2011 GMC SIERRA wheel

Black plate (29,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-29
Airbag System
The vehicle has the following
airbags:
.A frontal airbag for the driver.
.A frontal airbag for the right front
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 right front
passenger.
.A roof-rail airbag for the driver
and the passenger seated
directly behind the driver.
.A roof-rail airbag for the right
front passenger and the person
seated directly behind the right
front passenger. All of the airbags in the vehicle will
have the word AIRBAG embossed
in the trim or on an attached label
near the deployment opening.
For frontal airbags, the word
AIRBAG will appear on the middle
part of the steering wheel for the
driver and on the instrument panel
for the right front passenger.
With seat‐mounted side impact
airbags, the word AIRBAG will
appear on the side of the seatback
closest to the door.
With roof-rail airbags, the word
AIRBAG will appear along the
headliner or trim.
Airbags are designed to supplement
the protection provided by safety
belts. Even though today's airbags
are also designed to help reduce
the risk of injury from the force of an
inflating bag, all airbags must inflate
very quickly to do their job. Here are the most important things
to know about the airbag system:
{WARNING
You can be severely injured or
killed in a crash if you are not
wearing your safety belt
—even
if you have airbags. Airbags are
designed to work with safety
belts, but do not replace them.
Also, airbags are not designed
to deploy in every crash. In some
crashes safety belts are your only
restraint. See When Should an
Airbag Inflate? on page 3‑32.
Wearing your safety belt during a
crash helps reduce your chance
of hitting things inside the vehicle
or being ejected from it. Airbags
are “supplemental restraints” to
the safety belts. Everyone in your
vehicle should wear a safety belt
properly —whether or not there is
an airbag for that person.

Black plate (31,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-31
Where Are the Airbags?
The driver airbag is in the middle of
the steering wheel.
The right front passenger airbag
is in the instrument panel on the
passenger side.Driver Side Shown, PassengerSide Similar
If the vehicle has seat‐mounted side
impact airbags for the driver and
right front passenger, they are in
the side of the seatbacks closest
to the door.

Black plate (32,1)GMC Sierra Owner Manual - 2011
3-32 Seats and Restraints
Driver Side Shown, PassengerSide Similar
If the vehicle has roof-rail airbags
for the driver, right front passenger,
and second row outboard
passengers, they are in the ceiling
above the side windows.
{WARNING
If something is between an
occupant and an airbag, the
airbag might not inflate properly
or it might force the object into
that person causing severe
injury or even death. The path
of an inflating airbag must be
kept clear. Do not put anything
between an occupant and an
airbag, and do not attach or put
anything on the steering wheel
hub or on or near any other
airbag covering.
Do not use seat accessories
that block the inflation path of a
seat-mounted side impact airbag.
Never secure anything to the
roof of a vehicle with roof-rail
airbags by routing a rope or tie
down through any door or window
opening. If you do, the path of an
inflating roof-rail airbag will be
blocked.
When Should an Airbag
Inflate?
Frontal airbags are designed
to inflate in moderate to severe
frontal or near-frontal crashes
to help reduce the potential for
severe injuries mainly to the driver's
or right front passenger's head
and chest. However, they are
only designed to inflate if the
impact exceeds a predetermined
deployment threshold. Deployment
thresholds are used to predict how
severe a crash is likely to be in time
for the airbags to inflate and help
restrain the occupants.
Whether the frontal airbags will
or should deploy is not based on
how fast your vehicle is traveling.
It depends largely on what you hit,
the direction of the impact, and how
quickly your vehicle slows down.

