wheel GMC YUKON 1999 Owner's Guide

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To wash the window, push in on the switch. Window
washer fluid will continue to spray until the switch is
released. The wiper will continue with three more wipes
and then return to the setting that was chosen before the
lever was pushed.
The rear window washer uses the same fluid bottle as
the front windshield washer. If the fluid level is low in
the washer fluid bottle, you may not be able to wash
your rear window. If you can wash your windshield, but
not your rear window, check the fluid level.
Cruise Control
With cruise control, you can
maintain a speed of about
25 mph (40 km/h) or more
without keeping your foot
on the accelerator.This can really help on long trips. Cruise control does
not work at speeds below 25 mph (40 km/h).
When you apply your brakes, cruise control shuts off.
CAUTION:

Cruise control can be dangerous where you
can't drive safely at a steady speed. So,
don't use your cruise control on winding
roads or in heavy traffic.

Cruise control can be dangerous on
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control. Don't
use cruise control on slippery roads.

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Exterior Lamps
Your parking/headlamp knob is on the driver's side of
your instrument panel.
Turn the knob clockwise, to the parking lamp symbol, to
turn on the following:

Parking Lamps

Sidemarker Lamps
Taillamps

License Plate Lamps

Instrument Panel Lights
Turn the knob clockwise again, to the master lighting
symbol, to turn on all the lamps listed as well as
the headlamps.
Turn the knob counterclockwise, to OFF, to turn off
your lamps. For additional information on headlamp
operation, see ªHeadlamp Delayº in the Index.
Turn the thumbwheel next to the knob up to adjust
instrument panel lights. Turn the thumbwheel up to the
first notch to return the radio display and gearshift
indicator LED display to full intensity when the
headlamps or parking lamps are on. To turn on the dome
lamps (with the vehicle doors closed) turn the
thumbwheel up to the second notch position.
You can switch your headlamps from high to low beam
by pulling on the turn signal/high
-beam lever.
A circuit breaker protects your headlamps. If you have
an electrical overload, your headlamps will flicker on
and off. Have your headlamp wiring checked right away
if this happens.

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The length of time that the headlamps stay on after the
ignition is turned off can be adjusted by pressing and
holding the HEADLAMP DELAY button. The
delay can be varied in five steps (0, 15, 30, 60 and
90 seconds). When the HEADLAMP DELAY button is
held in, the Light Emitting Diode (LED) on the mirror
will show five step changes in brightness. When the
LED is at its brightest the headlamp delay will be
90 seconds, and when it is most dim the delay will be
zero seconds.
Interior Lamps
Instrument Panel Intensity Control
The instrument panel intensity control is located next to
the parking/headlamp switch. Turn the thumbwheel up
to adjust the instrument panel lights. Turn the
thumbwheel up to the first notch to return the radio
display and gear shift indicator LED display to full
intensity when the headlamps or parking lamps are on.
To turn on the dome lamps (with the vehicle doors
closed) turn the thumbwheel up to the second
notch position.
Exit Lighting and Delayed Illumination
With this feature, your interior lamps will come on and
stay on for up to 25 seconds when entering the vehicle
and up to 5 seconds when leaving your vehicle.
When the doors are opened, the dome lamps will only
come on if the dome lamp button is in the out position.
When all doors are closed or the dome lamp button is
pressed in, the lamps will stay on for a short period of
time and will then fade out.
Dome Lamps
The dome lamps will come on when you open the doors.
You can also turn the dome lamps on by turning the
thumbwheel, located next to the parking/headlamps
switch knob, all the way up to the second notch. In this
position, the dome lamps will remain on whether the
doors are opened or closed.

