2015 GMC SIERRA 1500 airbag

Black plate (1,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
2015 GMC Sierra Owner ManualM
In Brief. . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information . . . . . . . . 1-4
Vehicle Features . . . . . . . . . . . . . 1-21
Performance and Maintenance . . . . . . . . . . . . . . . . 1-27
Keys, Doors, and Windows . . . . . . . . . . . . . . . . . . . . 2-1
Keys and Locks . . . . . . . . . . . . . . . 2-1
Doors . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Vehicle Security . . . . . . . . . . . . . . 2-11
Exterior Mirrors . . . . . . . . . . . . . . . 2-13
Interior Mirrors . . . . . . . . . . . . . . . . 2-17
Windows . . . . . . . . . . . . . . . . . . . . . 2-18
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Seats and Restraints . . . . . . . . . 3-1
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats . . . . . . . . . . . . . . . . . . . . 3-3
Rear Seats . . . . . . . . . . . . . . . . . . . 3-10
Safety Belts . . . . . . . . . . . . . . . . . . 3-12
Airbag System . . . . . . . . . . . . . . . . 3-21
Child Restraints . . . . . . . . . . . . . . 3-37 Storage
. . . . . . . . . . . . . . . . . . . . . . . 4-1
Storage Compartments . . . . . . . . 4-1
Additional Storage Features . . . 4-4
Instruments and Controls . . . . 5-1
Controls . . . . . . . . . . . . . . . . . . . . . . . 5-2
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . 5-9
Information Displays . . . . . . . . . . 5-30
Vehicle Messages . . . . . . . . . . . . 5-35
Vehicle Personalization . . . . . . . 5-45
Universal Remote System . . . . 5-52
Lighting . . . . . . . . . . . . . . . . . . . . . . . 6-1
Exterior Lighting . . . . . . . . . . . . . . . 6-1
Interior Lighting . . . . . . . . . . . . . . . . 6-6
Lighting Features . . . . . . . . . . . . . . 6-8
Infotainment System . . . . . . . . . 7-1
Introduction . . . . . . . . . . . . . . . . . . . . 7-1
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Audio Players . . . . . . . . . . . . . . . . 7-15
Voice Recognition . . . . . . . . . . . . 7-22
Phone . . . . . . . . . . . . . . . . . . . . . . . . 7-29
Trademarks and License Agreements . . . . . . . . . . . . . . . . . 7-46 Climate Controls
. . . . . . . . . . . . . 8-1
Climate Control Systems . . . . . . 8-1
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-8
Maintenance . . . . . . . . . . . . . . . . . . . 8-9
Driving and Operating . . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-23
Engine Exhaust . . . . . . . . . . . . . . 9-32
Automatic Transmission . . . . . . 9-33
Drive Systems . . . . . . . . . . . . . . . . 9-38
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-47
Ride Control Systems . . . . . . . . 9-50
Cruise Control . . . . . . . . . . . . . . . . 9-53
Driver Assistance Systems . . . 9-56
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-64
Trailer Towing . . . . . . . . . . . . . . . . 9-69
Conversions and Add-Ons . . . 9-97
Vehicle Care . . . . . . . . . . . . . . . . . 10-1
General Information . . . . . . . . . . 10-2
Vehicle Checks . . . . . . . . . . . . . . . 10-3
Headlamp Aiming . . . . . . . . . . . 10-37
Bulb Replacement . . . . . . . . . . 10-37
Electrical System . . . . . . . . . . . . 10-41
Wheels and Tires . . . . . . . . . . . 10-50

Black plate (4,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
iv Introduction
Danger, Warnings, and
Cautions
{Danger
Text marked{Danger provides
information on risk of fatal injury.
Disregarding this information may
endanger life.
{Warning
Text marked{Warning provides
information on risk of accident or
injury. Disregarding this
information may lead to injury.
{Caution
Text marked{Caution provides
information that may indicate a
hazard that could result in injury
or death. It could also result in
possible damage to the vehicle.
A circle with a slash through it is a
safety symbol which means “Do
Not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: This symbol is shown when
you need to see your owner manual
for additional instructions or
information.
*: This symbol is shown when
you need to see a service manual
for additional instructions or
information.
Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the Index.
0: Adjustable Pedals
9:Airbag Readiness Light
!:Antilock Brake System (ABS)