Black plate (34,1)GMC Sierra Owner Manual - 2011
3-34 Seats and Restraints
The vehicle may or may not have
seat‐mounted side impact and
roof-rail airbags. SeeAirbag System
on page 3‑29. Seat‐mounted side
impact and roof-rail airbags are
intended to inflate in moderate to
severe side crashes. In addition,
these roof-rail airbags are intended
to inflate during a rollover or in a
severe frontal impact. Seat‐mounted
side impact and roof-rail airbags will
inflate if the crash severity is above
the system's designed threshold
level. The threshold level can vary
with specific vehicle design.
Roof-rail airbags are not
intended to inflate in rear impacts.
A seat‐mounted side impact airbag
is intended to deploy on the side
of the vehicle that is struck. Both
roof-rail airbags will deploy when
either side of the vehicle is struck,
or if the sensing system predicts
that the vehicle is about to roll over,
or in a severe frontal impact. In any particular crash, no one
can say whether an airbag should
have inflated simply because of
the damage to a vehicle or because
of what the repair costs were.
For frontal airbags, inflation is
determined by what the vehicle hits,
the angle of the impact, and how
quickly the vehicle slows down.
For seat‐mounted side impact and
roof-rail airbags, deployment is
determined by the location and
severity of the side impact. In a
rollover event, roof-rail airbag
deployment is determined by
the direction of the roll.What Makes an Airbag
Inflate?
In a deployment event, the sensing
system sends an electrical signal
triggering a release of gas from the
inflator. Gas from the inflator fills the
airbag causing the bag to break out
of the cover and deploy. The inflator,
the airbag, and related hardware are
all part of the airbag module.
Frontal airbag modules are located
inside the steering wheel and
instrument panel. For vehicles with
seat‐mounted side impact airbags,
there are airbags modules in the
side of the front seatbacks closest
to the door. For vehicles with
roof-rail airbags, there are airbag
modules in the ceiling of the vehicle,
near the side windows that have
occupant seating positions.

Black plate (35,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-35
How Does an Airbag
Restrain?
In moderate to severe frontal
or near frontal collisions, even
belted occupants can contact the
steering wheel or the instrument
panel. In moderate to severe side
collisions, even belted occupants
can contact the inside of the
vehicle.
Airbags supplement the protection
provided by safety belts.
Frontal airbags distribute the
force of the impact more evenly
over the occupant's upper body,
stopping the occupant more
gradually. Seat‐mounted side
impact and roof-rail airbags
distribute the force of the
impact more evenly over the
occupant's upper body.Rollover capable roof-rail airbags
are designed to help contain
the head and chest of occupants
in the outboard seating positions
in the first and second rows.
The rollover capable roof-rail
airbags are designed to help
reduce the risk of full or partial
ejection in rollover events, although
no system can prevent all such
ejections.
But airbags would not help in
many types of collisions, primarily
because the occupant's motion
is not toward those airbags.
See
When Should an Airbag
Inflate? on page 3‑32 for more
information.
Airbags should never be regarded
as anything more than a supplement
to safety belts.
What Will You See After
an Airbag Inflates?
After the frontal airbags and
seat-mounted side impact airbags
inflate, they quickly deflate, so
quickly that some people may not
even realize an airbag inflated.
Roof-rail airbags may still be at least
partially inflated for some time after
they deploy. Some components of
the airbag module may be hot for
several minutes. For location of the
airbag modules, see What Makes
an Airbag Inflate? on page 3‑34.
The parts of the airbag that
come into contact with you
may be warm, but not too hot
to touch. There may be some
smoke and dust coming from
the vents in the deflated airbags.

Black plate (46,1)GMC Sierra Owner Manual - 2011
3-46 Seats and Restraints
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle
should be serviced. There are
parts of the airbag system in
several places around the vehicle.
Your dealer and the service manual
have information about servicing
the vehicle and the airbag system.
To purchase a service manual, see
Service Publications Ordering
Information on page 13‑15.
{WARNING
For up to 10 seconds after the
ignition is turned off and the
battery is disconnected, an airbag
can still inflate during improper
service. You can be injured if you
are close to an airbag when it
inflates. Avoid yellow connectors.
They are probably part of the
airbag system. Be sure to follow
proper service procedures, and
make sure the person performing
work for you is qualified to do so.
Adding Equipment to the
Airbag-Equipped Vehicle
Q: Is there anything I might addto or change about the vehicle
that could keep the airbags
from working properly?
A: Yes. If you add things that
change your vehicle's frame,
bumper system, height, front end
or side sheet metal, they may
keep the airbag system from
working properly. Changing or
moving any parts of the front
seats, safety belts, the airbag
sensing and diagnostic module,
steering wheel, instrument
panel, roof-rail airbag modules,
ceiling headliner or pillar garnish
trim, overhead console, front
sensors, side impact sensors,
or airbag wiring can affect the
operation of the airbag system.

