
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 (1,1)GMC Sierra Owner Manual - 2011
Storage 4-1
Storage
Storage Compartments
Instrument Panel Storage . . . . 4-1
Glove Box . . . . . . . . . . . . . . . . . . . . 4-1
Cupholders . . . . . . . . . . . . . . . . . . . 4-1
Armrest Storage . . . . . . . . . . . . . . 4-1
Center Console Storage . . . . . . 4-2
Storage
Compartments
Instrument Panel Storage
For vehicles equipped with an
instrument panel storage area, it is
located above the glove box.
Access the storage area by
pressing and holding in the driver
side of the handle and pull out on
the exposed portion of the handle.
Glove Box
Lift up on the glove box lever to
open it.
Cupholders
Vehicles with cupholders have
them located on and behind the
center console and in the rear seat
armrest. Pull the loop down on the
rear seat armrest to access the
cupholders.
Pull downward on the cover to
access the cupholders behind the
center console.
Armrest Storage
Vehicles with a rear seat
armrest have two cupholders.
Pull the armrest down from the rear
seatback to access the cupholders.

Black plate (12,1)GMC Sierra Owner Manual - 2011
5-12 Instruments and Controls
Ashtrays
The vehicle may have a front
ashtray located near the center of
the instrument panel. Pull on the
door to open it. The ashtray may
have a cigarette lighter.
Notice:If papers, pins, or other
flammable items are put in the
ashtray, hot cigarettes or other
smoking materials could ignite
them and possibly damage the
vehicle. Never put flammable
items in the ashtray.
To remove the ashtray, open the
door and pull the ashtray bin toward
you. To replace the ashtray, insert
the ashtray bin inside the ashtray
door and press down until it
engages.
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to
the warning lights and gauges
could prevent injury.
Warning lights come on when there
could be a problem with a vehicle
function. Some warning lights come
on briefly when the engine is started
to indicate they are working. Gauges can indicate when there
could be a problem with a vehicle
function. Often gauges and warning
lights work together to indicate a
problem with the vehicle.
When one of the warning lights
comes on and stays on while
driving, or when one of the gauges
shows there may be a problem,
check the section that explains what
to do. Follow this manual's advice.
Waiting to do repairs can be costly
and even dangerous.

Black plate (14,1)GMC Sierra Owner Manual - 2011
5-14 Instruments and Controls
For vehicles with a DURAMAX®
Diesel engine, see the DURAMAX®
Diesel Supplement for more
information.
For vehicles with a Hybrid, see
the Hybrid Supplement for more
information.
Speedometer
The speedometer shows the
vehicle speed in both kilometers
per hour (km/h) and miles per
hour (mph).
Odometer
The odometer shows how far the
vehicle has been driven, in either
kilometers or miles.
Engine Hour Meter Display
The Driver Information Center (DIC)
can also display the number of
hours the engine has run. To display
the engine hours, turn the ignition
off, then press and hold the reset
button for at least four seconds.
The hour meter displays for up to
30 seconds, or until the ignition is
turned on. SeeDriver Information
Center (DIC) on page 5‑33 for more
information.
Trip Odometer
The trip odometer shows how far
the vehicle has been driven since
the trip odometer was last set
to zero.
Press the reset button, located on
the instrument panel cluster next
to the voltmeter, to toggle between
the trip odometer and the regular
odometer. Holding the reset button
for approximately one second while
the trip odometer is displayed will
reset it.
To display the odometer reading
with the ignition off, press the reset
button.
See Driver Information Center (DIC)
on page 5‑33 for more information.

Black plate (27,1)GMC Sierra Owner Manual - 2011
Instruments and Controls 5-27
Emissions Inspection and
Maintenance Programs
Some state/provincial and
local governments may have
programs to inspect the on-vehicle
emission control equipment.
For the inspection, the emission
system test equipment is connected
to the vehicle’s Data Link
Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. See your dealer if assistance
is needed.The vehicle may not pass
inspection if:
.The malfunction indicator lamp is
on with the engine running, or if
the light does not come on when
the ignition is turned to ON/RUN
while the engine is off.
.The critical emission control
systems have not been
completely diagnosed by
the system. This can happen
if the battery has recently
been replaced or if the battery
has run down. The diagnostic
system evaluates critical
emission control systems during
normal driving. This can take
several days of routine driving.
If this has been done and the
vehicle still does not pass the
inspection, your dealer can
prepare the vehicle for
inspection.
Brake System Warning
Light
With the ignition on, the brake
system warning light comes on
when the parking brake is set. If the
vehicle is driven with the parking
brake engaged, a chime sounds
when the vehicle speed is greater
than 8 km/h (5 mph).
The vehicle brake system
consists of two hydraulic circuits.
If one circuit is not working, the
remaining circuit can still work to
stop the vehicle. For normal braking
performance, both circuits need to
be working
If the warning light comes on and
a chime sounds there could be a
brake problem. Have the brake
system inspected right away.

Black plate (33,1)GMC Sierra Owner Manual - 2011
Instruments and Controls 5-33
Information Displays
Driver Information
Center (DIC)
The vehicle has a Driver Information
Center (DIC).
The DIC displays information about
this vehicle. It also displays warning
messages if a system problem is
detected.
All messages will appear in the
DIC display located below the
tachometer in the instrument panel
cluster.
The DIC comes on when the ignition
is on. After a short delay, the DIC
will display the information that was
last displayed before the engine
was turned off.The DIC has different displays
which can be accessed by
pressing the DIC buttons located
on the instrument panel, next to
the steering wheel. If the vehicle
does not have DIC buttons, the trip
odometer reset stem can be used
to access some of the menu items.
The DIC displays trip, fuel, and
vehicle system information, and
warning messages if a system
problem is detected.
The DIC also allows some features
to be customized. See
Vehicle
Personalization (with DIC Buttons)
on page 5‑52 for more information.
DIC Buttons
The buttons are the trip/fuel, vehicle
information, customization, and
set/reset buttons. The button
functions are detailed in the
following pages.
3(Trip/Fuel):Press this
button to display the odometer,
trip odometer, fuel range, average
economy, fuel used, timer,
transmission temperature, and
instantaneous economy and Active
Fuel Management™ indicator.

Black plate (42,1)GMC Sierra Owner Manual - 2011
5-42 Instruments and Controls
SERVICE BATTERY
CHARGING SYSTEM
On some vehicles, this message
displays if there is a problem
with the battery charging system.
Under certain conditions, the
charging system light may also turn
on in the instrument panel cluster.
SeeCharging System Light on
page 5‑24. Driving with this problem
could drain the battery. Turn off all
unnecessary accessories. Have the
electrical system checked as soon
as possible. See your dealer.
Brake System Messages
SERVICE BRAKE SYSTEM
This message displays along with
the brake system warning light if
there is a problem with the brake
system. See Brake System Warning
Light on page 5‑27. If this message
appears, stop as soon as possible
and turn off the vehicle. Restart the
vehicle and check for the message
on the DIC display. If the message
is still displayed or appears again
when you begin driving, the brake
system needs service as soon as
possible. See your dealer.
SERVICE BRAKES SOON
On some vehicles, this message
displays if there is a problem with
the brake system. If this message
appears, stop as soon as possible
and turn off the vehicle. Restart the
vehicle and check for the message
on the DIC display. If the message
is still displayed or appears again
when you begin driving, the brake
system needs service. See your
dealer.
SERVICE TRAILER BRAKE
SYSTEM
On vehicles with the Integrated
Trailer Brake Control (ITBC) system,
this message displays and a chime
may sound when there is a problem
with the ITBC system.
When this message displays, power
is no longer available to the trailer
brakes.