2012 GMC YUKON tow

Black plate (6,1)GMC Yukon/Yukon XL Owner Manual - 2012
6-6 Lighting
Turn and Lane-Change
Signals
An arrow on the instrument panel
cluster flashes in the direction of the
turn or lane change.
Move the lever all the way up or
down to signal a turn.
Raise or lower the lever for less
than one second until the arrow
starts to flash to signal a lane
change. This causes the turn
signals to automatically flash three
times. It will flash six times if
tow-haul mode is active. Holding the
turn signal lever for more thanone second will cause the turn
signals to flash until you release the
lever.
The lever returns to its starting
position whenever it is released.
If after signaling a turn or a lane
change the arrows flash rapidly or
do not come on, a signal bulb could
be burned out.
Have the bulbs replaced. If the bulb
is not burned out, check the fuse.
See
Fuses and Circuit Breakers on
page 10‑40.
Turn Signal On Chime
If the turn signal is left on for more
than 1.2 km (0.75 mi), a chime will
sound at each flash of the turn
signal and the message TURN
SIGNAL ON will also appear in the
Driver Information Control (DIC). To
turn the chime and message off,
move the turn signal lever to the off
position.
Fog Lamps
For vehicles with fog lamps, the
control is located next to the exterior
lamps control on the instrument
panel, to the left of the steering
column.
The ignition must be in the ON/RUN
position for the fog lamps to
come on.

Black plate (44,1)GMC Yukon/Yukon XL Owner Manual - 2012
7-44 Infotainment System
Tips and Troubleshooting Chart (cont'd)
ProblemRecommended Action
Sometimes the wireless headphone audio cuts out or
buzzes. Check for obstructions, low batteries, reception range,
and interference from cellular telephone towers, or use a
cellular telephone in the vehicle.
Check that the headphones are on correctly using the L
(left) and R (right) on the headphones.
The remote and/or the headphones are lost. See your dealer for assistance.
The DVD is playing, but there is no picture or sound. Check that the RSE video screen is sourced to the DVD player.
DVD Display Error Messages
The DVD display error message
depends on the radio that is in the
vehicle. The video screen can
display one of the following:
Disc Load/Eject Error:This
message displays when there are
disc load or eject problems. Disc Format Error:
This message
displays if the disc is inserted with
the disc label wrong side up, or if
the disc is damaged.
Disc Region Error: This message
displays if the disc is not from a
correct region.
No Disc Inserted: This message
displays if no disc is present when
Zor DVD AUX is pressed on the
radio.
DVD Distortion
Video distortion can occur when
operating cellular phones, scanners,
CB radios, Global Position Systems
(GPS)*, two-way radios, mobile fax
machines, or walkie talkies.
It might be necessary to turn off the
DVD player when operating one of
these devices in or near the vehicle.
*Excludes the OnStar
®System.

Black plate (2,1)GMC Yukon/Yukon XL Owner Manual - 2012
8-2 Climate Controls
9(Fan Control):Turn the left
knob clockwise or counterclockwise
to increase or decrease the fan
speed. Turn the knob all the way
counterclockwise to turn the front
system off.
Air Delivery Mode Control: Turn
clockwise or counterclockwise to
change the airflow direction inside
the vehicle. By positioning the knob
between two modes, a combination
of those modes is selected.
Select from the following modes:
H(Vent): Air is directed to the
instrument panel outlets.
)(Bi-Level): Air is divided
between the instrument panel and
floor outlets. Some air is directed
towards the windshield and side
window outlets. Cooler air is
directed to the upper outlets and
warmer air to the floor outlets.
6(Floor): Air is directed to the
floor outlets, with some of the air
directed to the windshield, side window, and second row floor
outlets. In this mode, the system
automatically selects outside air.
Recirculation cannot be selected
when in Floor Mode.
-(Defog):
The defog mode is
used to clear the windows of fog or
moisture. Air is directed to the
windshield, floor outlets, and side
window vents. In this mode, the
system turns off recirculation and
runs the air conditioning compressor
unless the outside temperature is
close to freezing. The recirculation
mode cannot be selected while in
the defog mode.
0(Defrost): The defrost mode is
used to remove fog or frost from
the windshield more quickly. Air is
directed to the windshield and side
window vents, with some directed to
the floor vents. In this mode, the
system automatically forces outside
air into the vehicle. The recirculation
mode cannot be selected while
in the defrost mode. The air
conditioning compressor runs automatically in this setting, unless
the outside temperature is close to
freezing.
Do not drive the vehicle until all the
windows are clear.
#(Air Conditioning):
Press this
button to turn the air conditioning
system on or off. An indicator light
comes on to show that the air
conditioning is on. The air
conditioning can be selected in
any mode as long as the fan
switch is on.
On hot days, open the windows to
let hot inside air escape; then close
them. This helps to reduce the time
it takes for the vehicle to cool down.
It also helps the system to operate
more efficiently.
The air conditioning system
removes moisture from the air, so a
small amount of water might drip
under the vehicle while idling or
after turning off the engine. This is
normal.

