2010 GMC SIERRA Owner's Manual

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.
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.
1-35

OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can
be used to interact with OnStar hands-free calling.
SeeAudio Steering Wheel Controls
on page 4‑145for
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.
1-36

Section 2 Seats and Restraint System
Head Restraints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Manual Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Power Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Manual Lumbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Power Lumbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Memory Seat, Mirrors, and Pedals . . . . . . . . . . . . . . 2-8
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Seatback Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Center Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Rear Seat Operation (Extended Cab Full Bench) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Rear Seat Operation (All Split Bench and Hybrid Full Bench) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Safety Belts: They Are for Everyone . . . . . . . . . . . 2-16
How to Wear Safety Belts Properly . . . . . . . . . . . . 2-21
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Safety Belt Use During Pregnancy . . . . . . . . . . . . . 2-37
Lap Belt (Crew and Extended Cab) . . . . . . . . . . . . 2-37
Safety Belt Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38 Child Restraints
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Infants and Young Children . . . . . . . . . . . . . . . . . . . . 2-42
Child Restraint Systems . . . . . . . . . . . . . . . . . . . . . . . 2-46
Where to Put the Restraint . . . . . . . . . . . . . . . . . . . . . 2-48
Lower Anchors and Tethers for Children (LATCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Securing a Child Restraint in a Rear Seat Position . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Securing a Child Restraint in the Center Front Seat Position . . . . . . . . . . . . . . . . . . 2-61
Securing a Child Restraint in the Right Front Seat Position (With Passenger
Sensing System) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
Securing a Child Restraint in the Right Front Seat Position (With Airbag
Off Switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
Securing a Child Restraint in the Right Front Seat Position (Heavy Duty
Crew Cab Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
2-1

Section 2 Seats and Restraint System
Airbag System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
Where Are the Airbags? . . . . . . . . . . . . . . . . . . . . . . . 2-75
When Should an Airbag Inflate? . . . . . . . . . . . . . . . 2-78
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . 2-79
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . 2-79
What Will You See After an Airbag Inflates? . . . 2-80
Airbag Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-82
Passenger Sensing System . . . . . . . . . . . . . . . . . . . 2-85
Servicing Your Airbag-Equipped Vehicle . . . . . . . 2-91
Adding Equipment to Your Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-91 Restraint System Check
. . . . . . . . . . . . . . . . . . . . . . . . .2-93
Checking the Restraint Systems . . . . . . . . . . . . . . . 2-93
Replacing Restraint System Parts After a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-94
2-2

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.
2-3

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
Manual Seats
{WARNING:
You can lose control of the vehicle if you try to
adjust a manual driver's seat while the vehicle is
moving. The sudden movement could startle and
confuse you, or make you push a pedal when you
do not want to. Adjust the driver's seat only when
the vehicle is not moving.
2-4

If the vehicle has a manual seat, it can be moved
forward or rearward.
1. Lift the bar to unlockthe seat.
2. Slide the seat to the desired position and
release the bar.
Try to move the seat with your body to be sure the seat
is locked in place.
Power Seats
Driver's Seat with Power Seat Control, Power Recline, 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.
2-5

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”
under Reclining Seatbacks on page 2‑10.
A vehicle with a memory function allows seat settings to
be saved and recalled. See Memory Seat, Mirrors, and
Pedals
on page 2‑8for more information.
Manual Lumbar
On vehicles with this feature the control is located on
the outboard side of the seat.
Increase or decrease lumbar support by turning the
knob forward or rearward.
2-6