
Black plate (1,1)GMC Sierra Owner Manual - 2011
2011 GMC Sierra Owner ManualM
In Brief. . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information . . . . . . . . 1-8
Vehicle Features . . . . . . . . . . . . . 1-26
Performance and Maintenance . . . . . . . . . . . . . . . . 1-33
Keys, Doors and Windows . . . 2-1
Keys and Locks . . . . . . . . . . . . . . . 2-2
Doors . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Vehicle Security . . . . . . . . . . . . . . 2-12
Exterior Mirrors . . . . . . . . . . . . . . . 2-15
Interior Mirrors . . . . . . . . . . . . . . . . 2-18
Windows . . . . . . . . . . . . . . . . . . . . . 2-18
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Seats and Restraints . . . . . . . . . 3-1
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats . . . . . . . . . . . . . . . . . . . . 3-3
Rear Seats . . . . . . . . . . . . . . . . . . . 3-10
Safety Belts . . . . . . . . . . . . . . . . . . 3-11
Airbag System . . . . . . . . . . . . . . . . 3-29
Child Restraints . . . . . . . . . . . . . . 3-49 Storage
. . . . . . . . . . . . . . . . . . . . . . . 4-1
Storage Compartments . . . . . . . . 4-1
Instruments and Controls . . . . 5-1
Controls . . . . . . . . . . . . . . . . . . . . . . . 5-2
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . 5-12
Information Displays . . . . . . . . . . 5-33
Vehicle Messages . . . . . . . . . . . . 5-41
Vehicle Personalization . . . . . . . 5-52
Universal Remote System . . . . 5-61
Lighting . . . . . . . . . . . . . . . . . . . . . . . 6-1
Exterior Lighting . . . . . . . . . . . . . . . 6-1
Interior Lighting . . . . . . . . . . . . . . . . 6-7
Lighting Features . . . . . . . . . . . . . . 6-9
Infotainment System . . . . . . . . . 7-1
Introduction . . . . . . . . . . . . . . . . . . . . 7-1
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Audio Players . . . . . . . . . . . . . . . . 7-15
Rear Seat Infotainment . . . . . . . 7-39
Phone . . . . . . . . . . . . . . . . . . . . . . . . 7-50 Climate Controls
. . . . . . . . . . . . . 8-1
Climate Control Systems . . . . . . 8-1
Air Vents . . . . . . . . . . . . . . . . . . . . . 8-11
Driving and Operating . . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-34
Engine Exhaust . . . . . . . . . . . . . . 9-44
Automatic Transmission . . . . . . 9-46
Drive Systems . . . . . . . . . . . . . . . . 9-54
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-68
Ride Control Systems . . . . . . . . 9-70
Cruise Control . . . . . . . . . . . . . . . . 9-73
Object Detection Systems . . . . 9-76
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-84
Towing . . . . . . . . . . . . . . . . . . . . . . . 9-90
Conversions and
Add-Ons . . . . . . . . . . . . . . . . . . . 9-125

Black plate (15,1)GMC Sierra Owner Manual - 2011
In Brief 1-15
Heated Seats
If available, the controls are on the
driver and passenger doors.
I:Press to heat the
seatback only.
J: Press to heat the seat and
seatback.
See Heated Front Seats on
page 3‑8.
Head Restraint
Adjustment
Do not drive until the head restraints
for all occupants are installed and
adjusted properly.
To achieve a comfortable seating
position, change the seatback
recline angle as little as necessary
while keeping the seat and the
head restraint height in the proper
position.
For more information see Head
Restraints on page 3‑2 andSeat
Adjustment on page 3‑3.
Safety Belts
Refer to the following sections for
important information on how to use
safety belts properly.
.Safety Belts on page 3‑11.
.How to Wear Safety Belts
Properly on page 3‑15.
.Lap-Shoulder Belt on page 3‑21.
.Lower Anchors and Tethers for
Children (LATCH System) on
page 3‑57.

