2012 GMC SIERRA 1500 park assist

Black plate (1,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
In Brief 1-1
In Brief
Instrument Panel
Instrument Panel (Base/UplevelVersion) . . . . . . . . . . . . . . . . . . . . . 1-2
Instrument Panel (Premium Version) . . . . . . . . . . . . . . . . . . . . . 1-6
Initial Drive Information
Initial Drive Information . . . . . . . . 1-8
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 1-8
Remote Vehicle Start . . . . . . . . . 1-9
Door Locks . . . . . . . . . . . . . . . . . . . 1-9
Windows . . . . . . . . . . . . . . . . . . . . . 1-10
Seat Adjustment . . . . . . . . . . . . . 1-11
Memory Features . . . . . . . . . . . . 1-14
Heated and Ventilated Seats . . . . . . . . . . . . . . . . . . . . . . . 1-15
Head Restraint Adjustment . . . . . . . . . . . . . . . . . 1-15 Safety Belts . . . . . . . . . . . . . . . . . . 1-16
Passenger Sensing
System . . . . . . . . . . . . . . . . . . . . . 1-16
Mirror Adjustment . . . . . . . . . . . . 1-16
Steering Wheel Adjustment . . . . . . . . . . . . . . . . . 1-19
Throttle and Brake Pedal Adjustment . . . . . . . . . . . . . . . . . 1-19
Interior Lighting . . . . . . . . . . . . . . 1-20
Exterior Lighting . . . . . . . . . . . . . 1-21
Windshield Wiper/Washer . . . . 1-21
Climate Controls . . . . . . . . . . . . . 1-22
Transmission . . . . . . . . . . . . . . . . 1-24
Four-Wheel Drive . . . . . . . . . . . . 1-25
Vehicle Features
Radio(s) . . . . . . . . . . . . . . . . . . . . . 1-27
Satellite Radio . . . . . . . . . . . . . . . 1-28
Portable Audio Devices . . . . . . 1-28
Bluetooth
®. . . . . . . . . . . . . . . . . . . 1-29
Steering Wheel Controls . . . . . 1-29
Cruise Control . . . . . . . . . . . . . . . 1-30 Navigation System . . . . . . . . . . . 1-30
Driver Information
Center (DIC) . . . . . . . . . . . . . . . 1-30
Rear Vision Camera (RVC) . . . . . . . . . . . . . 1-31
Ultrasonic Parking Assist . . . . 1-31
Power Outlets . . . . . . . . . . . . . . . 1-32
Universal Remote System . . . 1-32
Sunroof . . . . . . . . . . . . . . . . . . . . . . 1-33
Performance and Maintenance
StabiliTrak®System . . . . . . . . . 1-35
Tire Pressure Monitor . . . . . . . . 1-35
Engine Oil Life System . . . . . . 1-35
Fuel E85 (85% Ethanol) . . . . . 1-36
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-36
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 1-36
OnStar
®. . . . . . . . . . . . . . . . . . . . . 1-37

Black plate (4,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-4 In Brief
U.StabiliTrak®System on
page 9‑55 (If Equipped).
Ultrasonic Parking Assist on
page 9‑61 (If Equipped).
Pedal Adjust Button
(If Equipped). See Adjustable
Throttle and Brake Pedal on
page 9‑25.
Exhaust Brake (If Equipped).
See “Brakes” in the Duramax
diesel supplement. V.
Power Outlets on page 5‑9.
W. Climate Control Systems (with
Air Conditioning) on page 8‑1 or
Climate Control Systems (with
Heater Only) on page 8‑4
(If Equipped).
Dual Automatic Climate Control
System on page 8‑5
(If Equipped). X. Power Take Off (PTO) Control
(If Equipped). See Power Take
Off (PTO) in the Duramax diesel
supplement.
Y. Passenger Airbag Off Control (If Equipped). See Airbag
On-Off Switch on page 3‑29.

