2011 GMC SIERRA light

Black plate (44,1)GMC Sierra Owner Manual - 2011
3-44 Seats and Restraints
5. If, after reinstalling the childrestraint and restarting the
vehicle, the on indicator is
still lit, turn the vehicle off.
Then slightly recline the vehicle
seatback and adjust the seat
cushion, if adjustable, to make
sure that the vehicle seatback is
not pushing the child restraint
into the seat cushion.
Also make sure the child
restraint is not trapped under
the vehicle head restraint.
If this happens, adjust the
head restraint. See Head
Restraints on page 3‑2.
6. Restart the vehicle.
The passenger sensing system
may or may not turn off the
airbag for a child in a child
restraint depending upon the
child’s seating posture and
body build. It is better to secure
the child restraint in a rear seat.If the Off Indicator is Lit for an
Adult-Size Occupant
If a person of adult-size is sitting
in the right front passenger seat,
but the off indicator is lit, it could be
because that person is not sitting
properly in the seat. If this happens, use the following steps to allow the
system to detect that person and
enable the right front passenger
frontal airbag:
1. Turn the vehicle off.
2. Remove any additional material
from the seat, such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
3. Place the seatback in the fully upright position.
4. Have the person sit upright in the seat, centered on the seat
cushion, with legs comfortably
extended.
5. Restart the vehicle and have the person remain in this position for
two to three minutes after the on
indicator is lit.

Black plate (48,1)GMC Sierra Owner Manual - 2011
3-48 Seats and Restraints
Q: Because I have a disability,I have to get my vehicle
modified. How can I find out
whether this will affect my
airbag system?
A: If you have questions,
call Customer Assistance.
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 orCustomer
Satisfaction Procedure (Mexico)
on page 13‑3.
In addition, your dealer and the
service manual have information
about the location of the airbag
sensors, sensing and diagnostic
module and airbag wiring.Airbag System Check
The airbag system does not need
regularly scheduled maintenance
or replacement. Make sure the
airbag readiness light is working.
See Airbag Readiness Light on
page 5‑20 for more information.
Notice: If an airbag covering is
damaged, opened, or broken,
the airbag may not work properly.
Do not open or break the airbag
coverings. If there are any
opened or broken airbag
covers, have the airbag covering
and/or airbag module replaced.
For the location of the airbag
modules, see What Makes an
Airbag Inflate? on page 3‑34.
See your dealer for service.
Replacing Airbag System
Parts After a Crash
{WARNING
A crash can damage the
airbag systems in the vehicle.
A damaged airbag system
may not work properly and
may not protect you and your
passenger(s) in a crash, resulting
in serious injury or even death.
To help make sure the airbag
systems are working properly
after a crash, have them
inspected and any necessary
replacements made as soon
as possible.

Black plate (49,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-49
If an airbag inflates, you will need
to replace airbag system parts.
See your dealer for service.
If the airbag readiness light stays on
after the vehicle is started or comes
on when you are driving, the airbag
system may not work properly.
Have the vehicle serviced right
away. SeeAirbag Readiness Light
on page 5‑20 for more information.Child Restraints
Older Children
Older children who have outgrown
booster seats should wear the
vehicle safety belts. The manufacturer's instructions that
come with the booster seat state the
weight and height limitations for that
booster. Use a booster seat with
a lap-shoulder belt until the child
passes the fit test below:
.Sit all the way back on the seat.
Do the knees bend at the seat
edge? If yes, continue. If no,
return to the booster seat.
.Buckle the lap-shoulder belt.
Does the shoulder belt rest on
the shoulder? If yes, continue.
If no, try using the rear safety
belt comfort guide. See
“Rear
Safety Belt Comfort Guides”
under Lap-Shoulder Belt on
page 3‑21 for more information.
If the shoulder belt still does not
rest on the shoulder, then return
to the booster seat.

Black plate (70,1)GMC Sierra Owner Manual - 2011
3-70 Seats and Restraints
If the child restraint has the
LATCH system, seeLower Anchors
and Tethers for Children (LATCH
System) on page 3‑57 for how and
where to install the child restraint
using LATCH. If you secure a child
restraint using a safety belt and
it uses a top tether, see Lower
Anchors and Tethers for Children
(LATCH System) on page 3‑57
for top tether anchor locations.
Do not secure a child seat in a
position without a top tether anchor
if a national or local law requires
that the top tether be anchored, or if
the instructions that come with the
child restraint say that the top strap
must be anchored.
In Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether be
attached. You will be using the lap-shoulder
belt to secure the child restraint in
this position. Follow the instructions
that came with the child restraint.
1. Move the seat as far back as
it will go before securing the
forward-facing child restraint.
When the passenger sensing
system, if equipped, has turned
off the right front passenger
frontal airbag, the off indicator
in the passenger airbag status
indicator should light and stay
lit when you start the vehicle.
See Passenger Airbag Status
Indicator on page 5‑23.
2. Put the child restraint on the seat.
3. Pick up the latch plate, and run the lap and shoulder portions of
the vehicle's safety belt through
or around the restraint. The child
restraint instructions will show
you how.
4. Push the latch plate into the
buckle until it clicks.
Position the release button so
that the safety belt could be
quickly unbuckled if necessary.

