2003 GMC YUKON ESP

If you start your vehicle in a dark garage, the automatic
headlamp system will come on immediately. Once
you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if it is bright enough outside. During that
delay, your instrument panel cluster may not be as
bright as usual. Make sure your instrument panel
brightness control is in the full bright position. See
“Instrument Panel Brightness Control”underInterior
Lamps on page 3-18.
To idle your vehicle with the automatic headlamp
system off, turn the control to the off position.
You may be able to turn off your Automatic Headlamp
System. See″Daytime Running Lamps (DRL)″later
in this section for more information.
Your headlamps will also stay on after you exit the
vehicle. You can program this feature using the Driver
Information Center. SeeDriver Information Center (DIC)
on page 3-53.
As with any vehicle, you should turn on the regular
headlamp system when you need them.Lamps On Reminder
A reminder chime will sound when your headlamps or
parking lamps are manually turned on and your
ignition is off, in LOCK, ACCESSORY, or your door is
open. To disable the chime, turn the light off then
back on.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada.
The DRL system will come on when the following
conditions are met:
•the ignition is on,
•the exterior lamps control is AUTO,
•the automatic transmission is not in PARK (P),
•the light sensor determines it is daytime and
When the DRL are on, only your DRL lamps will be on.
The taillamps, sidemarker and other lamps won’tbe
on. The instrument panel won’t be lit up either.
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2003 - Yukon/Yukon XL

When a disc is inserted, the CD symbol will be
displayed. If more than one disc has been loaded, a
number for each disc will be displayed. If you select an
equalization setting for your disc, it will be activated
each time you play a disc.
If the radio is on or off, the last disc loaded will begin to
play automatically.
As each new track starts to play, the track number will
appear on the display.
Playing a Specic Loaded
Compact Disc
For every CD loaded, a number will appear on the radio
display. To play a specific CD,first press the CD AUX
button to start playing a CD. Then press the numbered
pushbutton that corresponds to the CD you want to
play. A small bar will appear under the CD number that
is playing, and the track number will appear.
If an error appears on the radio display, see“Compact
Disc Messages”later in this section.
LOAD CD
Z(Eject):Pressing the CD eject side of
this button will eject a single disc or multiple discs.
To eject the disc that is currently playing, press
and release this button. To eject multiple discs, press
and hold this button for two seconds. You will hear
a beep and the light willflash to let you know when a
disc is being ejected.REMOVE CD will be displayed. You can now remove
the disc. If the disc is not removed, after 25 seconds, the
disc will be automatically pulled back into the receiver.
If you try to push the disc back into the receiver,
before the 25 second time period is complete, the
receiver will sense an error and will try to eject the disc
several times before stopping.
Do not repeatedly press the CD eject side of the
LOAD CD eject button to eject a disc after you have
tried to push it in manually. The receivers 25-second
eject timer will reset at each press of eject, which
will cause the receiver to not eject the disc until the
25-second time period has elapsed.
Once the player stops and the disc is ejected, remove
the disc. After removing the disc, press the PWR
knob off and then on again. This will clear the
disc-sensing feature and enable discs to be loaded into
the player again.
{REV (Reverse):Press and hold this button to
reverse quickly within a track. You will hear sound at a
reduced volume. Release it to play the passage.
The display will show elapsed time.
FWD
|(Forward):Press and hold this button to
advance quickly within a track. You will hear sound at a
reduced volume. Release it to play the passage. The
display will show elapsed time.
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QSOURCER:Press this button to select AM, FM1,
FM2, or XM1 or XM2, (USA only, if equipped), or a
cassette tape or CD. The cassette or CD must be loaded
to play. Available loaded sources are shown on the
display as a tape or a CD symbol.
QSEEKR:Press the up or the down arrow to seek
to the next or to the previous radio station and stay
there.
QVOLR:Press the up or the down arrow to increase
or to decrease volume.
DVD Distortion
You may experience audio distortion in the
IR headphones when operating cellular phones,
scanners, CB radios, Global Positioning Systems
(GPS)*, two-way radios, mobile fax, or walkie talkies.
It may be necessary to turn off the DVD player
when operating one of these devices in or near the
vehicle.
* Excludes the OnStar
®System.
Understanding Radio Reception
AM
The range for most AM stations is greater than for FM,
especially at night. The longer range, however, can
cause stations to interfere with each other. AM can pick
up noise from things like storms and power lines. Try
reducing the treble to reduce this noise if you ever get it.
FM Stereo
FM stereo will give you the best sound, but FM signals
will reach only about 10 to 40 miles (16 to 65 km).
Tall buildings or hills can interfere with FM signals,
causing the sound to come and go.
XM™Satellite Radio Service (United
States Only)
XM™Satellite Radio gives you digital radio reception
from coast to coast. Just as with FM, tall buildings
or hills can interfere with satellite radio signals, causing
the sound to come and go. Your radio may display
“NO SIGNAL”to indicate interference.
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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’ll be careful”isn’t the right
answer. What if there’s 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’s something else about drinking and driving that
many people don’t 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 reflexes, 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 don’t drink and drive or ride with a
driver who has been drinking.Ride home in a
cab; or if you’re with a group, designate a
driver who will not drink.
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2003 - Yukon/Yukon XL

