeeAdd-On
Electrical Equipment on page 9-97.Interior Lighting
Instrument Panel
Illumination Control
This feature controls the brightness
of the steering wheel and instrument
panel lights. The instrument panel
illumination control is next to the
exterior lamp control.
D(Instrument Panel
Illumination): Move the
thumbwheel up or down to brighten
or dim the lights.
Cargo Lamp
The cargo lamp provides more light
in the cargo area of the vehicle,
if needed. The lights inside of the
pickup box also turn on, if equipped.
Press the switch down to turn the
cargo lamp on or off. An indicator
light will turn on when the lamp is
turned on, if equipped. The shift
lever must be in the P (Park)
position to operate the cargo lamp.