transmission GMC SIERRA 2015 Manual PDF

Black plate (11,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
Customer Information 13-11
Managing the Vehicle Damage
Repair Process
In the event that the vehicle requires
damage repairs, GM recommends
that you take an active role in its
repair. If you have a pre-determined
repair facility of choice, take the
vehicle there, or have it towed there.
Specify to the facility that any
required replacement collision parts
be original equipment parts, either
new Genuine GM parts or recycled
original GM parts. Remember,
recycled parts will not be covered by
the GM vehicle warranty.
Insurance pays the bill for the repair,
but you must live with the repair.
Depending on your policy limits,
your insurance company may
initially value the repair using
aftermarket parts. Discuss this with
the repair professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you may be
obligated to have the vehicle
repaired with Genuine GM parts,
even if your insurance coverage
does not pay the full cost.If another party's insurance
company is paying for the repairs,
you are not obligated to accept a
repair valuation based on that
insurance company's collision policy
repair limits, as you have no
contractual limits with that company.
In such cases, you can have control
of the repair and parts choices as
long as the cost stays within
reasonable limits.
Service Publications
Ordering Information
Service Manuals
Service Manuals have the diagnosis
and repair information on the
engines, transmission, axle,
suspension, brakes, electrical,
steering, body, etc.
Service Bulletins
Service Bulletins give additional
technical service information
needed to knowledgeably service
General Motors cars and trucks.
Each bulletin contains instructions
to assist in the diagnosis and
service of the vehicle.
Owner Information
Owner publications are written
specifically for owners and intended
to provide basic operational
information about the vehicle. The
Owner Manual includes the
Maintenance Schedule for all
models.
In-Portfolio: Includes a Portfolio,
Owner Manual, and Warranty
Manual.
RETAIL SELL PRICE: $35.00
–
$40.00 (U.S.) plus handling and
shipping fees.
Without Pouch: Owner Manual only.
RETAIL SELL PRICE:
$25.00 (U.S.) plus handling and
shipping fees.

Black plate (14,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
13-14 Customer Information
In Canada, call 1-800-263-3777
(English) or 1-800-263-7854
(French), or write:
General Motors of Canada Limited
Customer Care Centre, Mail Code:
CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7Vehicle Data
Recording and
Privacy
The vehicle has a number of
computers that record information
about the vehicle’s performance and
how it is driven. For example, the
vehicle uses computer modules to
monitor and control engine and
transmission performance, to
monitor the conditions for airbag
deployment and deploy them in a
crash, and, if equipped, to provide
antilock braking to help the driver
control the vehicle. These modules
may store data to help the dealer
technician service the vehicle.
Some modules may also store data
about how the vehicle is operated,
such as rate of fuel consumption or
average speed. These modules may
retain personal preferences, such as
radio presets, seat positions, and
temperature settings.
Event Data Recorders
This vehicle is equipped with an
event data recorder (EDR). The
main purpose of an EDR is to
record, in certain crash or near
crash-like situations, such as an air
bag deployment or hitting a road
obstacle, data that will assist in
understanding how a vehicle’s
systems performed. The EDR is
designed to record data related to
vehicle dynamics and safety
systems for a short period of time,
typically 30 seconds or less. The
EDR in this vehicle is designed to
record such data as:
.How various systems in your
vehicle were operating;
.Whether or not the driver and
passenger safety belts were
buckled/fastened;
.How far (if at all) the driver was
depressing the accelerator and/
or brake pedal; and,
.How fast the vehicle was
traveling.