Black plate (19,1)GMC Sierra Owner Manual - 2011
Keys, Doors and Windows 2-19
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in
a pulsing sound when either rear
window is down and the front
windows are up. To reduce the
sound, open either a front window
or the sunroof (if equipped).
Manual Windows
Turn the hand crank on each door
to manually raise or lower the
manual windows.
Power Windows
{WARNING
Leaving children in a vehicle with
the keys is dangerous for many
reasons. Children or others could
be badly injured or even killed.
They could operate the power
windows or other controls or
even make the vehicle move.
The windows will function and
they could be seriously injured or
killed if caught in the path of a
closing window. Do not leave
keys in a vehicle with children.
When there are children in the
rear seat use the window lockout
button to prevent unintentional
operation of the windows.
Crew Cab Shown
If the vehicle has power windows,
controls are located on each door.
The driver door has a switch for
the passenger and rear windows as
well. The power windows will work
when the ignition is in ON/RUN
or ACC/ACCESSORY, or when
Retained Accessory Power (RAP)
is active. See Retained Accessory
Power (RAP) on page 9‑40.
Push the switch down to lower the
window, and pull up the front of the
switch to raise the window.

Black plate (1,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Seat Adjustment . . . . . . . . . . . . . . 3-3
Center Seat . . . . . . . . . . . . . . . . . . . 3-3
Power Seat Adjustment . . . . . . . 3-4
Lumbar Adjustment . . . . . . . . . . . 3-6
Reclining Seatbacks . . . . . . . . . . 3-6
Heated Front Seats . . . . . . . . . . . 3-8
Rear Seats
Rear Seats (Extended CabFull Bench) . . . . . . . . . . . . . . . . . 3-10
Rear Seats (All Split Bench and Hybrid Full Bench) . . . . . 3-11
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-11
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . 3-15
Lap-Shoulder Belt . . . . . . . . . . . 3-21
Safety Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . 3-26 Lap Belt (Crew and
Extended Cab) . . . . . . . . . . . . . 3-26
Safety Belt Extender . . . . . . . . . 3-27
Safety System Check . . . . . . . . 3-27
Safety Belt Care . . . . . . . . . . . . . 3-28
Replacing Safety Belt System Parts After a Crash . . . . . . . . . 3-28
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-29
Where Are the Airbags? . . . . . 3-31
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-32
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . 3-34
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . 3-35
What Will You See After an Airbag Inflates? . . . . . . . . . . . . 3-35
Airbag On-Off Switch . . . . . . . . 3-37
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 3-40
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . 3-46
Adding Equipment to the Airbag-Equipped Vehicle . . . 3-46
Airbag System Check . . . . . . . . 3-48
Replacing Airbag System Parts After a Crash . . . . . . . . . 3-48
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-49
Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . 3-51
Child Restraint Systems . . . . . 3-54
Where to Put the Restraint . . . 3-56
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . 3-57
Replacing LATCH System Parts After a Crash . . . . . . . . . 3-66
Securing Child Restraints (Rear Seat Position) . . . . . . . . 3-66
Securing Child Restraints (Right Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-69
Securing Child Restraints (Center Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-78

Black plate (15,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-15
Q: If my vehicle has airbags, whyshould I have to wear safety
belts?
A: Airbags are supplemental
systems only; so they work
with safety belts —not instead
of them. Whether or not an
airbag is provided, all occupants
still have to buckle up to get the
most protection. That is true not
only in frontal collisions, but
especially in side and other
collisions. Q: If I am a good driver, and I
never drive far from home,
why should I wear safety
belts?
A: You may be an excellent driver,
but if you are in a crash —even
one that is not your fault —you
and your passenger(s) can be
hurt. Being a good driver does
not protect you from things
beyond your control, such
as bad drivers.
Most accidents occur within
40 km (25 miles) of home.
And the greatest number of
serious injuries and deaths
occur at speeds of less than
65 km/h (40 mph).
Safety belts are for everyone.How to Wear Safety Belts
Properly
This section is only for people of
adult size.
Be aware that there are special
things to know about safety belts
and children. And there are different
rules for smaller children and
infants. If a child will be riding in
the vehicle, see Older Children on
page 3‑49 orInfants and Young
Children on page 3‑51. Follow those
rules for everyone's protection.
It is very important for all occupants
to buckle up. Statistics show that
unbelted people are hurt more
often in crashes than those who
are wearing safety belts.
Occupants who are not buckled up
can be thrown out of the vehicle in a
crash. And they can strike others in
the vehicle who are wearing safety
belts.