Black plate (6,1)GMC Yukon/Yukon XL Owner Manual - 2012
8-6 Climate Controls
the system remains at the
maximum cooling setting. If a
temperature setting of 32°C
(90°F) is chosen, the system
remains at the maximum heat
setting. Choosing either
maximum setting will not cause
the vehicle to heat or cool any
faster.
Do not cover the solar sensor
located on the top of the instrument
panel near the windshield. This
sensor regulates air temperature
based on sun load and also turns
on the headlamps. For more
information on the solar sensor, see
“Sensors” later in this section.
To avoid blowing cold air in cold
weather, the system will delay
turning on the fan until warm air is
available. The length of delay
depends on the engine coolant
temperature. Pressing the fan
switch will override this delay and
change the fan to a selected speed.Manual Operation
D C(Fan Control): Press these
buttons to increase or decrease the
fan speed.
Pressing either fan button while in
automatic control places the fan
under manual control. The fan
setting remains displayed and the
AUTO light turns off. The air
delivery mode remains under
automatic control.
H G(Air Delivery Mode Control):
Press these buttons to change the
direction of the airflow in the vehicle.
Repeatedly press either button until
the desired mode appears on the
display. Pressing either mode button
while the system is off changes the
air delivery mode without turning the
system on. Pressing either mode
button while in automatic control
places the mode under manual
control. The air delivery mode setting is
displayed and the AUTO light turns
off. The fan remains under
automatic control.
H(Vent):
Air is directed to the
instrument panel outlets.
)(Bi-Level): Air is divided
between the instrument panel and
floor outlets. Some air is directed
towards the windshield and side
window outlets.
6(Floor): Air is directed to the
floor outlets, with some to the
windshield, side window outlets, and
second row floor outlets. In this
mode, the system automatically
selects outside air.

Black plate (1,1)GMC Yukon/Yukon XL Owner Manual - 2012
Driving and Operating 9-1
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . . 9-2
Defensive Driving . . . . . . . . . . . . . 9-3
Drunk Driving . . . . . . . . . . . . . . . . . 9-3
Control of a Vehicle . . . . . . . . . . . 9-3
Braking . . . . . . . . . . . . . . . . . . . . . . . 9-4
Steering . . . . . . . . . . . . . . . . . . . . . . . 9-4
Off-Road Recovery . . . . . . . . . . . . 9-5
Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road Driving . . . . . . . . . . . . . . 9-6
Driving on Wet Roads . . . . . . . . 9-11
Highway Hypnosis . . . . . . . . . . . 9-12
Hill and Mountain Roads . . . . . 9-13
Winter Driving . . . . . . . . . . . . . . . 9-13
If the Vehicle Is Stuck . . . . . . . . 9-15
Vehicle Load Limits . . . . . . . . . . 9-16
Starting and Operating
New Vehicle Break-In . . . . . . . . 9-21
Adjustable Throttle and BrakePedal . . . . . . . . . . . . . . . . . . . . . . . 9-22
Ignition Positions . . . . . . . . . . . . 9-22 Starting the Engine . . . . . . . . . . 9-24
Engine Heater . . . . . . . . . . . . . . . 9-26
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . 9-27
Shifting Into Park . . . . . . . . . . . . 9-27
Shifting out of Park . . . . . . . . . . 9-28
Parking over Things
That Burn . . . . . . . . . . . . . . . . . . 9-29
Active Fuel Management
®. . . 9-29
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 9-30
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . 9-30
Automatic Transmission
Automatic Transmission . . . . . 9-31
Manual Mode . . . . . . . . . . . . . . . . 9-35
Tow/Haul Mode . . . . . . . . . . . . . . 9-36
Drive Systems
Four-Wheel Drive (Two SpeedAutomatic
Transfer Case) . . . . . . . . . . . . . 9-37
Four-Wheel Drive (Single Speed Automatic
Transfer Case) . . . . . . . . . . . . . 9-42
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . 9-44
Parking Brake . . . . . . . . . . . . . . . 9-45
Brake Assist . . . . . . . . . . . . . . . . . 9-45
Hill Start Assist (HSA) . . . . . . . 9-46
Ride Control Systems
StabiliTrak®System . . . . . . . . . 9-46
Locking Rear Axle . . . . . . . . . . . 9-49
Continuous Damping Control (CDC) . . . . . . . . . . . . . . 9-50
Automatic Level Control . . . . . 9-50
Cruise Control
Cruise Control . . . . . . . . . . . . . . . 9-51
Object Detection Systems
Ultrasonic Parking Assist . . . . 9-53
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . 9-54
Rear Vision Camera (RVC) . . . . . . . . . . . . . 9-57
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
Recommended Fuel . . . . . . . . . 9-62
Gasoline Specifications (U.S.and Canada Only) . . . . . . . . . . 9-62