Black plate (8,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-8 In Brief
V.StabiliTrak®System on
page 9‑55 (If Equipped).
Pedal Adjust Button (If
Equipped). See Adjustable
Throttle and Brake Pedal on
page 9‑25.
Ultrasonic Parking Assist on
page 9‑61 (If Equipped).
Exhaust Brake (If Equipped).
See “Brakes” in the Duramax
diesel supplement.
W. Passenger Airbag Off Control (If Equipped). See Airbag On-Off
Switch on page 3‑29.Initial Drive
Information
This section provides a brief
overview about some of the
important features that may or may
not be on your specific vehicle.
For more detailed information, refer
to each of the features which can be
found later in this owner manual.
Remote Keyless Entry
(RKE) System
The RKE transmitter is used to
remotely lock and unlock the doors
from up to 60 m (195 ft) away from
the vehicle.
K: Press to unlock the driver door.
Press
Kagain within three seconds
to unlock all remaining doors.
Q: Press to lock all doors. Lock
and unlock feedback can be
personalized. See Vehicle
Personalization (With DIC Buttons)
on page 5‑48.
L: Press and release to locate
the vehicle. Press
Land hold for
more than two seconds to sound the
panic alarm. Press
Lagain to
cancel the panic alarm.

Black plate (31,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
In Brief 1-31
3:Press to display the
odometer, trip odometer, fuel range,
average economy, fuel used, timer,
instantaneous economy and Active
Fuel Management™ indicator,
and transmission temperature.
The compass and outside air
temperature will also be shown in
the display. The temperature will be
shown in °C or °F depending on the
units selected.
T: Press to display the oil life,
units, tire pressure readings for
vehicles with the Tire Pressure
Monitor System (TPMS), trailer
brake gain and output information
for vehicles with the Integrated
Trailer Brake Control (ITBC) system,
engine hours, compass zone
setting, and compass recalibration.
U: Press to customize the feature
settings on your vehicle. See
Vehicle Personalization (With DIC
Buttons) on page 5‑48 for more
information.
V: Press to set or reset certain
functions and to turn off or
acknowledge messages on the DIC.
For more information, see Driver
Information Center (DIC) on
page 5‑30.
Vehicle Customization
Some vehicle features can be
programmed by using the DIC
buttons next to the steering wheel.
These features include:
.Language
.Door Lock and Unlock Settings
.RKE Lock and Unlock Feedback
.Lighting
.Chime Volume
.Memory Features
See Vehicle Personalization (With
DIC Buttons) on page 5‑48.
Rear Vision
Camera (RVC)
If available, the RVC displays a
view of the area behind the vehicle
when the vehicle is shifted into
R (Reverse). This is displayed on
the inside rearview mirror or the
navigation screen, if equipped.
To clean the camera lens, located
in the bezel of the tailgate handle,
rinse it with water and wipe it with a
soft cloth.
For more information, see Rear
Vision Camera (RVC) on page 9‑62.
Ultrasonic Parking Assist
If available, the Ultrasonic Rear
Parking Assist (URPA) system uses
sensors on the rear bumper to
assist with parking and avoiding
objects while in R (Reverse).
It operates at speeds less than
8 km/h (5 mph). URPA uses audible
beeps to provide distance and
system information.

Black plate (32,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-32 In Brief
Keep the sensors on the vehicle's
rear bumper clean to ensure proper
operation.
SeeUltrasonic Parking Assist on
page 9‑61.
Power Outlets
Accessory power outlets can be
used to plug in electrical equipment,
such as a cell phone, MP3
player, etc.
The vehicle may have two
accessory power outlets located
below the climate control system,
or may have one accessory power
outlet and one cigarette lighter. The
cigarette lighter is designed to fit
only in the receptacle closest to the
driver.
There may be another accessory
power outlet in the rear cargo area.
If the vehicle has a floor console,
there is an accessory power outlet
inside the storage bin and one on
the rear of the floor console. The accessory power outlets are
powered, even when the ignition is
in LOCK/OFF. Continuing to use
power outlets while the ignition is in
LOCK/OFF may cause the vehicle's
battery to run down.
See
Power Outlets on page 5‑9.Universal Remote System
Vehicles with the Universal Remote
System will have these buttons
located in the headliner. This system provides a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Read the instructions completely
before attempting to program the
transmitter. Because of the steps
involved, it may be helpful to
have another person assist with
programming the transmitter.
See
Universal Remote System on
page 5‑56.