Black plate (6,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
14-6 OnStar
Vehicle Diagnostics
OnStar Vehicle Diagnostics can
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
other major vehicle systems. It also
checks the tire pressures, if the
vehicle is equipped with the Tire
Pressure Monitoring System. If an
On-Demand Diagnostics check is
needed, press
Q, and an Advisor
can run a check.
OnStar Additional
Information
Transferring Service
PressQto request account transfer
eligibility information. The Advisor
can assist in canceling or removing
account information.
Selling/Transferring the
Vehicle
Call 1-888-4-ONSTAR immediately
to terminate your OnStar services if
the vehicle is disposed of, sold,
transferred, or if the lease ends.
Reactivation for Subsequent
Owners
PressQand follow the prompts to
speak to an Advisor as soon as
possible. The Advisor will update
vehicle records and explain the
OnStar service options available.
How OnStar Service Works
Automatic Crash Response,
Emergency Services, Crisis Assist,
Stolen Vehicle Assistance, Vehicle
Diagnostics, Remote Door Unlock,
Roadside Assistance, Turn-by-Turn
Navigation, and Hands-Free Calling
are available on most vehicles. Not
all OnStar services are available
everywhere or on all vehicles. For
more information, a full description
of OnStar services, system
limitations, and OnStar terms and
conditions:
.Call 1-888-4-ONSTAR
(1-888-466-7827).
.See www.onstar.com (U.S.).
.See www.onstar.ca (Canada).
.Call TTY 1-877-248-2080.
.PressQto speak with an
Advisor.
OnStar services cannot work unless
the vehicle is in a place where
OnStar has an agreement with a
wireless service provider for service

Black plate (9,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
OnStar 14-9
may unlawfully intercept or access
transmissions and private
communications without consent.
OnStar - software
acknowledgements
Certain OnStar components include
libcurl and unzip software and other
third party software. Below are the
notices and licenses associated
with libcurl and unzip and for other
third party software please see
http://www.lg.com/global/support/
opensource/index and
https://www.onstar.com/web/portal/
getdocuments
libcurl:
COPYRIGHT AND PERMISSION
NOTICE
Copyright (c) 1996 - 2010, Daniel
Stenberg, .
All rights reserved.
Permission to use, copy, modify,
and distribute this software for any
purpose with or without fee is
hereby granted, provided that theabove copyright notice and this
permission notice appear in all
copies.
THE SOFTWARE IS PROVIDED
“AS IS,”
WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE
AND NONINFRINGEMENT OF
THIRD PARTY RIGHTS. IN NO
EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF
CONTRACT, TORT OR
OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE
USE OR OTHER DEALINGS IN
THE SOFTWARE.
Except as contained in this notice,
the name of a copyright holder shall
not be used in advertising or
otherwise to promote the sale, use or other dealings in this Software
without prior written authorization of
the copyright holder.
unzip:
This is version 2005-Feb-10 of the
Info-ZIP copyright and license. The
definitive version of this document
should be available at
ftp://ftp.info-zip.org/pub/infozip/
license.html indefinitely.
Copyright (c) 1990-2005 Info-ZIP. All
rights reserved.
For the purposes of this copyright
and license,
“Info-ZIP”is defined as
the following set of individuals:
Mark Adler, John Bush, Karl Davis,
Harald Denker, Jean-Michel Dubois,
Jean-loup Gailly, Hunter Goatley, Ed
Gordon, Ian Gorman, Chris
Herborth, Dirk Haase, Greg Hartwig,
Robert Heath, Jonathan Hudson,
Paul Kienitz, David Kirschbaum,
Johnny Lee, Onno van der Linden,
Igor Mandrichenko, Steve P. Miller,
Sergio Monesi, Keith Owens,
George Petrov, Greg Roelofs, Kai

Black plate (1,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-29
Active Fuel Management
®. . . . . 9-32
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-88
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . 9-88
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-6
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . 11-9
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . 9-23
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 3-3
Air Cleaner/Filter, Engine . . . . . 10-15
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 8-5
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-4 Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-29
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-22
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-24
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-22
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . 3-22
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-20
Where Are the Airbags? . . . . . . 3-18
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-28
Passenger Status Indicator . . . 5-17
Readiness Light . . . . . . . . . . . . . . 5-16
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 3-28
System Check . . . . . . . . . . . . . . . . 3-17
Alarm Vehicle Security . . . . . . . . . . . . . . 2-11
All-Season Tires . . . . . . . . . . . . . . 10-51
All-Terrain Tires . . . . . . . . . . . . . . . 10-52 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 9-46
Warning Light . . . . . . . . . . . . . . . . . 5-21
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-96
Interior . . . . . . . . . . . . . . . . . . . . . 10-101
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 13-5
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . 9-59
Assistance Systems for
Parking and Backing . . . . . . . . . 9-56
Automatic Dimming Mirrors . . . . . . . . . . . . . . 2-17
Door Locks . . . . . . . . . . . . . . . . . . . . 2-9
Headlamp System . . . . . . . . . . . . . 6-3
Transmission . . . . . . . . . . . . . . . . . 9-33
Transmission Fluid . . 10-12, 10-15
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 9-36
Shift Lock ControlFunction Check . . . . . . . . . . . 10-34
Auxiliary Roof Mounted Lamp . . . . . . . . . . . 6-5
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-30
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-31

