lights GMC YUKON XL 2007 Owner's Manual

Anti-Lock Brake System Warning
Light
With the anti-lock brake
system, this light will
come on when you start
your engine and may
stay on for several
seconds.
That’s normal. If the light does not come on then,
have it xed so it will be ready to warn you if
there is a problem.If the light stays on, or comes on when you are
driving, your vehicle needs service. You will
also hear a chime sound when the light is on
steady. If the regular brake system warning light is
not on, you still have brakes, but you do not
have anti-lock brakes. If the regular brake system
warning light is also on you do not have anti-lock
brakes and there is a problem with your regular
brakes. In addition to both lights, you will also hear
a chime sound on the rst occurrence of a
problem and each time the vehicle is shut off and
then restarted. SeeBrake System Warning
Light on page 232.
The anti-lock brake system warning light should
come on briey when you turn the ignition
key to RUN. If the light does not come on then,
have it xed so it will be ready to warn you if there
is a problem.
233

NO CHANGE:No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
REMOTE DOOR LOCK
This feature allows you to select the type of
feedback you will receive when locking the vehicle
with the remote keyless entry transmitter. You will
not receive feedback when locking the vehicle with
the remote keyless entry transmitter if the doors are
open. SeeRemote Keyless Entry System
Operation on page 113for more information.
Press the customization button until REMOTE
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:
OFF:There will be no feedback when you press
the lock button on the remote keyless entry
transmitter.
LIGHTS ONLY:The exterior lamps will ash when
you press the lock button on the remote keyless
entry transmitter.HORN ONLY:The horn will sound on the second
press of the lock button on the remote keyless
entry transmitter.
HORN & LIGHTS (default):The exterior lamps
will ash when you press the lock button on the
remote keyless entry transmitter, and the horn will
sound when the lock button is pressed again within
ve seconds of the previous command.
NO CHANGE:No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
267

REMOTE DOOR UNLOCK
This feature allows you to select the type of
feedback you will receive when unlocking the
vehicle with the remote keyless entry transmitter.
You will not receive feedback when unlocking
the vehicle with the remote keyless entry
transmitter if the doors are open. SeeRemote
Keyless Entry System Operation on page 113for
more information.
Press the customization button until REMOTE
DOOR UNLOCK 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:
LIGHTS OFF:The exterior lamps will not ash
when you press the unlock button on the remote
keyless entry transmitter.
LIGHTS ON (default):The exterior lamps will
ash when you press the unlock button on
the remote keyless entry transmitter.NO CHANGE:No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
DELAY DOOR LOCK
This feature allows you to select whether or not
the locking of the vehicle’s doors and liftgate
will be delayed. When locking the doors and
liftgate with the power door lock switch or the
remote keyless entry transmitter and a door or the
liftgate is open, this feature will delay locking
the doors and liftgate until ve seconds after the
last door is closed. You will hear three chimes
to signal that the delayed locking feature is in use.
The key must be out of the ignition for this
feature to work. You can temporarily override
delayed locking by pressing the power door lock
switch or the remote keyless entry transmitter
a second time. SeeDelayed Locking on page 121
for more information.
268

APPROACH LIGHTING
This feature allows you to select whether or not to
have the exterior lights turn on briey during
low light periods after unlocking the vehicle using
the remote keyless entry transmitter.
Press the customization button until APPROACH
LIGHTING 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:
OFF:The exterior lights will not turn on when you
unlock the vehicle with the remote keyless entry
transmitter.
ON (default):If it is dark enough outside, the
exterior lights will turn on briey when you unlock
the vehicle with the remote keyless entry
transmitter.
The lights will remain on for 20 seconds or until
the lock button on the remote keyless entry
transmitter is pressed, or the vehicle is no longer
off. SeeRemote Keyless Entry System Operation
on page 113for more information.NO CHANGE:No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
CHIME VOLUME
This feature allows you to select the volume level
of the chime.
Press the customization button until CHIME
VOLUME 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:
NORMAL (default):The chime volume will be set
to a normal level.
LOUD:The chime volume will be set to a loud
level.
NO CHANGE:No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
270

If you keep pace with the traffic and allow realistic
following distances, you will eliminate a lot of
unnecessary braking. That means better braking
and longer brake life.
If your engine ever stops while you are driving,
brake normally but do not pump your brakes.
If you do, the pedal may get harder to push down.
If your engine stops, you will still have some
power brake assist. But you will use it when you
brake. Once the power assist is used up, it
may take longer to stop and the brake pedal will
be harder to push.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modications on page 426.Anti-Lock Brake System (ABS)
Your vehicle has the Anti-Lock Brake System
(ABS), an advanced electronic braking system that
will help prevent a braking skid.
When you start your engine and begin to drive
away, ABS will check itself. You may hear a
momentary motor or clicking noise while this test
is going on. This is normal.
If there is a problem
with ABS, this warning
light will stay on.
SeeAnti-Lock Brake
System Warning
Light on page 233.
Along with ABS, your vehicle has a Dynamic Rear
Proportioning (DRP) system. If there is a DRP
problem, both the brake and ABS warning lights will
come on accompanied by a 10-second chime. The
lights and chime will come on each time the ignition
is turned on until the problem is repaired. See your
dealer for service.
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.
SeeCruise Control on page 196.
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.
350