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NOTICE:
Loading cargo that weighs more than 200 lbs.
(90.6 kg) on the luggage carrier may damage
your vehicle. When you carry large things, never
let them hang over the rear or the sides of your
vehicle. Load your cargo so that it rests on the
slats and does not scratch or damage the vehicle.
Put the cargo against the side rails and fasten it
securely to the luggage carrier.
Don't exceed the maximum vehicle capacity when
loading your vehicle. For more information on vehicle
capacity and loading, see ªLoading Your Vehicleº in
the Index.
To prevent damage or loss of cargo as you're driving,
check now and then to make sure the luggage carrier and
cargo are still securely fastened.
Be sure the cargo is properly loaded.
If small heavy objects are placed on the roof, place
the load in the area over the rear wheels. If you need
to, cut a piece of 3/8 inch plywood to fit inside the
crossrails and side rails to spread the load.

Tie the load to the crossrails or the side rail supports.
Use the crossrails only to keep the load from sliding.

If you need to carry long items, move the crossrails
as far apart as they will go. Tie the load to the
crossrails and tie loops. Also tie the load to the
bumpers. Do not tie the load so tightly that the
crossrails or side rails are damaged.

For the purpose of wind noise reduction, locate
the front crossrail approximately 18 to 24 inches
(46 cm to 58 cm) rearward of the front supports.

After moving the crossrails, be sure to tighten all the
slider screws.
Your vehicle has a Center High
-Mounted Stoplamp
(CHMSL) located above the tailgate glass or above the
rear load doors.
If items are loaded on the roof of the vehicle, care should
be taken not to block or damage the CHMSL unit.

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2-80 Security Light
This light will come on
briefly when you turn the
key to START.
The light will stay on until the engine starts. If the light
flashes, the Passlock

System has entered a tamper
mode. If the vehicle fails to start, see ªPasslockº in
the Index.
If the light comes on continuously while driving and
stays on, there may be a problem with the Passlock
System. Your vehicle will not be protected by Passlock,
and you should see your GM dealer.
Service Four-Wheel Drive Warning Light
Your vehicle is equipped with an Automatic
Four
-Wheel-Drive Transfer Case. It has a computer
which controls the four
-wheel-drive system.
This light should come on
briefly when you turn on the
ignition, as a check to show
you it is working.
If the SERVICE 4WD light comes on, there may be a
problem with the Automatic Four
-Wheel-Drive system
and service is required. Malfunctions can be indicated
by the system before any problem is apparent, which
may prevent serious damage to the vehicle. This system
is also designed to assist your service technician in
correctly diagnosing a malfunction.

4-
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Section 4 Your Driving and the Road
Here you'll find information about driving on different kinds of roads and in varying weather conditions. We've also
included many other useful tips on driving.
4
-2 Defensive Driving
4
-3 Drunken Driving
4
-6 Control of a Vehicle
4
-6 Braking
4
-9 Steering
4
-11 Off-Road Recovery
4
-12 Passing
4
-13 Loss of Control
4
-14 Off-Road Driving with Your
Four
-Wheel-Drive Vehicle
4
-28 Driving at Night4
-30 Driving in Rain and on Wet Roads
4
-33 City Driving
4
-34 Freeway Driving
4
-35 Before Leaving on a Long Trip
4
-36 Highway Hypnosis
4
-36 Hill and Mountain Roads
4
-38 Winter Driving
4
-42 Recreational Vehicle Towing
4
-43 Loading Your Vehicle
4
-45 Towing a Trailer

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Here's how anti-lock works. Let's say the road is wet.
You're driving safely. Suddenly an animal jumps out in
front of you.
You slam on the brakes. Here's what happens with ABS.
A computer senses that wheels are slowing down. If one
of the wheels is about to stop rolling, the computer will
separately work the brakes at each front wheel and at
both rear wheels.The anti
-lock system can change the brake pressure faster
than any driver could. The computer is programmed to
make the most of available tire and road conditions.
You can steer around the obstacle while braking hard.
As you brake, your computer keeps receiving updates on
wheel speed and controls braking pressure accordingly.

