2007 GMC YUKON DENALI V4 mode

v(Title):Press this button to return the DVD to
the main menu of the DVD. This function may
vary for each disc.
y(Main Menu):Press this button to access the
DVD menu. The DVD menu is different on
every DVD. Use the up, down, left, and right arrow
buttons to move the cursor around the DVD
menu. After making a selection press the enter
button. This button only operates when using
a DVD.
n,q,p,o(Menu Navigation Arrows):Use
the arrow buttons to navigate through a menu.
r(Enter):Press this button to select the choice
that is highlighted in any menu.
z(Display Menu):Press this button to adjust
the brightness, screen display mode (normal,
full, or zoom), and display the language menu.
q(Return):Press this button to exit the current
active menu and return to the previous menu.
This button will operate only when the display
menu or a DVD menu is active.
c(Stop):Press this button to stop playing,
rewinding, or fast forwarding a DVD. Press
this button twice to return to the beginning of
the DVD.
s(Play/Pause):Press this button to start
playing a DVD. Press this button while a DVD is
playing to pause it. Press it again to continue
playing the DVD.
When the DVD is playing, depending on the radio,
you may be able to do slow play by pressing
the pause button then pressing the fast forward
button. The DVD will continue playing in a
slow play mode. You may also, depending on the
radio, perform reverse slow play by pressing
the pause button and then pressing the fast
reverse button. To cancel slow play mode, press
the play/pause button.
328

Problem Recommended Action
No power. The ignition might not be
turned on or in accessory.
The picture does not ll
the screen. There are
black borders on the top
and bottom or on both
sides or it looks
stretched out.Check the display mode
settings in the setup menu
by pressing the display
menu button on the
remote control.
In auxiliary mode, the
picture moves or scrolls.Check the auxiliary input
connections at both
devices.
The remote control
does not work.Check to make sure there
is no obstruction between
the remote control and the
transmitter window.
Check the batteries to
make sure they are not
dead or installed
incorrectly.
After stopping the player,
I push Play but
sometimes the DVD
starts where I left off
and sometimes at the
beginning.If the stop button was
pressed one time, the
DVD player will resume
playing where the DVD
was stopped. If the stop
button was pressed two
times the DVD player will
begin to play from the
beginning of the DVD.Problem Recommended Action
The auxiliary source is
running but there is no
picture or sound.Check that the RSE video
screen is in the auxiliary
source mode.
Check the auxiliary input
connections at both
devices.
Sometimes the wireless
headphone audio cuts
out or buzzes.Check for obstructions,
low batteries, reception
range, and interference
from cellular telephone
towers or by using your
cellular telephone in
the vehicle.
Check that the
headphones are on
correctly using the L (left)
and R (right) on the
headphones.
I lost the remote and/or
the headphones.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.
331

g(Mute/Voice Recognition):Press and release
this button to silence the vehicle speakers only.
The audio of the wireless and wired headphones, if
your vehicle has these features, will not be
muted. Press and release this button again, to
turn the sound on.
If your vehicle has the navigation system, press
and hold this button for longer than one second to
initiate voice recognition. See “Voice Recognition”
in the Navigation System manual for more
information.
If your vehicle has OnStar
®, press and hold this
button for longer than one second to interact
with the OnStar
®system. If your vehicle also has
the navigation system, press and hold this
button for longer than one second to initiate voice
recognition and say “OnStar” to enter OnStar
®
mode. See theOnStar®System on page 164in
this manual for more information.
SRCE (Source):Press this button to switch
between the radio (AM, FM), XM™ (if equipped),
CD, and if your vehicle has these features,
DVD, front auxiliary, and rear auxiliary.+
e−e(Volume):Press the plus or minus
button to increase or to decrease the radio volume.
¨(Seek):Press the seek arrow to go to the
next radio station while in AM, FM, or XM™
(if equipped). Press this button to go to the next
track or chapter while sourced to the DVD
slot. Press the button to go to the next disc while
sourced to a CD or DVD changer, if multiple
discs are loaded.
Radio Reception
You may experience frequency interference and
static during normal radio reception if items
such as cellphone 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.
336