Black plate (2,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-29Jump Starting . . . . . . . . . . . . . . . 10-87
Load Management . . . . . . . . . . . . . 6-8
Power Protection . . . . . . . . . . . . . . 6-9
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-31
Blade Replacement, Wiper . . . 10-35
Blind Spot Mirrors . . . . . . . . . . . . . 2-17
Brake Pedal and Adjustable
Throttle . . . . . . . . . . . . . . . . . . . . . . 9-23
System Warning Light . . . . . . . . 5-21
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-26 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-46
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-48
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-47
System Messages . . . . . . . . . . . . 5-32
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Break-In, New Vehicle . . . . . . . . . 9-23 Bulb Replacement . . . . . . . . . . . . 10-40
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . 10-39
Halogen Bulbs . . . . . . . . . . . . . . 10-36
Headlamp Aiming . . . . . . . . . . . 10-36
Headlamps . . . . . . . . . . . . . . . . . 10-36
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-36
Taillamps, Turn Signal,
Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-37
Buying New Tires . . . . . . . . . . . . . 10-69
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-4
California Fuel Requirements . . . . . . . . . . . 9-64
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-2
Canadian Vehicle Owners . . . . . . . . iii
Capacities and
Specifications . . . . . . . . . . . . . . . . 12-2 Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 9-32
Tailgate . . . . . . . . . . . . . . . . . . . . . . . 2-10
Winter Driving . . . . . . . . . . . . . . . . 9-12
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . . 4-3
Cargo Lamp . . . . . . . . . . . . . . . . . . . . 6-6
Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
Center Console Storage . . . . . . . . 4-2
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 10-39
Chains, Tire . . . . . . . . . . . . . . . . . . 10-74
Charging System Light . . . . . . . . 5-18
Check Engine Light . . . . . . . . . . . . . . . . . . 5-18
IgnitionTransmission Lock . . . . . . . . 10-34

Black plate (5,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
INDEX i-5
FlexFuelE85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-65
Floor Console Storage . . . . . . . . . . 4-3
Floor Mats . . . . . . . . . . . . . . . . . . .10-105
Fluid AutomaticTransmission . . . . . . . 10-12, 10-15
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-27
Four-Wheel Drive Transfer Case . . . . . . . . . . . . . . . 9-40
Power Steering . . . . . . . . . . . . . 10-24
Washer . . . . . . . . . . . . . . . . . . . . . 10-25
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 6-5 Bulb Replacement . . . . . . . . . . 10-37
Folding Mirrors . . . . . . . . . . . . . . . . 2-16
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . 9-59
Four-Wheel Drive . . . . . . . 9-40, 10-29
Four-Wheel-Drive Light . . . . . . . . 5-22
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Axle . . . . . . . . . . . . . . . . . . . . 10-30 Front Fog Lamp
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Front Seats Heated and Cooled . . . . . . . . . . . . 3-7
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-63 Additives . . . . . . . . . . . . . . . . . . . . . 9-64
Economy Driving . . . . . . . . . . . . . 1-21
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-67
Filling the Tank . . . . . . . . . . . . . . . 9-66
Foreign Countries . . . . . . . . . . . . 9-64
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Low Fuel Warning Light . . . . . . . 5-25
Management, Active . . . . . . . . . . 9-32
Requirements, California . . . . . 9-64
System Messages . . . . . . . . . . . . 5-35
Full-Size Spare Tire . . . . . . . . . . 10-86
Fuses . . . . . . . . . . . . . . . . . . . . . . . . 10-41 Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-41
Instrument Panel
Fuse Block . . . . . . . . . 10-45, 10-48G
Garage Door Opener . . . . . . . . . . 5-49Programming . . . . . . . . . . . . . . . . . 5-49
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 5-13
Engine Oil Pressure . . . . . . . . . . 5-12
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Odometer . . . . . . . . . . . . . . . . . . . . . 5-11
Speedometer . . . . . . . . . . . . . . . . . 5-11
Tachometer . . . . . . . . . . . . . . . . . . . 5-11
Transmission Temperature . . . . 5-14
Trip Odometer . . . . . . . . . . . . . . . . 5-11
Voltmeter . . . . . . . . . . . . . . . . . . . . . 5-15
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . . 5-8
General Information Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-68
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glass Replacement . . . . . . . . . . . 10-35
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-5