When you drive over bumps, rocks, or other
obstacles, your wheels can leave the ground.
If this happens, even with one or two wheels, you
cannot control the vehicle as well or at all.
Because you will be on an unpaved surface, it is
especially important to avoid sudden acceleration,
sudden turns, or sudden braking.
In a way, off-road driving requires a different kind
of alertness from driving on paved roads and
highways. There are no road signs, posted speed
limits, or signal lights. You have to use your
own good judgment about what is safe and what
is not.
Drinking and driving can be very dangerous on
any road. And this is certainly true for off-road
driving. At the very time you need special alertness
and driving skills, your reexes, perceptions,
and judgment can be affected by even a small
amount of alcohol. You could have a serious — or
even fatal — accident if you drink and drive or
ride with a driver who has been drinking.
SeeDrunken Driving on page 341.Driving on Off-Road Hills
Off-road driving often takes you up, down, or
across a hill. Driving safely on hills requires good
judgment and an understanding of what your
vehicle can and cannot do. There are some hills
that simply cannot be driven, no matter how
well built the vehicle.
{CAUTION:
Many hills are simply too steep for any
vehicle. If you drive up them, you will
stall. If you drive down them, you cannot
control your speed. If you drive across
them, you will roll over. You could be
seriously injured or killed. If you have any
doubt about the steepness, do not drive
the hill.
362

No one can see as well at night as in the daytime.
But as we get older these differences increase.
A 50-year-old driver may require at least twice as
much light to see the same thing at night as a
20-year-old.
What you do in the daytime can also affect your
night vision. For example, if you spend the
day in bright sunshine you are wise to wear
sunglasses. Your eyes will have less trouble
adjusting to night. But if you are driving, do not
wear sunglasses at night. They may cut down on
glare from headlamps, but they also make a
lot of things invisible.
You can be temporarily blinded by approaching
headlamps. It can take a second or two, or
even several seconds, for your eyes to re-adjust
to the dark. When you are faced with severe glare,
as from a driver who does not lower the high
beams, or a vehicle with misaimed headlamps,
slow down a little. Avoid staring directly into
the approaching headlamps.Keep the windshield and all the glass on your
vehicle clean — inside and out. Glare at night is
made much worse by dirt on the glass. Even
the inside of the glass can build up a lm caused
by dust. Dirty glass makes lights dazzle and
ash more than clean glass would, making the
pupils of your eyes contract repeatedly.
Remember that the headlamps light up far less
of a roadway when you are in a turn or curve.
Keep your eyes moving; that way, it is easier to
pick out dimly lighted objects. Just as the
headlamps should be checked regularly for
proper aim, so should your eyes be examined
regularly. Some drivers suffer from night
blindness — the inability to see in dim
light — and are not even aware of it.
374

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs
rst, if you add only DEX-COOL
®extended
life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have
a problem with engine overheating, seeEngine
Overheating on page 452.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to
−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant may require changing sooner, at
the rst maintenance service after each
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
449

Traction
StabiliTrak®System.................................. 348
Trailer
Recommendations..................................... 422
Transmission
Fluid, Automatic........................................ 445
Transmission Operation, Automatic............... 142
Trip Odometer.............................................. 226
Turn and Lane-Change Signals.................... 191
Turn Signal/Multifunction Lever..................... 190
U
Ultrasonic Rear Parking Assist (URPA)......... 205
Understanding Radio Reception.................... 335
Uniform Tire Quality Grading........................ 502
Universal Home Remote System.................. 169
Operation.................................................. 170
V
Vehicle
Control...................................................... 344
Damage Warnings........................................ 5
Loading..................................................... 390
Symbols....................................................... 5Vehicle Customization, DIC.......................... 264
Vehicle Data Collection and Event Data
Recorders................................................. 583
Vehicle Identication
Number (VIN)........................................... 538
Service Parts Identication Label.............. 538
Ventilation Adjustment.................................. 220
Visors........................................................... 132
Voltmeter Gage............................................ 231
W
Warning Lights, Gages and Indicators.......... 224
Warnings
DIC Warnings and Messages.................... 254
Hazard Warning Flashers.......................... 188
Other Warning Devices............................. 188
Safety and Symbols...................................... 4
Vehicle Damage........................................... 5
Wheels
Alignment and Tire Balance...................... 504
Different Size............................................ 502
Replacement............................................. 504
Where to Put the Restraint............................ 72
Windows...................................................... 130
Power....................................................... 131
607