But the ability to drive is affected well below a
BAC of 0.10 percent. Research shows that
the driving skills of many people are impaired at a
BAC approaching 0.05 percent, and that the
effects are worse at night. All drivers are impaired
at BAC levels above 0.05 percent. Statistics
show that the chance of being in a collision
increases sharply for drivers who have a BAC of
0.05 percent or above. A driver with a BAC level of
0.06 percent has doubled his or her chance of
having a collision. At a BAC level of 0.10 percent,
the chance of this driver having a collision is
12 times greater; at a level of 0.15 percent, the
chance is 25 times greater!
The body takes about an hour to rid itself of the
alcohol in one drink. No amount of coffee or
number of cold showers will speed that up. “I will
be careful” is not the right answer. What if
there is an emergency, a need to take sudden
action, as when a child darts into the street?
A person with even a moderate BAC might not be
able to react quickly enough to avoid the
collision.There is something else about drinking and driving
that many people do not know. Medical research
shows that alcohol in a person’s system can make
crash injuries worse, especially injuries to the
brain, spinal cord, or heart. This means that when
anyone who has been drinking — driver or
passenger — is in a crash, that person’s chance
of being killed or permanently disabled is
higher than if the person had not been drinking.
{CAUTION:
Drinking and then driving is very
dangerous. Your reexes, perceptions,
attentiveness, and judgment can be
affected by even a small amount of
alcohol. You can have a serious — or
even fatal — collision if you drive after
drinking. Please do not drink and drive or
ride with a driver who has been drinking.
Ride home in a cab; or if you are with a
group, designate a driver who will not
drink.
345

Traction Control Operation
The traction control system is part of the
StabiliTrak®system. Traction control limits wheel
spin by reducing engine power to the wheels
(engine speed management) and by applying
brakes to each individual wheel (brake-traction
control) as necessary.
The traction control system is enabled
automatically when you start your vehicle. It will
activate and the StabiliTrak
®light will ash if
it senses that any of the wheels are spinning or
beginning to lose traction while driving. If you turn
off traction control, only the brake-traction
control portion of traction control will work. The
engine speed management will be disabled. In this
mode, engine power is not reduced automatically
and the driven wheels can spin more freely.
This can cause the brake-traction control to
activate constantly.
Notice:If you allow the wheel(s) of one axle
to spin excessively while the StabiliTrak
®, ABS
and brake warning lights and the SERVICE
STABILITRAK message are displayed,
you could damage the transfer case. The
repairs would not be covered by your warranty.Reduce engine power and do not spin the
wheel(s) excessively while these lights and this
message are displayed.
The traction control system may activate on
dry or rough roads or under conditions such as
heavy acceleration while turning or abrupt
upshifts/downshifts of the transmission. When
this happens, you may notice a reduction in
acceleration, or may hear a noise or vibration.
This is normal.
If your vehicle is in cruise control when the system
activates, the StabiliTrak
®light will ash and the
cruise control will automatically disengage.
When road conditions allow you to use cruise
again, you may re-engage the cruise control. See
Cruise Control on page 200.
StabiliTrak
®may also turn off automatically if it
determines that a problem exists with the system.
If the problem does not clear itself after restarting
the vehicle, you should see your dealer for
service.
352

