2010 GMC SIERRA DENALI Owners Manual

Roadside Assistance Program
U.S.:1-800-GMC-8782 (462-8782)
TTY Users: 1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new GMC, you are automatically
enrolled in the Roadside Assistance program. This
program provides technically trained advisors who are
available 24 hours a day, 365 days a year, minor repair
information or towing arrangements.
Roadside Assistance and OnStar
If you have a current OnStar subscription, press the
OnStar button and the current GPS location will be sent
to an OnStar Advisor who will assess your problem,
contact Roadside Assistance, and relay exact location
to get you the help you need.
Online Owner Center
The Online Owner Center is a complimentary service
that includes online service reminders, vehicle
maintenance tips, online owner manual, special
privileges and more.
Sign up today at:
www.gmownercenter.com/gmc (U.S.) or
www.gm.ca (Canada).
OnStar®
OnStar®uses several innovative technologies and live
advisors to provide a wide range of safety, security,
navigation, diagnostics, and calling services.
Automatic Crash Response
In a crash, built in sensors can automatically alert an
OnStar advisor who is immediately connected to the
vehicle to see if you need help.
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How OnStar Service Works
Q
:This blue button connects you to a specially
trained OnStar advisor to verify your account
information and to answer questions.
]: Push this red emergency button to get priority help
from specially trained OnStar emergency advisors.
X: Push this button for hands‐free, voice‐activated
calling and to give voice commands for turn‐by‐turn
navigation.
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 on all vehicles. For more
information see the OnStar Owner's Guide or visit
www.onstar.com (U.S.) or www.onstar.ca (Canada),
contact OnStar at 1-888-4-ONSTAR (1‐888‐466‐7827)
or TTY 1‐877‐248‐2080, or press
Qto speak with an
OnStar advisor 24 hours a day, 7 days a week.
For a full description of OnStar services and system
limitations, see the OnStar Owner's Guide in the
glove box.
OnStar service is subject to the OnStar terms and
conditions included in the OnStar Subscriber
Information. OnStar service cannot work unless the vehicle is in a
place where OnStar has an agreement with a wireless
service provider for service in that area. OnStar service
also cannot work unless the vehicle is in a place where
the wireless service provider OnStar has hired for that
area has coverage, network capacity and reception
when the service is needed, and technology that is
compatible with the OnStar service. Not all services are
available everywhere, particularly in remote or enclosed
areas, or at all times.
The OnStar system can record and transmit vehicle
information. This information is automatically sent to an
OnStar call center when
Qis pressed,]is pressed,
or if the airbags or ACR system deploy. This information
usually includes the vehicle's GPS location and, in the
event of a crash, additional information regarding the
crash that the vehicle was involved in (e.g. the direction
from which the vehicle was hit). When the virtual
advisor feature of OnStar hands-free calling is used, the
vehicle also sends OnStar the vehicle's GPS location
so they can provide services where it is located.
Location information about the vehicle is only available
if the GPS satellite signals are unobstructed and
available.
1-28

The vehicle must have a working electrical system,
including adequate battery power, for the OnStar
equipment to operate. There are other problems OnStar
cannot control that may prevent OnStar from providing
OnStar service at any particular time or place. Some
examples are damage to important parts of the vehicle
in a crash, hills, tall buildings, tunnels, weather or
wireless phone network congestion.
OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be
used to interact with OnStar hands-free calling. See
Audio Steering Wheel Controls
on page 4‑137for more
information.
On some vehicles, the mute button can be used to dial
numbers into voice mail systems, or to dial phone
extensions. See the OnStar Owner's Guide for more
information.
Your Responsibility
Increase the volume of the radio if the OnStar advisor
cannot be heard.
If the light next to the OnStar buttons is red, the system
may not be functioning properly. Press
Qand request a
vehicle diagnostic. If the light appears clear (no light is
appearing), your OnStar subscription has expired and
all services have been deactivated. Press
Qto confirm
that the OnStar equipment is active.
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2NOTES
1-30

Section 2 Seats and Restraint System
Head Restraints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Power Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Power Lumbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Heated and Cooled Seats . . . . . . . . . . . . . . . . . . . . . . . 2-5
Memory Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Power Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . 2-8
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Rear Seat Operation (Split Bench) . . . . . . . . . . . . . 2-10
Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Safety Belts: They Are for Everyone . . . . . . . . . . . 2-11
How to Wear Safety Belts Properly . . . . . . . . . . . . 2-16
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Safety Belt Use During Pregnancy . . . . . . . . . . . . . 2-31
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Safety Belt Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Child Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Infants and Young Children . . . . . . . . . . . . . . . . . . . . 2-36
Child Restraint Systems . . . . . . . . . . . . . . . . . . . . . . . 2-39 Where to Put the Restraint . . . . . . . . . . . . . . . . . . . . . 2-42
Lower Anchors and Tethers for Children
(LATCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
Securing a Child Restraint in a Rear Seat Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
Securing a Child Restraint in the Right Front Seat Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52
Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Where Are the Airbags? . . . . . . . . . . . . . . . . . . . . . . . 2-58
When Should an Airbag Inflate? . . . . . . . . . . . . . . . 2-61
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . 2-63
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . 2-63
What Will You See After an Airbag Inflates? . . . 2-64
Passenger Sensing System . . . . . . . . . . . . . . . . . . . 2-66
Servicing Your Airbag-Equipped Vehicle . . . . . . . 2-71
Adding Equipment to Your Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
Restraint System Check . . . . . . . . . . . . . . . . . . . . . . . . .2-73
Checking the Restraint Systems . . . . . . . . . . . . . . . 2-73
Replacing Restraint System Parts After a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-74
2-1

Head Restraints
The front seats have adjustable head restraints in the
outboard seating positions.
{WARNING:
With head restraints that are not installed and
adjusted properly, there is a greater chance that
occupants will suffer a neck/spinal injury in a
crash. Do not drive until the head restraints for all
occupants are installed and adjusted properly.
Adjust the head restraint so that the top of the restraint
is at the same height as the top of the occupant's head.
This position reduces the chance of a neck injury in a
crash.
2-2

Pull the head restraint up to raise it. To lower the head
restraint, press the button, located on the top of the
seatback, and push the restraint down.
Push down on the head restraint after the button is
released to make sure that it is locked in place.
The head restraints are not designed to be removed.
The rear seat has head rests that can be adjusted up
and down.
Front Seats
Power Seats
Driver's Seat with Power Seat Control, PowerRecline, and Power Lumbar shown
On a vehicle with power seats, the controls used to
operate them are located on the outboard side of the
seats.
Move the seat forward or rearward by sliding the control
forward or rearward.
2-3

Your vehicle may have additional features to adjust your
vehicle's power seat:
.Raise or lower the front part of the seat cushion by
moving the front of the control up or down.
.Raise or lower the rear part of the seat cushion by
moving the rear of the control up or down.
.Raise or lower the entire seat by moving the entire
control up or down.
On seats with power reclining seatbacks, the control is
located behind the power seat control on the outboard
side of the seats. See Power Reclining Seatbacks
on
page 2‑8.
A vehicle with a memory function allows seat settings to
be saved and recalled. See Memory Features
on
page 2‑6for more information.
Power Lumbar
If the seats have power lumbar, the controls used to
operate this feature are located on the outboard side of
the seats.
.To increase lumbar support, press and hold the
front of the control.
.To decrease lumbar support, press and hold the
rear of the control.
.To raise the height of the lumbar support, press
and hold the top of the control.
.To lower the height of the lumbar support, press
and hold the bottom of the control.
2-4