Black plate (72,1)GMC Sierra Owner Manual - 2011
3-72 Seats and Restraints
If the vehicle is equipped with
a passenger sensing system,
and when the passenger sensing
system has turned off the right front
passenger frontal airbag, the off
indicator in the passenger airbag
status indicator should light and
stay lit when you start the vehicle.
If a child restraint has been installed
and the on indicator is lit, see
“If the On Indicator is Lit for a Child
Restraint”underPassenger Sensing
System on page 3‑40 for more
information.
To remove the child restraint,
unbuckle the vehicle safety belt and
let it return to the stowed position.
If the top tether is attached to a
top tether anchor, disconnect it.With Airbag Off Switch
This vehicle has airbags. A rear
seat is a safer place to secure
a forward-facing child restraint.
See Where to Put the Restraint on
page 3‑56.
There may be a switch in the glove
box that you can use to turn off the
right front passenger frontal airbag.
See Airbag On-Off Switch on
page 3‑37 for more information,
including important safety
information.
A label on the sun visor says,
“Never put a rear-facing child seat
in the front unless airbag is off.” This
is because the risk to the rear-facing
child is so great, if the airbag
deploys.{WARNING
A child in a rear-facing child
restraint can be seriously
injured or killed if the right
front passenger airbag inflates.
This is because the back of the
rear-facing child restraint would
be very close to the inflating
airbag. A child in a forward-facing
child restraint can be seriously
injured or killed if the right front
passenger airbag inflates and the
passenger seat is in a forward
position.
(Continued)

Black plate (73,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-73
WARNING (Continued)
Even if the airbag switch
has turned off the right front
passenger frontal airbag, no
system is fail-safe. No one can
guarantee that an airbag will not
deploy under some unusual
circumstance, even though it is
turned off.
Secure rear-facing child
restraints in a rear seat, even if
the airbag is off. If you secure a
forward-facing child restraint in
the right front seat, always move
the front passenger seat as far
back as it will go. It is better to
secure the child restraint in a
rear seat.
{WARNING
If the airbag readiness light
ever comes on and stays on, it
means that something may be
wrong with the airbag system.
For example, the right front
passenger airbag could inflate
even though the airbag on-off
switch is turned off.
To help avoid injury to yourself or
others, have the vehicle serviced
right away. SeeAirbag Readiness
Light on page 5‑20 for more
information, including important
safety information.
If the vehicle does not have
a rear seat that will accommodate
a rear-facing child restraint, a
rear-facing child restraint should not
be installed in the vehicle, even if
the airbag is off. If the child restraint has the LATCH
system, see
Lower Anchors and
Tethers for Children (LATCH
System) on page 3‑57 for how and
where to install the child restraint
using LATCH. If a child restraint is
secured using a safety belt and
it uses a top tether, see Lower
Anchors and Tethers for Children
(LATCH System) on page 3‑57
for top tether anchor locations.
Do not secure a child restraint in a
position without a top tether anchor
if a national or local law requires
that the top tether be anchored, or if
the instructions that come with the
child restraint say that the top strap
must be anchored.
In Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether be
attached.

Black plate (74,1)GMC Sierra Owner Manual - 2011
3-74 Seats and Restraints
You will be using the lap-shoulder
belt to secure the child restraint in
this position. Follow the instructions
that came with the child restraint.
1. Move the seat as far back asit will go before securing the
forward-facing child restraint.
If you have no other choice
but to install a rear-facing child
restraint in this seat, make sure
the airbag is off once the child
restraint has been installed.
When the airbag off switch
has turned off the right front
passenger frontal airbag, the off
indicator in the airbag off light
should light and stay lit when
you start the vehicle. See Airbag
On-Off Light on page 5‑21.
2. Put the child restraint on the seat. 3. Pick up the latch plate, and run
the lap and shoulder portions of
the vehicle's safety belt through
or around the restraint. The child
restraint instructions will show
you how.
4. Push the latch plate into thebuckle until it clicks.
Position the release button so
that the safety belt could be
quickly unbuckled if necessary.
5. Pull the shoulder belt all the way
out of the retractor to set the
lock. When the retractor lock is
set, the belt can be tightened but
not pulled out of the retractor.

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