Level Control
Automatic Level Control
The automatic level control rear suspension is
available on light-duty vehicles and comes
as a part of the Autoride
®suspension, if equipped.
This type of level control is fully automatic and
will provide a better leveled riding position as well
as better handling under a variety of passenger
and loading conditions. An air compressor
connected to the rear shocks will raise or lower
the rear of the vehicle to maintain proper vehicle
height. The system is activated when the
ignition key is turned to RUN and will automatically
adjust vehicle height thereafter. The system
may exhaust (lower vehicle height) for up to
ten minutes after the ignition key has been turned
off. You may hear the air compressor operating
when the height is being adjusted.
If a weight-distributing hitch is being used, it is
recommended to allow the shocks to inate,
thereby leveling the vehicle prior to adjusting the
hitch.
Autoride®
The Autoride®feature provides improved vehicle
ride and handling under a variety of passenger and
loading conditions.
The system is fully automatic and uses a computer
controller to continuously monitor vehicle speed,
wheel to body position, lift/dive and steering
position of the vehicle. The controller then sends
signals to each shock absorber to independently
adjust the damping level to provide the optimum
vehicle ride.
Autoride
®also interacts with the tow/haul mode
that, when activated, will provide additional control
of the shock absorbers. This additional control
results in better ride and handling characteristics
when the vehicle is loaded or towing a trailer. See
“Tow/Haul Mode” underTowing a Trailer on
page 400for more information.
399

If You Do Decide To Pull A Trailer
If you do, here are some important points:
There are many different laws, including speed
limit restrictions, having to do with trailering.
Make sure your rig will be legal, not only where
you live but also where you’ll be driving. A
good source for this information can be state
or provincial police.
Consider using a sway control. See “Hitches”
later in this section.
Don’t tow a trailer at all during the rst
500 miles (800 km) your new vehicle is driven.
Your engine, axle or other parts could be
damaged.
Then, during the rst 500 miles (800 km) that
you tow a trailer, don’t drive over 50 mph
(80 km/h) and don’t make starts at full throttle.
This helps your engine and other parts of
your vehicle wear in at the heavier loads.
You can tow in DRIVE (D). You may want to
shift the transmission to THIRD (3) or, if
necessary, a lower gear selection if the
transmission shifts too often (e.g., under heavy
loads and/or hilly conditions). See “Tow/Haul
Mode” underTowing a Trailer on page 400.Three important considerations have to do with
weight:
the weight of the trailer
the weight of the trailer tongue
and the weight on your vehicle’s tires
Tow/Haul Mode
The Tow/Haul feature assists when pulling a
heavy trailer or a large or heavy load. The purpose
of the Tow/Haul mode is to:
Reduce the frequency and improve the
predictability of transmission shifts when
pulling a heavy trailer or a large or heavy load.
Provide the same solid shift feel when pulling a
heavy trailer or a large or heavy load as when
the vehicle is unloaded.
Improve control of vehicle speed while
requiring less throttle pedal activity when
pulling a heavy trailer or a large or heavy load.
401

Press this button at the end of the shift lever to
enable tow/haul mode.
When the button is pressed, a light on the
instrument panel will illuminate to indicate that
Tow/Haul has been selected. Tow/Haul may
be turned off by pressing the button again, at
which time the indicator light on the instrument
panel will turn off. The vehicle will automatically
turn off tow/haul every time it is started.Tow/Haul is designed to be most effective
when the vehicle and trailer combined weight
is at least 75 percent of the vehicle’s Gross
Combination Weight Rating (GCWR). See “Weight
of the Trailer” later in this section. Tow/Haul is
most useful under the following driving conditions:
When pulling a heavy trailer or a large or
heavy load through rolling terrain.
When pulling a heavy trailer or a large or
heavy load in stop and go traffic.
When pulling a heavy trailer or a large or
heavy load in busy parking lots where
improved low speed control of the vehicle is
desired.
Operating the vehicle in Tow/Haul when lightly
loaded or with no trailer at all will not cause
damage. However, there is no benet to the
selection of Tow/Haul when the vehicle is
unloaded. Such a selection when unloaded may
result in unpleasant engine and transmission
driving characteristics and reduced fuel economy.
Tow/Haul is recommended only when pulling a
heavy trailer or a large or heavy load.
402