Black plate (2,1)GMC Yukon/Yukon XL Owner Manual - 2012
9-2 Driving and Operating
California FuelRequirements . . . . . . . . . . . . . . 9-62
Fuels in Foreign Countries . . . 9-62
Fuel Additives . . . . . . . . . . . . . . . 9-63
Fuel E85 (85% Ethanol) . . . . . 9-64
Filling the Tank . . . . . . . . . . . . . . 9-65
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 9-67
Towing
General TowingInformation . . . . . . . . . . . . . . . . . 9-67
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . 9-68
Trailer Towing . . . . . . . . . . . . . . . . 9-72
Towing Equipment . . . . . . . . . . . 9-76
Trailer Sway Control (TSC) . . . . . . . . . . . . . . 9-86
Conversions and Add-Ons
Add-On ElectricalEquipment . . . . . . . . . . . . . . . . . 9-86
Adding a Snow Plow or Similar Equipment . . . . . . . . . . 9-86
Driving Information
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention
away from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, always
keep your eyes on the road, hands
on the wheel, and mind on the drive.
.Do not use a phone in
demanding driving situations.
Use a hands-free method to
place or receive necessary
phone calls.
.Watch the road. Do not
read, take notes, or look up
information on phones or other
electronic devices.
.Designate a front seat
passenger to handle potential
distractions.
.Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings.
Program all trip information into
any navigation device prior to
driving.
.Wait until the vehicle is parked
to retrieve items that have fallen
to the floor.
.Stop or park the vehicle to tend
to children.

Black plate (16,1)GMC Yukon/Yukon XL Owner Manual - 2012
9-16 Driving and Operating
Release the accelerator pedal while
shifting, and press lightly on the
accelerator pedal when the
transmission is in gear. Slowly
spinning the wheels in the forward
and reverse directions causes a
rocking motion that could free the
vehicle. If that does not get the
vehicle out after a few tries, it might
need to be towed out. Recovery
hooks can be used, if the vehicle
has them. If the vehicle does need
to be towed out, seeTowing the
Vehicle on page 10‑93.
Recovery Hooks
{WARNING
Never pull on recovery hooks
from the side. The hooks could
break and you and others could
be injured. When using recovery
hooks, always pull the vehicle
straight out.
Notice: Never use recovery
hooks to tow the vehicle. Your
vehicle could be damaged and it
would not be covered by
warranty.
For vehicles with recovery hooks at
the front of the vehicle, you can use
them if you are stuck off-road and
need to be pulled to some place
where you can continue driving.
Vehicle Load Limits
It is very important to know how
much weight your vehicle can
carry. This weight is called the vehicle capacity weight and
includes the weight of all
occupants, cargo, and all
nonfactory-installed options.
Two labels on your vehicle show
how much weight it was
designed to carry, the Tire and
Loading Information label and
the Certification/Tire label.
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
This can cause systems to
break and change the way the
vehicle handles. This could
cause loss of control and a
crash. Overloading can also
shorten the life of the vehicle.

Black plate (18,1)GMC Yukon/Yukon XL Owner Manual - 2012
9-18 Driving and Operating
the amount of available cargo
and luggage load capacity is
650 lbs (1400−750
(5 x 150) = 650 lbs).
5.Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely
exceed the available cargo
and luggage load capacity
calculated in Step 4.
6.If your vehicle will be towing
a trailer, the load from your
trailer will be transferred to
your vehicle. Consult this
manual to determine how this
reduces the available cargo
and luggage load capacity of
your vehicle. SeeTrailer
Towing on page 9‑72 for
important information on
towing a trailer, towing safety
rules and trailering tips.Example 1
A. Vehicle Capacity Weight for Example 1 = 453 kg (1,000 lbs)
B. Subtract Occupant Weight @ 68 kg (150 lbs) × 2 = 136 kg
(300 lbs)
C. Available Occupant and Cargo Weight = 317 kg (700 lbs)Example 2
A. Vehicle Capacity Weight for Example 2 = 453 kg (1,000 lbs)
B. Subtract Occupant Weight @ 68 kg (150 lbs) × 5 = 136 kg
(750 lbs)
C. Available Cargo Weight = 113 kg (250 lbs)