Page 3 of 602

GENERAL MOTORS, GM, the GM Emblem, GMC,
the GMC Truck Emblem, and the name SIERRA are
registered trademarks of General Motors Corporation.
This manual includes the latest information at the time it
was printed. GM reserves the right to make changes after
that time without further notice. For vehicles  rst sold in
Canada, substitute the name “General Motors of Canada
Limited” for GMC wherever it appears in this manual.
This manual describes features that may or may not be
on your speci c vehicle.
Read this manual from beginning to end to learn about
the vehicle’s features and controls. Pictures, symbols,
and words work together to explain vehicle operation.
If the vehicle has the DURAMAX
®Diesel engine, refer to
the DURAMAX®Diesel supplement for additional and
speci c information on this engine.
Keep this manual in the vehicle for quick reference.
Canadian Owners
Canadian Owners
(Propriétaires Canadiens)
A French language copy of this manual can be obtained
from your dealer/retailer or from:
On peut obtenir un exemplaire de ce guide en français
auprès du concessionnaire ou à l’adresse suivante:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
Numéro de poste 6438 de langue française
www.helminc.com
Index
To quickly locate information about the vehicle, use the
index in the back of the manual. It is an alphabetical
list of what is in the manual and the page number where
it can be found.
Litho in U.S.A.
Part No. 15911381 B Second Printing
©2008 General Motors Corporation. All Rights Reserved.
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        Page 247 of 602

Language
This display allows you to select the language in which
the DIC messages will appear. To select a language:
1. Press the trip odometer reset stem until
ODOMETER displays.
2. While in the ODOMETER display, press and hold
the trip odometer reset stem for three seconds until
the currently set language displays.
3. Continue to press and hold the trip odometer reset
stem to scroll through all of the available languages.
The available languages are ENGLISH (default),
FRANCAIS (French), ESPANOL (Spanish), and
NO CHANGE.
4. Once the desired language is displayed, release
the trip odometer reset stem to set your choice.
DIC Compass
Your vehicle may have a compass in the Driver
Information Center (DIC).
Compass Zone
The zone is set to zone eight upon leaving the factory.
Your dealer/retailer will set the correct zone for your
location.
Under certain circumstances, such as during a long
distance cross-country trip or moving to a new state or
province, it will be necessary to compensate for compass
variance by resetting the zone through the DIC if the zone
is not set correctly.
Compass variance is the difference between the earth’s
magnetic north and true geographic north. If the compass
is not set to the zone where you live, the compass may
give false readings. The compass must be set to the
variance zone in which the vehicle is traveling.
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        Page 260 of 602

To change customization preferences, use the following
procedure.
Entering the Feature Settings Menu
1. Turn the ignition on and place the vehicle in
P (Park).
To avoid excessive drain on the battery, it is
recommended that the headlamps are turned off.
2. Press the customization button to scroll through the
available customizable options.
Feature Settings Menu Items
The following are customization features that allow you
to program settings to the vehicle:
DISPLAY IN ENGLISH
This feature will only display if a language other than
English has been set. This feature allows you to change
the language in which the DIC messages appear to
English.
Press the customization button until the PRESS
VTO
DISPLAY IN ENGLISH screen appears on the DIC
display. Press the set/reset button once to display all
DIC messages in English.
DISPLAY LANGUAGE
This feature allows you to select the language in which
the DIC messages will appear.
Press the customization button until the DISPLAY
LANGUAGE screen appears on the DIC display. Press
the set/reset button once to access the settings for this
feature. Then press the customization button to scroll
through the following settings:
ENGLISH (default):All messages will appear in
English.
FRANCAIS:All messages will appear in French.
ESPANOL:All messages will appear in Spanish.
NO CHANGE:No change will be made to this feature.
The current setting will remain.
To select a setting, press the set/reset button while the
desired setting is displayed on the DIC.
You can also change the language by pressing the trip
odometer reset stem. See “Language” under DIC
Operation and Displays (Without DIC Buttons) earlier in
this section for more information.
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        Page 316 of 602

To use the auxiliary inputs of the RSE system, connect an
external auxiliary device to the color-coded A/V jacks and
turn both the auxiliary device and the video screen power
on. If the video screen is in the DVD player mode,
pressing the AUX (auxiliary) button on the remote control
switches the video screen from the DVD player mode to
the auxiliary device. The radio can listen to the audio of
the connected auxiliary device by sourcing to auxiliary.
SeeRadio(s) on page 3-87for more information.
How to Change the RSE Video Screen
Settings
The screen display mode (normal, full, and zoom), screen
brightness, and setup menu language can be changed
from the on screen setup menu. To change any feature,
do the following:
1. Press the
z(display) menu button on the remote
control.
2. Use the remote control menu
n,q,p,o
(navigation) arrows and ther(enter) button
to use the setup menu.
3. Press the
zbutton again to remove the setup
menu from the screen.
Audio Output
Audio from the DVD player or auxiliary inputs can be
heard through the following possible sources:
Wireless Headphones
Vehicle Speakers
Vehicle wired headphone jacks on the rear seat
audio system, if the vehicle has this feature.
The RSE system always transmits the audio signal to the
wireless headphones, if there is audio available. See
“Headphones” earlier in this section for more information.
The DVD player is capable of outputting audio to the
wired headphone jacks on the RSA system, if the vehicle
has this feature. The DVD player can be selected as an
audio source on the RSA system. SeeRear Seat Audio
(RSA) on page 3-138for more information.
When a device is connected to the A/V jacks, or the
radio’s auxiliary input jack, if the vehicle has this
feature, the rear seat passengers are able to hear audio
from the auxiliary device through the wireless or wired
headphones. The front seat passengers are able to listen
to playback from this device through the vehicle speakers
by selecting AUX as the source on the radio.
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