
Black plate (8,1)GMC Sierra Owner Manual - 2011
7-8 Infotainment System
Radio Messages
Calibration Error:The audio
system has been calibrated
for the vehicle from the factory.
If Calibration Error displays, it
means that the radio has not been
configured properly for the vehicle
and it must be returned to your
dealer for service.
Locked or Loc: One of these
messages will display when the
THEFTLOCK
®system has locked
up the radio. Take the vehicle to
your dealer for service.
If any error occurs repeatedly or
if an error cannot be corrected,
contact your dealer.
Radio
AM-FM Radio
Radio Data System (RDS)
For radios with the Radio Data
System (RDS) feature, it only works
with FM stations that broadcast
RDS information. This system relies
upon receiving specific information
from these stations and only works
when the information is available.
While the radio is tuned to an
FM-RDS station, the station
name or call letters will display.
In rare cases, a radio station could
broadcast incorrect information
that causes the radio features to
work improperly. If this happens,
contact the radio station.
4(Information) (RDS Features):
For vehicles with RDS features,
press
4to display additional text
information related to the current
FM-RDS station. If information is
available, the song title information
displays on the top line of the display and artist information
displays on the bottom line.
When information is not available,
“NO INFO”
displays.
Finding a Station
BAND:Press to switch between
AM, FM, or XM™, if equipped.
f(Tune): Turn to manually select
radio stations.
©SEEK: Press to seek the
previous radio station. Press
and hold for a few seconds until
a beep sounds to scan for radio
stations in descending order; press
the
©SEEK button again to stop
scanning radio stations. The radio
only seeks and scans stations
with a strong signal that are in
the selected band.
For the AM-FM Radio, press and
hold the
©SEEK for four seconds
until a double beep sounds to scan
the preset stations. The station
frequency flashes while the radio
is in the scan mode.

Black plate (10,1)GMC Sierra Owner Manual - 2011
7-10 Infotainment System
The number of favorites pages can
be set up using the MENU button.
To set up the number of favorites
pages:
1. Press the MENU button.
2. Press the softkey located belowthe FAV 1-6 tab.
3. Select the number of favorites pages by pressing the softkey
located below the displayed
page numbers.
4. Press the FAV button, or let the menu time out, to return
to the original main radio
screen showing the radio station
frequency tabs and to begin
the process of programming
favorites.Satellite Radio
XM™ Satellite Radio Service
XM is a satellite radio service based
in the 48 contiguous United States
and 10 Canadian provinces.
XM Satellite Radio has a wide
variety of programming and
commercial-free music, coast to
coast, and in digital-quality sound.
A service fee is required to receive
the XM service. If the service
needs to be reactivated, the
radio will display “No Subscription
Please Renew on channel XM1.”
For more information, contact
XM at www.xmradio.com or
1-800-929-2100 in the U.S.,
and www.xmradio.ca or
1-877-438-9677 in Canada.
4(Information) (XM Satellite Radio
Service): For vehicles with XM,
press
4to display additional text
information related to the current
XM channel. If information is
available, the song title information
displays on the top line of the
display and artist information
displays on the bottom line.
When information is not available,
“NO INFO” displays.
Finding a Channel
BAND:Press to switch between
AM, FM, or XM™, if equipped.
f(Tune): Turn to manually select
an XM channel.
©SEEK: Press to go to the
previous XM channel.
¨SEEK: Press to go to the next
XM channel.

Black plate (12,1)GMC Sierra Owner Manual - 2011
7-12 Infotainment System
Storing XM Channels
Drivers are encouraged to store
XM channels while the vehicle is
parked; seeDefensive Driving on
page 9‑2. Tune to stored radio
stations using the presets, favorites
button, and steering wheel controls,
if the vehicle has this feature.
Up to 36 stations can be
programmed as favorites using
the six softkeys below the radio
station frequency tabs and by
using the FAV button. Press the
FAV button to go through up to six
pages of favorites, each having six
favorite stations available per page.
Each page of favorites can contain
any combination of AM, FM, or XM,
if equipped, stations.
Storing an XM Channel as a
Favorite
To store a station as a favorite:
1. Tune to an XM channel.
2. Press the FAV button to display the page where the station will
be stored. 3. Press and hold one of the six
softkeys until a beep sounds.
4. Repeat Steps 1 through 3 to store additional radio stations.
The number of favorites pages can
be set up using the MENU button.
To set up the number of favorites
pages:
1. Press the MENU button.
2. Press the softkey located below the FAV 1-6 tab.
3. Select the number of favorites pages by pressing the softkey
located below the displayed
page numbers.
4. Press the FAV button, or let the menu time out, to return to
the original main radio screen
showing the radio station
frequency tabs and to begin
the process of programming
favorites.
XM Radio Messages
XL (Explicit Language
Channels): These channels,
or any others, can be blocked at
a customer's request, by calling
1-800-929-2100 in the U.S. and
1-877-438-9677 in Canada.
XM Updating: The encryption
code in the receiver is being
updated, and no action is required.
This process should take no longer
than 30 seconds.
No XM Signal: The system is
functioning correctly, but the vehicle
is in a location that is blocking the
XM signal. When the vehicle is
moved into an open area, the
signal should return.
Loading XM: The audio system is
acquiring and processing audio and
text data. No action is needed. This
message should disappear shortly.
Channel Off Air: This channel is
not currently in service. Tune in to
another channel.