Black plate (36,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-36 In Brief
Resetting the Oil Life System
To reset the Engine Oil Life System
on most vehicles:
1. Display OIL LIFE REMAININGon the DIC. If the vehicle does
not have DIC buttons, the
vehicle must be in P (Park) to
access this display.
2. Press and hold the SET/RESET button on the DIC, or the trip
odometer reset stem if the
vehicle does not have DIC
buttons, for more than
five seconds. The oil life will
change to 100%.
On all vehicles, the Engine Oil Life
System can be reset as follows:
1. Turn the ignition to ON/RUN with the engine off.
2. Fully press the accelerator pedal slowly three times within
five seconds.
3. Display OIL LIFE REMAINING on the DIC. If the display shows
100%, the system is reset. See
Engine Oil Life System on
page 10‑10.
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge
and a yellow fuel cap can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
See Fuel E85 (85% Ethanol) on
page 9‑71. For all other vehicles,
use only the unleaded gasoline
described under Recommended
Fuel on page 9‑68.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving
tips to get the best fuel economy
possible.
.Avoid fast starts and accelerate
smoothly.
.Brake gradually and avoid
abrupt stops.
.Avoid idling the engine for long
periods of time.
.When road and weather
conditions are appropriate, use
cruise control.
.Always follow posted speed
limits or drive more slowly when
conditions require.
.Keep vehicle tires properly
inflated.
.Combine several trips into a
single trip.
.Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
.Follow recommended scheduled
maintenance.
Roadside Assistance
Program
U.S.: 1-888-881-3302
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0801

Black plate (23,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-23
If the malfunction indicator lamp
comes on and stays on while the
engine is running, this indicates that
there is an OBD II problem and
service is required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system assists
the service technician in correctly
diagnosing any malfunction.
Notice:If the vehicle is
continually driven with this light
on, the emission controls might
not work as well, the vehicle fuel
economy might not be as good,
and the engine might not run as
smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty. Notice:
Modifications made
to the engine, transmission,
exhaust, intake, or fuel system
of the vehicle or the replacement
of the original tires with other
than those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by
the vehicle warranty. This could
also result in a failure to pass a
required Emission Inspection/
Maintenance test. See
Accessories and Modifications on
page 10‑3.
This light comes on during a
malfunction in one of two ways:
Light Flashing: A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required. To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, stop
and park the vehicle. Turn the
vehicle off, wait at least 10 seconds,
and restart the engine. If the light is
still flashing, follow the previous
steps and see your dealer for
service as soon as possible.
Light On Steady: An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.

Black plate (43,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Instruments and Controls 5-43
be reduced the next time the vehicle
is driven. The vehicle may be driven
at a reduced speed while this
message is on, but acceleration and
speed may be reduced. Anytime
this message stays on, the vehicle
should be taken to your dealer for
service as soon as possible.
Fuel System Messages
FUEL LEVEL LOW
This message displays and a chime
may sound if the fuel level is low.
Refuel as soon as possible. See
Fuel Gauge on page 5‑14andFuel
on page 9‑68 for more information.
TIGHTEN GAS CAP
This message may display along
with the check engine light on the
instrument panel cluster if the
vehicle's fuel cap is not tightened
properly. SeeMalfunction Indicator
Lamp on page 5‑22. Reinstall the
fuel cap fully. See Filling the Tank
on page 9‑72. The diagnostic
system can determine if the fuel cap has been left off or improperly
installed. A loose or missing fuel
cap allows fuel to evaporate into the
atmosphere. A few driving trips with
the cap properly installed should
turn this light and message off.
Key and Lock Messages
REPLACE BATTERY IN
REMOTE KEY
This message displays if a Remote
Keyless Entry (RKE) transmitter
battery is low. The battery needs to
be replaced in the transmitter. See
“Battery Replacement”
under
Remote Keyless Entry (RKE)
System Operation on page 2‑3.
Lamp Messages
TURN SIGNAL ON
This message displays and a chime
sounds if a turn signal is left on for
1.2 km (0.75 mi). Move the turn
signal/multifunction lever to the off
position.
Object Detection System
Messages
PARK ASST BLOCKED SEE
OWNERS MANUAL
This message displays if there is
something interfering with the park
assist system. See Ultrasonic
Parking Assist on page 9‑61 for
more information.
PARK ASSIST OFF
After the vehicle has been started,
this message displays to remind the
driver that the URPA system has
been turned off. Press the set/reset
button or the trip odometer reset
stem to acknowledge this message
and clear it from the DIC display. To
turn the URPA system back on, see
Ultrasonic Parking Assist on
page 9‑61.