Black plate (21,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-21
Lap-Shoulder Belt
If the vehicle is a regular cab,
then all seating positions in the
vehicle have a lap-shoulder belt.
If the vehicle is a crew or extended
cab, then all seating positions in
the vehicle have a lap-shoulder
belt except for the center front
passenger position (if equipped),
which has a lap belt. SeeLap Belt
(Crew and Extended Cab) on
page 3‑26 for more information.
The following instructions explain
how to wear a lap-shoulder belt
properly.
1. Adjust the seat, if the seat is adjustable, so you can sit up
straight. To see how, see “Seats”
in the Index. 2. Pick up the latch plate and pull
the belt across you. Do not let it
get twisted.
The lap-shoulder belt may lock if
you pull the belt across you very
quickly. If this happens, let the
belt go back slightly to unlock it.
Then pull the belt across you
more slowly.
If the shoulder portion of a
passenger belt is pulled out
all the way, the child restraint
locking feature may be engaged.
If this happens, let the belt go
back all the way and start again.
Engaging the child restraint
locking feature may affect the
passenger sensing system,
if equipped. See Passenger
Sensing System on page 3‑40
for more information.
If the belt stops before it reaches
the buckle, when using the
lap-shoulder belt in a rear center
seating position of a crew-cab,
tilt the latch plate and keep
pulling the safety belt until it
can be buckled.

Black plate (24,1)GMC Sierra Owner Manual - 2011
3-24 Seats and Restraints
Safety Belt Pretensioners
This vehicle has safety belt
pretensioners for front outboard
occupants. Although the safety
belt pretensioners cannot be seen,
they are part of the safety belt
assembly. They can help tighten the
safety belts during the early stages
of a moderate to severe frontal,
near frontal, or rear crash if the
threshold conditions for pretensioner
activation are met. And, if your
vehicle has side impact airbags,
safety belt pretensioners can help
tighten the safety belts in a side
crash or a rollover event.
Pretensioners work only once.
If the pretensioners activate in a
crash, they will need to be replaced,
and probably other new parts for
the vehicle's safety belt system.
SeeReplacing Safety Belt System
Parts After a Crash on page 3‑28.
Rear Safety Belt Comfort
Guides
This vehicle may have rear shoulder
belt comfort guides. If not, they
are available through your dealer.
The guides may provide added
safety belt comfort for older children
who have outgrown booster seats
and for some adults. When installed
and properly adjusted, the comfort
guide positions the belt away from
the neck and head.
Here is how to install a comfort
guide to the shoulder belt:
1. Remove the guide from its
storage clip on the interior body.
2. Place the guide over the beltand insert the two edges of the
belt into the slots of the guide.

Black plate (27,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-27
To make the belt shorter, pull its free
end as shown until the belt is snug.
If the belt is not long enough, see
Safety Belt Extender on page 3‑27.
Make sure the release button on the
buckle is positioned so you would
be able to unbuckle the safety belt
quickly if necessary.
Safety Belt Extender
If the vehicle's safety belt will fasten
around you, you should use it.
But if a safety belt is not long
enough, your dealer will order you
an extender. When you go in to
order it, take the heaviest coat you
will wear, so the extender will be
long enough for you. To help avoid
personal injury, do not let someone
else use it, and use it only for the
seat it is made to fit. The extender
has been designed for adults.
Never use it for securing child seats.
To wear it, attach it to the regular
safety belt. For more information,
see the instruction sheet that comes
with the extender.
Safety System Check
Now and then, check that the safety
belt reminder light, safety belts,
buckles, latch plates, retractors,
and anchorages are working
properly. Look for any other loose
or damaged safety belt system parts
that might keep a safety belt system
from doing its job. See your dealer
to have it repaired. Torn or frayed
safety belts may not protect you in
a crash. They can rip apart under
impact forces. If a belt is torn or
frayed, get a new one right away.
Make sure the safety belt reminder
light is working. SeeSafety Belt
Reminders on page 5‑19 for more
information.
Keep safety belts clean and dry.
See Safety Belt Care on page 3‑28.