Black plate (6,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
i-6 INDEX
H
Halogen Bulbs . . . . . . . . . . . . . . . . 10-36
Hazard Warning Flashers . . . . . . . 6-4
Head Restraints . . . . . . . . . . . . . . . . 3-2
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . 10-36
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-3
Bulb Replacement . . . . . . . . . . 10-36
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-36
High-Beam On Light . . . . . . . . . . 5-26
High/Low Beam Changer . . . . . . 6-2
Lamps On Reminder . . . . . . . . . 5-26
Heated Steering Wheel . . . . . . . . . . . . . . . . 5-3
Heated and Cooled Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Heated Mirrors . . . . . . . . . . . . . . . . . 2-17
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 9-28
High-Beam On Light . . . . . . . . . . . 5-26 High-Speed Operation . . . . . . . . 10-60
Hill and Mountain Roads . . . . . . . 9-11
Hill Descent Control (HDC) . . . . 9-51
Hill Descent Control Light . . . . . . 5-22
Hill Start Assist (HSA) . . . . . . . . . 9-48
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . . . 3-11
I
Idle SystemFast . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
Ignition Positions . . . . . . . . . . . . . . 9-24
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 10-34
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-12
Indicator Vehicle Ahead . . . . . . . . . . . . . . . . 5-23
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-32
Infotainment . . . . . . . . . . . . . . . . . . . . 7-1
Infotainment System . . . . . . . . . . 13-15
Instrument Cluster . . . . . . . . . . . . . . 5-9
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . 4-1 Interior Rearview Mirrors . . . . . . . 2-19
Introduction . . . . . . . . . . . . . . . . . . . . . . . iii
J
Jump Starting . . . . . . . . . . . . . . . . . 10-87
K
Key and Lock Messages . . . . . . . 5-35
Keyless Entry
Remote (RKE) System . . . . . . . . 2-4
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
L
Labeling, Tire Sidewall . . . . . . . . 10-52
Lamps
Auxiliary RoofMounted Lamp . . . . . . . . . . . . . . . 6-5
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . . 6-2
Fog . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Malfunction Indicator . . . . . . . . . 5-18

Black plate (8,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
i-8 INDEX
MessagesAirbag System . . . . . . . . . . . . . . . . 5-37
Battery Voltage and
Charging . . . . . . . . . . . . . . . . . . . . 5-31
Brake System . . . . . . . . . . . . . . . . 5-32
Compass . . . . . . . . . . . . . . . . . . . . . 5-32
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-33
Engine Cooling System . . . . . . . 5-33
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-34
Engine Power . . . . . . . . . . . . . . . . 5-34
Fuel System . . . . . . . . . . . . . . . . . . 5-35
Key and Lock . . . . . . . . . . . . . . . . . 5-35
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
Object Detection System . . . . . 5-35
Ride Control System . . . . . . . . . . 5-36
Safety Belt . . . . . . . . . . . . . . . . . . . . 5-37
Security . . . . . . . . . . . . . . . . . . . . . . 5-38
Steering System . . . . . . . . . . . . . . 5-38
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
Transmission . . . . . . . . . . . . . . . . . 5-39
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-31
Vehicle Reminder . . . . . . . . . . . . . 5-41
Vehicle Speed . . . . . . . . . . . . . . . . 5-42
Washer Fluid . . . . . . . . . . . . . . . . . 5-42 Mirrors
Automatic Dimming . . . . . . . . . . . 2-17
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . 2-19
Blind Spot . . . . . . . . . . . . . . . . . . . . 2-17
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-14
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-16
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-17
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Tilt in Reverse . . . . . . . . . . . . . . . . 2-18
Trailer Tow . . . . . . . . . . . . . . . . . . . . 2-14
Mirrors, Interior Rearview . . . . . . 2-19
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-61
N
NavigationOnStar®. . . . . . . . . . . . . . . . . . . . . . 14-3
New Vehicle Break-In . . . . . . . . . . 9-23
Noise Control System . . . . . . . . 10-32
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-35
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-11 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 9-6 Driving . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil Life System . . . . . .10-11
Engine Oil PressureGauge . . . . . . . . . . . . . . . . . . . . . . 5-12
Messages . . . . . . . . . . . . . . . . . . . . 5-34
Pressure Light . . . . . . . . . . . . . . . . 5-25
Older Children, Restraints . . . . . 3-30
Online Owner Center . . . . . . . . . . 13-4
OnStar . . . . . . . . . . . . . . . . . . . . . . . 13-15
OnStar
®
System, In Brief . . . . . . . . . . . . . . 1-22
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . 14-6
OnStar
®Connections . . . . . . . . . . 14-4
OnStar®Emergency . . . . . . . . . . . 14-2
OnStar®Navigation . . . . . . . . . . . . 14-3
OnStar®Overview . . . . . . . . . . . . . 14-1