Control of a Vehicle
You have three systems that make your vehicle go where
you want it to go. They are the brakes, the steering and
the accelerator. All three systems have to do their work at
the places where the tires meet the road.
Sometimes, as when you’re driving on snow or ice, it’s
easy to ask more of those control systems than the
tires and road can provide. That means you can lose
control of your vehicle. Also seeTraction Assist
System (TAS) on page 4-10.
Braking
Braking action involvesperception timeand
reaction time.
First, you have to decide to push on the brake pedal.
That’sperception time.Then you have to bring up your
foot and do it. That’sreaction time.
Averagereaction timeis about 3/4 of a second. But
that’s only an average. It might be less with one driver
and as long as two or three seconds or more with
another. Age, physical condition, alertness, coordination
and eyesight all play a part. So do alcohol, drugs and
frustration. But even in 3/4 of a second, a vehicle moving
at 60 mph (100 km/h) travels 66 feet (20 m). That
could be a lot of distance in an emergency, so keeping
enough space between your vehicle and others is
important.
And, of course, actual stopping distances vary greatly
with the surface of the road (whether it’s pavement
or gravel); the condition of the road (wet, dry, icy); tire
tread; the condition of your brakes; the weight of
the vehicle and the amount of brake force applied.
Avoid needless heavy braking. Some people drive in
spurts—heavy acceleration followed by heavy
braking—rather than keeping pace with traffic. This is
a mistake. Your brakes may not have time to cool
between hard stops. Your brakes will wear out much
faster if you do a lot of heavy braking. If you keep pace
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2003 - Yukon/Yukon XL

Traction Assist System (TAS)
Your vehicle may have a Traction Assist System (TAS)
that limits wheel spin. This is especially useful in
slippery road conditions. The system operates only if it
senses that one or both of the rear wheels are
spinning or beginning to lose traction. When this
happens, the system reduces engine power to limit
wheel spin.
The traction control system is enabled every time your
vehicle is started. The system will activate if it senses
that any of the wheels are spinning or beginning to lose
traction.
You may hear or feel the system working or notice a
lack of accelerator response, but this is normal.
The Traction Assist System may operate on dry roads
under some conditions. When this happens, you
may notice a reduction in acceleration. This is normal
and doesn’t mean there’s a problem with your vehicle.
Examples of these conditions include a hard
acceleration in a turn, an abrupt upshift or downshift of
the transmission or driving on rough roads.If your vehicle is in cruise control when the TAS begins
to limit wheel spin, the cruise control will automatically
disengage. When road conditions allow you to safely
use it again, you may re-engage the cruise control. See
“Cruise Control”underTurn Signal/Multifunction
Lever on page 3-8.
When the traction off light
is on, the TAS is off and
will not limit wheel
spin. Adjust your driving
accordingly.
The traction off light will come on under the following
conditions:
The Traction Assist System is turned off, either by
pressing the TAS on/off button or turning off the
automatic engagement feature of the TAS.
The transmission is in FIRST (1); TAS will not
operate in this gear. This is normal.
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The vehicle is driven on an extremely rough road.
When the vehicle leaves the rough surface, slows
down or stops, the light will go off and TAS will
be on again. This is normal.
A Traction Assist System, Anti-Lock Brake System
or engine-related problem has been detected and
the vehicle needs service.
If the vehicle has been driven with the TAS system
on for long periods of time, or if the vehicle has
gone through many several high speed braking
maneuvers the system may be automatically
disabled. The system will automatically re-enable
after approximately two minutes of not using
the brakes.
SeeTraction Off Light on page 3-45.
The Traction Assist System, as delivered from the
factory, will automatically come on whenever you start
your vehicle. To limit wheel spin, especially in
slippery road conditions, you should always leave the
system on. But you can turn the TAS off if you ever need
to. You should turn the TAS off if your vehicle ever
gets stuck in sand, mud or snow and rocking the vehicle
is required. See“Rocking Your Vehicle”underIf You
Are Stuck: In Sand, Mud, Ice or Snow on page 4-52.To turn the system on or
off, press the TAS on/off
button located on the
instrument panel.
If you used the button to turn the system off, the traction
off light will come on and stay on. You can turn the
system back on at any time by pressing the button
again. The traction off light should go off.
If desired, you can change the TAS automatic
engagement feature so that the system will not come on
automatically when the engine is started. To do so:
1. Park the vehicle with the ignition off and the
transmission in PARK (P).
2. Turn the ignition to RUN; do not start the engine.
3. Apply the brake pedal, shift into NEUTRAL (N),
press the accelerator pedal to theoor and then
press the TAS on/off button and hold it down for at
least six seconds.
4. Release the TAS button and both pedals.
5. Turn off the ignition and wait a few seconds.
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At higher speeds the front and rear wheels will turn in
the same direction. This improves stability of the vehicle
during lane changes and sweeping turns.
_(4 Wheel Steer tow mode):When towing a
trailer the 4 wheel steer tow mode provides enhanced
stability allowing the trailer to follow the path of the
tow vehicle more closely, especially during lane
changes.
In this mode the system operates much like the 4 mode,
but is enhanced for trailer towing. It is recommended
for all types and weights of trailers.
To engage the 4 Wheel Steer tow mode, press the
button until the 4 and tow mode indicators light up on
the instrument panel. If the tow indicator isashing you
will have to center the steering wheel by turning it to
the left or right. While in the 4 wheel steer tow mode, it
is possible the steering wheel may be slightly off
center. For more information, seeTowing a Trailer on
page 4-61. Higher Speeds (40 m.p.h./64 km/h, and above)
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