Black plate (13,1)GMC Sierra Owner Manual - 2011
Infotainment System 7-13
Channel Unauth:This channel is
blocked or cannot be received with
your XM subscription package.
Channel Unavail: This previously
assigned channel is no longer
assigned. Tune to another station.
If this station was one of the
presets, choose another station
for that preset button.
No Artist Info: No artist
information is available at this
time on this channel. The system
is working properly.
No Title Info: No song title
information is available at this
time on this channel. The system
is working properly.
No CAT Info: No category
information is available at this time
on this channel. The system is
working properly. No Information:
No text or
informational messages are
available at this time on this
channel. The system is working
properly.
No Subscription Please Renew:
The XM subscription needs to
be reactivated. Contact XM
at www.xmradio.com or call
1-800-929-2100.
CAT Not Found: There are no
channels available for the selected
category. The system is working
properly.
XM Theftlocked: The XM receiver
in the vehicle could have previously
been in another vehicle. For security
purposes, XM receivers cannot be
swapped between vehicles. If this
message is received after having
the vehicle serviced, check with
your dealer. XM Radio ID:
If tuned to channel 0,
this message alternates with the
XM Radio eight‐digit radio ID label.
This label is needed to activate the
service.
Unknown: If this message is
received when tuned to channel 0,
there could be a receiver fault.
Consult with your dealer.
Check Antenna: If this message
does not clear within a short period
of time, the receiver or antenna
could have a fault. Consult with
your dealer.
Check XM Receivr: If this
message does not clear within a
short period of time, the receiver
could have a fault. Consult with
your dealer.
XM Not Available: If this message
does not clear within a short period
of time, the receiver could have a
fault. Consult with your dealer.

Black plate (14,1)GMC Sierra Owner Manual - 2011
7-14 Infotainment System
Radio Reception
Frequency interference and
static can occur during normal
radio reception if items such
as cell phone chargers, vehicle
convenience accessories, and
external electronic devices are
plugged into the accessory power
outlet. If there is interference or
static, unplug the item from the
accessory power outlet.
AM
The range for most AM stations is
greater than for FM, especially at
night. The longer range can cause
station frequencies to interfere
with each other. For better radio
reception, most AM radio stations
boost the power levels during the
day, and then reduce these levels
during the night. Static can also
occur when things like storms and
power lines interfere with radio
reception. When this happens, try
reducing the treble on the radio.
FM Stereo
FM signals only reach about
16 to 65 km (10 to 40 miles).
Although the radio has a built-in
electronic circuit that automatically
works to reduce interference, some
static can occur, especially around
tall buildings or hills, causing the
sound to fade in and out.
XM™Satellite Radio Service
XM Satellite Radio Service gives
digital radio reception from coast
to coast in the 48 contiguous
United States, and in Canada.
Just as with FM, tall buildings or
hills can interfere with satellite radio
signals, causing the sound to fade
in and out. In addition, traveling
or standing under heavy foliage,
bridges, garages, or tunnels may
cause loss of the XM signal for a
period of time.
Cellular Phone Usage
Cellular phone usage may cause
interference with the vehicle's
radio. This interference may occur
when making or receiving phone
calls, charging the phone's battery,
or simply having the phone on.
This interference causes an
increased level of static while
listening to the radio. If static is
received while listening to the
radio, unplug the cellular phone
and turn it off.