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Remember: Anti-lock doesn't change the time you need
to get your foot up to the brake pedal or always decrease
stopping distance. If you get too close to the vehicle in
front of you, you won't have time to apply your brakes
if that vehicle suddenly slows or stops. Always leave
enough room up ahead to stop, even though you have
anti
-lock brakes.
Using Anti
-Lock
Don't pump the brakes. Just hold the brake pedal down
firmly and let anti
-lock work for you. You may feel the
brakes vibrate, or you may notice some noise, but
this is normal. Your anti
-lock brakes work at all
times
-- whether you are in two-wheel drive or
four
-wheel drive.
Braking in Emergencies
With anti-lock, you can steer and brake at the same
time. In many emergencies, steering can help you more
than even the very best braking.
Steering
Power Steering
If you lose power steering assist because the engine
stops or the system is not functioning, you can steer but
it will take much more effort.
Speed-Sensitive Steering
This system varies the amount of steering effort
proportionate to your vehicle speed. Steering is easier at
lower speeds for maneuvering and parking ease. As your
vehicle speed increases, the steering effort also
increases. At highway speeds, the amount of steering
effort is increased for vehicle control and stability.
Steering Tips
Driving on Curves
It's important to take curves at a reasonable speed.
A lot of the ªdriver lost controlº accidents mentioned on
the news happen on curves. Here's why:
Experienced driver or beginner, each of us is subject to
the same laws of physics when driving on curves. The
traction of the tires against the road surface makes it
possible for the vehicle to change its path when you turn
the front wheels. If there's no traction, inertia will keep
the vehicle going in the same direction. If you've ever
tried to steer a vehicle on wet ice, you'll understand this.
The traction you can get in a curve depends on the
condition of your tires and the road surface, the angle at
which the curve is banked, and your speed. While you're
in a curve, speed is the one factor you can control.

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Suppose you're steering through a sharp curve. Then you
suddenly accelerate. Both control systems
-- steering and
acceleration
-- have to do their work where the tires meet
the road. Adding the sudden acceleration can demand too
much of those places. You can lose control.
What should you do if this ever happens? Ease up on the
accelerator pedal, steer the vehicle the way you want it
to go, and slow down.
Speed limit signs near curves warn that you should
adjust your speed. Of course, the posted speeds are
based on good weather and road conditions. Under less
favorable conditions you'll want to go slower.
If you need to reduce your speed as you approach a
curve, do it before you enter the curve, while your front
wheels are straight ahead.
Try to adjust your speed so you can ªdriveº through the
curve. Maintain a reasonable, steady speed. Wait to
accelerate until you are out of the curve, and then
accelerate gently into the straightaway.
Steering in Emergencies
There are times when steering can be more effective than
braking. For example, you come over a hill and find a truck
stopped in your lane, or a car suddenly pulls out from
nowhere, or a child darts out from between parked cars and
stops right in front of you. You can avoid these problems by
braking
-- if you can stop in time. But sometimes you
can't; there isn't room. That's the time for evasive
action
-- steering around the problem.
Your vehicle can perform very well in emergencies like
these. First apply your brakes. (See ªBraking in
Emergenciesº earlier in this section.) It is better to
remove as much speed as you can from a possible
collision. Then steer around the problem, to the left or
right depending on the space available.

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An emergency like this requires close attention and a
quick decision. If you are holding the steering wheel at
the recommended 9 and 3 o'clock positions, you can
turn it a full 180 degrees very quickly without removing
either hand. But you have to act fast, steer quickly, and
just as quickly straighten the wheel once you have
avoided the object.
The fact that such emergency situations are always
possible is a good reason to practice defensive driving at
all times and wear safety belts properly.
Off-Road Recovery
You may find that your right wheels have dropped off the
edge of a road onto the shoulder while you're driving.
If the level of the shoulder is only slightly below the
pavement, recovery should be fairly easy. Ease off the
accelerator and then, if there is nothing in the way, steer so
that your vehicle straddles the edge of the pavement. You
can turn the steering wheel up to one
-quarter turn until the
right front tire contacts the pavement edge. Then turn your
steering wheel to go straight down the roadway.