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 (11,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
In Brief 1-11
Safety Belts
Refer to the following sections for
important information on how to use
safety belts properly.
.Safety Belts on page 3-12.
.How to Wear Safety Belts
Properly on page 3-13.
.Lap-Shoulder Belt on page 3-14.
.Lower Anchors and Tethers for
Children (LATCH System) on
page 3-45.
Passenger Sensing
System
The passenger sensing system,
if equipped, turns off the front
outboard passenger frontal airbag
under certain conditions. No other
airbag is affected by the passenger
sensing system.
If the vehicle has one of the
indicators pictured in the following
illustrations, then the vehicle has a
passenger sensing system for the
front outboard passenger position
unless there is an airbag off switch
on the instrument panel endcap.
If there is an airbag off switch, the
vehicle does not have a passenger
sensing system. SeeAirbag On-Off
Switch on page 3-28 for more
information.
The passenger airbag status
indicator will be visible on the
overhead console when the vehicle
is started.
United States
Canada and Mexico
See Passenger Sensing System on
page 3-30 for important information.
Mirror Adjustment
Using hood-mounted air deflectors
and add-on convex mirror
attachments could decrease mirror
performance.

Black plate (1,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Seats and Restraints 3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Seat Adjustment . . . . . . . . . . . . . . 3-3
Center Seat . . . . . . . . . . . . . . . . . . . 3-3
Power Seat Adjustment . . . . . . . 3-4
Lumbar Adjustment . . . . . . . . . . . 3-4
Reclining Seatbacks . . . . . . . . . . 3-5
Memory Seats . . . . . . . . . . . . . . . . 3-6
Heated and Cooled FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Rear Seats
Rear Seats (Double Cab FullBench) . . . . . . . . . . . . . . . . . . . . . 3-10
Rear Seats (Split Bench) . . . . . 3-11
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-12
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . 3-13 Lap-Shoulder Belt . . . . . . . . . . . 3-14
Safety Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . 3-19
Lap Belt . . . . . . . . . . . . . . . . . . . . . 3-19
Safety Belt Extender . . . . . . . . . 3-20
Safety System Check . . . . . . . . 3-20
Safety Belt Care . . . . . . . . . . . . . 3-20
Replacing Safety Belt System Parts after a Crash . . . . . . . . . 3-21
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-21
Where Are the Airbags? . . . . . 3-23
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-25
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . 3-26
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . 3-27
What Will You See after an Airbag Inflates? . . . . . . . . . . . . 3-27
Airbag On-Off Switch . . . . . . . . 3-28
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 3-30
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . 3-35 Adding Equipment to the
Airbag-Equipped Vehicle . . . 3-35
Airbag System Check . . . . . . . . 3-36
Replacing Airbag System Parts after a Crash . . . . . . . . . 3-36
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-37
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . 3-39
Child Restraint Systems . . . . . 3-42
Where to Put the Restraint . . . 3-43
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . 3-45
Replacing LATCH System Parts After a Crash . . . . . . . . . 3-57
Securing Child Restraints (Center Front Seat) . . . . . . . . . 3-58
Securing Child Restraints (Front Passenger Seat) . . . . 3-58
Securing Child Restraints (Rear Seat) . . . . . . . . . . . . . . . . . 3-67