Black plate (54,1)GMC Sierra Owner Manual - 2011
7-54 Infotainment System
Using the“Dial”or“Call”
Command
1. Press and hold
b gfor
two seconds.
2. Say “Dial”or“Call.”
3. Say the entire number without pausing, or say the name tag.
Once connected, the person called
will be heard through the audio
speakers.
Using the “Digit Dial” Command
The digit dial command allows a
phone number to be dialed by
entering the digits one at a time.
After each digit is entered, the
system repeats back the digit it
heard followed by a tone.
If an unwanted number is
recognized by the system, say
“Clear” at any time to clear the
last number. To hear all of the numbers
recognized by the system, say
“Verify”
at any time.
1. Press and hold
b gfor
two seconds.
2. Say “Digit Dial.”
3. Say each digit, one at a time, that you want to dial. After each
digit is entered, the system
repeats back the digit it heard
followed by a tone. After the
last digit has been entered,
say “Dial.”
Once connected, the person called
will be heard through the audio
speakers.
Using the “Re‐dial”Command
1. Press and hold
b gfor
two seconds.
2. After the tone, say “Re‐dial.”
Once connected, the person called
will be heard through the audio
speakers.
Receiving a Call
When an incoming call is received,
the audio system mutes and a ring
tone is heard in the vehicle.
.Pressb gto answer the call.
.Pressc xto ignore a call.
Call Waiting
Call waiting must be supported on
the cell phone and enabled by the
wireless service carrier.
.Pressbgto answer an
incoming call when another call
is active. The original call is
placed on hold.
.Pressb gagain to return to the
original call.
.To ignore the incoming call, no
action is required.
.Pressc xto disconnect the
current call and switch to the call
on hold.

Black plate (55,1)GMC Sierra Owner Manual - 2011
Infotainment System 7-55
Three‐Way Calling
Three‐way calling must be
supported on the cell phone and
enabled by the wireless service
carrier.
1. While on a call, press
bg.
2. Say “Three‐way call.”
3. Use the dial or call command to dial the number of the third party
to be called.
4. Once the call is connected, press
bgto link all callers
together.
Ending a Call
Pressc xto end a call.
Muting a Call
During a call, all sounds from inside
the vehicle can be muted so that the
person on the other end of the call
cannot hear them.
.To mute a call, pressbg, and
then say “Mute call.”
.To cancel mute, pressbg, and
then say “Un‐mute call.”
Transferring a Call
Audio can be transferred between
the Bluetooth system and the cell
phone.
The cell phone must be paired
and connected with the Bluetooth
system before a call can be
transferred. The connection process
can take up to two minutes after the
ignition is turned to ON/RUN. Transferring Audio from the
Bluetooth System to a Cell Phone
During a call with the audio in the
vehicle:
1. Press
b
g.
2. Say “Transfer Call.”
Transferring Audio to the
Bluetooth System from a Cell
Phone
During a call with the audio on the
cell phone, press
b g. The audio
transfers to the vehicle. If the audio
does not transfer to the vehicle, use
the audio transfer feature on the
cell phone. See your cell phone
manufacturer's user guide for more
information.

Black plate (7,1)GMC Sierra Owner Manual - 2011
Driving and Operating 9-7
Off-Road Driving
Vehicles with four-wheel drive
can be used for off-road driving.
Vehicles without four-wheel drive
and vehicles with 20‐inch tire/wheel
assemblies should not be driven
off-road except on a level, solid
surface.
The airbag system is designed to
work properly under a wide range
of conditions, including off‐road
usage. Always wear your safety belt
and observe safe driving speeds,
especially on rough terrain.
Drinking and driving can be very
dangerous on any road and this is
certainly true for off-road driving.
At the very time you need special
alertness and driving skills, your
reflexes, perceptions, and judgment
can be affected by even a small
amount of alcohol. You could have aserious
—or even fatal —accident
if you drink and drive or ride with a
driver who has been drinking.
Off-roading can be great fun but has
some definite hazards. The greatest
of these is the terrain itself. When
off-road driving, traffic lanes are not
marked, curves are not banked, and
there are no road signs. Surfaces
can be slippery, rough, uphill,
or downhill.
Avoid sharp turns and abrupt
maneuvers. Failure to operate the
vehicle correctly off‐road could
result in loss of vehicle control
or vehicle rollover.
Off-roading involves some new
skills. That is why it is very
important that you read these
driving tips and suggestions to
help make off-road driving safer
and more enjoyable.
Before You Go Off-Roading
.Have all necessary maintenance
and service work done.
.Make sure there is enough fuel,
that fluid levels are where they
should be, and that the spare
tire is fully inflated.
.Be sure to read all
the information about
four-wheel-drive vehicles
in this manual.
.Make sure all underbody
shields, if the vehicle has them,
are properly attached.
.Know the local laws that apply
to off-roading where you will
be driving or check with law
enforcement people in the area.
.Be sure to get the necessary
permission if you will be on
private land.