Black plate (47,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-47
In addition, the vehicle may have
a passenger sensing system
for the right front passenger's
position, which includes sensors
that are part of the passenger's
seat. The passenger sensing
system may not operate
properly if the original seat
trim is replaced with non-GM
covers, upholstery or trim,
or with GM covers, upholstery
or trim designed for a different
vehicle. Any object, such as
an aftermarket seat heater
or a comfort enhancing pad
or device, installed under or
on top of the seat fabric, could
also interfere with the operation
of the passenger sensing
system. This could either
prevent proper deployment
of the passenger airbag(s) or
prevent the passenger sensing
system from properly turning
off the passenger airbag(s).
SeePassenger Sensing
System on page 3‑40. If you have any questions
about this, you should contact
Customer Assistance before you
modify your vehicle. The phone
numbers and addresses for
Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in
this manual. See
Customer
Satisfaction Procedure (U.S.
and Canada) on page 13‑1
or Customer Satisfaction
Procedure (Mexico) on
page 13‑3.
If the vehicle has rollover
roof-rail airbags, see Different
Size Tires and Wheels on
page 10‑79 for additional
important information. Q: What if I added a snow plow?
Will it keep the airbags from
working properly?
A: We have designed our airbag
systems to work properly under
a wide range of conditions,
including snow plowing with
vehicles that have the optional
Snow Plow Prep Package
(RPO VYU). But do not change
or defeat the snow plow's
“tripping mechanism.” If you do,
it can damage your snow plow
and your vehicle, and it may
cause an airbag inflation.

Black plate (1,1)GMC Sierra Owner Manual - 2011
Instruments and Controls 5-1
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 5-2
Steering Wheel Controls . . . . . . 5-3
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Windshield Wiper/Washer . . . . . 5-5
Compass . . . . . . . . . . . . . . . . . . . . . 5-6
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Power Outlets . . . . . . . . . . . . . . . 5-10
Cigarette Lighter . . . . . . . . . . . . . 5-11
Ashtrays . . . . . . . . . . . . . . . . . . . . . 5-12
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . 5-12
Instrument Cluster . . . . . . . . . . . 5-13
Speedometer . . . . . . . . . . . . . . . . 5-14
Odometer . . . . . . . . . . . . . . . . . . . . 5-14
Trip Odometer . . . . . . . . . . . . . . . 5-14
Tachometer . . . . . . . . . . . . . . . . . . 5-15
Fuel Gauge . . . . . . . . . . . . . . . . . . 5-15 Engine Oil Pressure
Gauge . . . . . . . . . . . . . . . . . . . . . . 5-16
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-17
Voltmeter Gauge . . . . . . . . . . . . . 5-18
Safety Belt Reminders . . . . . . . 5-19
Airbag Readiness Light . . . . . . 5-20
Airbag On-Off Light . . . . . . . . . . 5-21
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 5-23
Charging System Light . . . . . . 5-24
Malfunction Indicator Lamp . . . . . . . . . . . . . 5-25
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . 5-27
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . 5-28
Four-Wheel-Drive Light . . . . . . 5-29
Tow/Haul Mode Light . . . . . . . . 5-29
StabiliTrak®Indicator Light . . . 5-30
Tire Pressure Light . . . . . . . . . . 5-30
Engine Oil Pressure Light . . . . 5-31
Low Fuel Warning Light . . . . . . 5-31
Security Light . . . . . . . . . . . . . . . . 5-32
High-Beam On Light . . . . . . . . . 5-32
Front Fog Lamp Light . . . . . . . . 5-32
Cruise Control Light . . . . . . . . . 5-32
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . 5-33
Vehicle Messages
Vehicle Messages . . . . . . . . . . . 5-41
Battery Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . 5-41
Brake System Messages . . . . 5-42
Door Ajar Messages . . . . . . . . . 5-43
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . 5-44
Engine Oil Messages . . . . . . . . 5-45
Engine Power Messages . . . . 5-45
Fuel System Messages . . . . . . 5-46
Key and Lock Messages . . . . . 5-46
Lamp Messages . . . . . . . . . . . . . 5-46
Object Detection System Messages . . . . . . . . . . . . . . . . . . 5-46
Ride Control System Messages . . . . . . . . . . . . . . . . . . 5-47
Airbag System Messages . . . . 5-48
Anti-Theft Alarm System Messages . . . . . . . . . . . . . . . . . . 5-48
Starting the Vehicle Messages . . . . . . . . . . . . . . . . . . 5-48