
Black plate (3,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Introduction iii
The names, logos, emblems,
slogans, vehicle model names, and
vehicle body designs appearing in
this manual including, but not limited
to, GM, the GM logo, GMC, the
GMC Truck Emblem, and SIERRA
are trademarks and/or service
marks of General Motors LLC, its
subsidiaries, affiliates, or licensors.
This manual describes features that
may or may not be on your specific
vehicle either because they are
options that you did not purchase
or due to changes subsequent to
the printing of this owner manual.Please refer to the purchase
documentation relating to your
specific vehicle to confirm each of
the features found on your vehicle.
For vehicles first sold in Canada,
substitute the name
“General
Motors of Canada Limited” for GMC
Division wherever it appears in this
manual.
If the vehicle has the Duramax
®
diesel engine, see the Duramax
diesel supplement for additional and
specific information on this engine.
If the vehicle is a hybrid, see
the hybrid supplement for more
information.
Keep this manual in the vehicle for
quick reference.
Canadian Vehicle Owners
Propriétaires Canadiens
A French language copy of this
manual can be obtained from your
dealer or from:
On peut obtenir un exemplaire de
ce guide en français auprès du
concessionnaire ou à l'adresse
suivante:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Litho in U.S.A.
Part No. 20902916 B Second Printing©2011 General Motors LLC. All Rights Reserved.

Black plate (36,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-36 Instruments and Controls
The trip odometer can be reset to
zero by pressing and holding the trip
odometer reset stem while the trip
odometer is displayed.
The trip odometer has a feature
called the retro-active reset. This
can be used to set the trip odometer
to the number of miles (kilometers)
driven since the ignition was last
turned on. This can be used if the
trip odometer is not reset at the
beginning of the trip.
To use the retro-active reset feature,
press and hold the trip odometer
reset stem for at least four seconds.
The trip odometer will display the
number of kilometers (km) or
miles (mi) driven since the ignition
was last turned on and the vehicle
was moving. Once the vehicle
begins moving, the trip odometer
will accumulate mileage. For
example, if the vehicle was driven8 km (5 miles) before it is started
again, and then the retro-active
reset feature is activated, the
display will show 8 km (5 miles).
As the vehicle begins moving, the
display will then increase to 8.2 km
(5.1 miles), 8.4 km (5.2 miles), etc.
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 selections
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 the
choice.
Engine Hours
To display the ENGINE HOURS,
place the ignition in LOCK/OFF or
ACC/ACCESSORY, then press and
hold the trip odometer reset stem
for four seconds while viewing the
ODOMETER. This display shows
the total number of hours the engine
has run.

Black plate (37,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-37
Trip Odometer Reset Stem
Menu Items (without DIC
Buttons)
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 resetstem 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 the
choice.
Trip Odometer
Press the trip odometer reset stem
until TRIP displays. This display
shows the current distance
traveled in either kilometers (km) or
miles (mi) since the last reset for the
trip odometer.
The trip odometer can be reset to
zero by pressing and holding the trip
odometer reset stem while the trip
odometer is displayed.
The trip odometer has a feature
called the retro-active reset. This
can be used to set the trip odometer
to the number of miles (kilometers)
driven since the ignition was last
turned on. This can be used if the
trip odometer is not reset at the
beginning of the trip. To use the retro-active reset feature,
press and hold the trip odometer
reset stem for at least four seconds.
The trip odometer will display the
number of kilometers (km) or
miles (mi) driven since the ignition
was last turned on and the vehicle
was moving. Once the vehicle
begins moving, the trip odometer
will accumulate mileage. For
example, if the vehicle was driven
8 km (5 miles) before it is started
again, and then the retro-active
reset feature is activated, the
display will show 8 km (5 miles). As
the vehicle begins moving, the
display will then increase to 8.2 km
(5.1 miles), 8.4 km (5.2 miles), etc.
Transmission Temperature
Press the trip odometer reset stem
until TRANS TEMP displays. This
display shows the temperature of
the automatic transmission fluid in
either degrees Celsius (°C) or
degrees Fahrenheit (°F) .

Black plate (48,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
5-48 Instruments and Controls
This message clears itself after
several seconds. This message also
clears if you acknowledge it. After
this message clears, the TRAILER
GAIN/OUTPUT display appears in
the DIC.
See“TRAILER GAIN/OUTPUT”
under Driver Information Center
(DIC) on page 5‑30 and“Integrated
Trailer Brake Control System” under
Towing Equipment on page 9‑94 for
more information.
Washer Fluid Messages
WASHER FLUID LOW ADD
FLUID
This message displays when the
windshield washer fluid is low. Fill
the windshield washer fluid reservoir
as soon as possible. See Engine
Compartment Overview on
page 10‑6 for the location of the
windshield washer fluid reservoir.
Also, see Washer Fluid on
page 10‑26 for more information.
Vehicle
Personalization
Vehicle Personalization
(With DIC Buttons)
The vehicle may have customization
capabilities that allow you to
program certain features to one
preferred setting. Customization
features can only be programmed
to one setting on the vehicle and
cannot be programmed to a
preferred setting for two different
drivers.
All of the customization options may
not be available on the vehicle.
Only the options available will be
displayed on the DIC.
The default settings for the
customization features were set
when the vehicle left the factory, but
may have been changed from their
default state since then.
The customization preferences are
automatically recalled. 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, turn the headlamps off.
2. Press the customization button to scroll through the available
customizable options.
Feature Settings Menu Items
The following customization features
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.

Black plate (49,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-49
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
Driver Information Center (DIC) on
page 5‑30 for more information.
AUTO DOOR LOCK
This feature allows you to select
when the vehicle's doors will
automatically lock. See Automatic
Door Locks on page 2‑8 for more
information.
Press the customization button until
AUTO DOOR LOCK 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:
SHIFT OUT OF PARK (default):
The doors will automatically lock
when the vehicle is shifted out of
P (Park).
AT VEHICLE SPEED:
The doors
will automatically lock when the
vehicle speed is above 13 km/h
(8 mph) for three seconds.
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.
AUTO DOOR UNLOCK
This feature allows you to turn off
the automatic door unlocking
feature. It also allows you to select
which doors and when the doors will
automatically unlock. See Automatic
Door Locks on page 2‑8 for more
information.

Black plate (40,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
7-40 Infotainment System
See“Using the Auxiliary Input
Jack” under Auxiliary Devices on
page 7‑32 for more information
about changing the source.
Changing 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:
1. Press the
z(display menu)
button on the remote control.
2. Use the remote control
n,q,
p,o(navigation) arrows and
the
r(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 RSA 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. See Rear Seat Audio
(RSA) System on page 7‑46 for
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.
Video Screen
The video screen is located in the
overhead console.
To use the video screen:
1. Push the release button located
on the overhead console.
2. Move the screen to the desired position.
When the video screen is not in
use, push it up into its locked
position.