Black plate (11,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - crc - 6/20/14
INDEX i-11
Service . . . . . . . . . . . . . . . . . . . . . . . . . 8-6Accessories and
Modifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-3
Engine Soon Light . . . . . . . . . . . . 5-18
Maintenance Records . . . . . . .11-16
Maintenance, General Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1
Publications Ordering Information . . . . . . . . . . . . . . . . .13-11
Scheduling Appointments . . . . . 13-7
Services Special Application . . . . . . . . . . . 11-8
Servicing the Airbag . . . . . . . . . . . 3-28
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . 10-34
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 9-30
Out of Park . . . . . . . . . . . . . . . . . . . 9-31
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 6-4
Snow Plow . . . . . . . . . . . . . . . . . . . . 9-88
Special Application Services . . . 11-8 Specifications and
Capacities . . . . . . . . . . . . . . . . . . . . 12-2
Speedometer . . . . . . . . . . . . . . . . . . 5-11
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 5-23
Start Assist, Hills . . . . . . . . . . . . . . 9-48
Start Vehicle, Remote . . . . . . . . . . 2-7
Starter Switch Check . . . . . . . . . 10-33
Starting the Engine . . . . . . . . . . . . 9-26
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Fluid, Power . . . . . . . . . . . . . . . . 10-24
Heated Wheel . . . . . . . . . . . . . . . . . 5-3
Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-2
Steering System Messages . . . . 5-38
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . 10-37
Storage Areas Center Console . . . . . . . . . . . . . . . . 4-2
Floor Console . . . . . . . . . . . . . . . . . 4-3
Glove Box . . . . . . . . . . . . . . . . . . . . . 4-1
Instrument Panel . . . . . . . . . . . . . . 4-1
Sunglasses . . . . . . . . . . . . . . . . . . . . 4-2
Storage Compartments . . . . . . . . . 4-1
Stuck Vehicle . . . . . . . . . . . . . . . . . . 9-14
Sun Visors . . . . . . . . . . . . . . . . . . . . . 2-22 Sunglass Storage . . . . . . . . . . . . . . . 4-2
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . iv
System
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . . 9-59
Infotainment . . . . . . . . . . . . 7-1, 13-15
Noise Control . . . . . . . . . . . . . . . 10-32
Systems Driver Assistance . . . . . . . . . . . . . 9-55
T
Tachometer . . . . . . . . . . . . . . . . . . . . 5-11
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . 2-10
TaillampsBulb Replacement . . . . . . . . . . 10-37
Text Telephone (TTY) Users . . . 13-4
Theft-Deterrent Systems . . . . . . . 2-13 Immobilizer . . . . . . . . . . . . . . . . . . . 2-12
Throttle, Adjustable . . . . . . . . . . . . 9-23
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 10-50 All-Season . . . . . . . . . . . . . . . . . . 10-51
All-Terrain . . . . . . . . . . . . . . . . . . 10-52
Buying New Tires . . . . . . . . . . . 10-69
Chains . . . . . . . . . . . . . . . . . . . . . . 10-74