Black plate (13,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Seats and Restraints 3-13
safety belts. That is why wearing
safety belts makes such good
sense.
Questions and Answers About
Safety Belts
Q: Will I be trapped in the vehicleafter a crash if I am wearing a
safety belt?
A: You could be—whether you are
wearing a safety belt or not.
Your chance of being conscious
during and after a crash, so you
can unbuckle and get out, is
much greater if you are belted.
Q: If my vehicle has airbags, why should I have to wear safety
belts?
A: Airbags are supplemental
systems only; so they work with
safety belts —not instead of
them. Whether or not an airbag
is provided, all occupants still
have to buckle up to get the
most protection. Also, in nearly all states and in
all Canadian provinces, the law
requires wearing safety belts.
How to Wear Safety Belts
Properly
This section is only for people of
adult size.
There are special things to know
about safety belts and children. And
there are different rules for smaller
children and infants. If a child will be
riding in the vehicle, see
Older
Children on page 3-37 orInfants
and Young Children on page 3-39.
Follow those rules for everyone's
protection.
It is very important for all occupants
to buckle up. Statistics show that
unbelted people are hurt more often
in crashes than those who are
wearing safety belts.
There are important things to know
about wearing a safety belt properly.
.Sit up straight and always keep
your feet on the floor in front
of you.
.Always use the correct buckle
for your seating position.
.Wear the lap part of the belt low
and snug on the hips, just
touching the thighs. In a crash,
this applies force to the strong
pelvic bones and you would be
less likely to slide under the lap
belt. If you slid under it, the belt
would apply force on your
abdomen. This could cause
serious or even fatal injuries.

Black plate (16,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
3-16 Seats and Restraints
To unlatch the belt, push the button
on the buckle. The belt should
return to its stowed position.
Before a door is closed, be sure the
safety belt is out of the way. If a
door is slammed against a safety
belt, damage can occur to both the
safety belt and the vehicle.
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
front outboard passenger.Adjust the height so the shoulder
portion of the belt is on the shoulder
and not falling off of it. The belt
should be close to, but not
contacting, the neck. Improper
shoulder belt height adjustment
could reduce the effectiveness of
the safety belt in a crash. See
How
to Wear Safety Belts Properly on
page 3-13.Push down on the release button to
move the height adjuster to the
desired position.
Move the adjuster up by pushing up
on the shoulder belt guide. After the adjuster is set to the
desired position, try to move it down
without pushing the release button
to make sure it has locked into
position.
Safety Belt Pretensioners
This vehicle has safety belt
pretensioners for front outboard
occupants. Although the safety belt
pretensioners cannot be seen, they
are part of the safety belt assembly.
They can help tighten the safety
belts during the early stages of a
moderate to severe frontal, near
frontal, or rear crash if the threshold
conditions for pretensioner
activation are met. And, if your
vehicle has side impact airbags,
safety belt pretensioners can help
tighten the safety belts in a side
crash. If the vehicle has rollover
roof-rail airbags, safety belt
pretensioners can help tighten the
safety belts in a rollover event.
Pretensioners work only once. If the
pretensioners activate in a crash,
they will need to be replaced, and

Black plate (21,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Seats and Restraints 3-21
Replacing Safety Belt
System Parts after a
Crash
{Warning
A crash can damage the safety
belt system in the vehicle.
A damaged safety belt system
may not properly protect the
person using it, resulting in
serious injury or even death in a
crash. To help make sure the
safety belt systems are working
properly after a crash, have them
inspected and any necessary
replacements made as soon as
possible.
After a minor crash, replacement of
safety belts may not be necessary.
But the safety belt assemblies that
were used during any crash may
have been stressed or damaged. See your dealer to have the safety
belt assemblies inspected or
replaced.
New parts and repairs may be
necessary even if the safety belt
system was not being used at the
time of the crash.
Have the safety belt pretensioners
checked if the vehicle has been in a
crash, or if the airbag readiness light
stays on after you start the vehicle
or while you are driving. See
Airbag
Readiness Light on page 5-18.
Airbag System
The vehicle has the following
airbags:
.A frontal airbag for the driver.
.A frontal airbag for the front
outboard passenger.
The vehicle may have the following
airbags:
.A seat-mounted side impact
airbag for the driver.
.A seat-mounted side impact
airbag for the front outboard
passenger.
.A roof-rail airbag for the driver
and the passenger seated
directly behind the driver.
.A roof-rail airbag for the front
outboard passenger and the
person seated directly behind
the front outboard passenger.
All of the airbags in the vehicle will
have the word AIRBAG on the trim
or on a label near the deployment
opening.