engine CADILLAC DEVILLE 2002 8.G Service Manual

2-110
TOP SPEED FUEL CUT-OFF - 111 : This message
will appear when the Powertrain Control Module (PCM)
detects that the maximum speed for your vehicle has
been reached. The speed of your vehicle will surge as
the fuel supply is cut off. Your vehicle's top speed is
based on the top speed rating of the tires. This ensures
that your vehicle stays in a safe operating range for
the tires.
TRACTION ENGAGED
- 91 : When your traction
control system is limiting wheel spin, the TRACTION
ENGAGED message will be displayed. Slippery road
conditions may exist if this message is displayed, so
adjust your driving accordingly. This message will stay
on for a few seconds after the traction control system
stops limiting wheel spin.
TRACTION OFF
- 89: This message will be displayed
after the traction control system has been turned off
using the TRAC ON/OFF button on the center console.
TRACTION READY
- 90: This message informs
the driver that the traction control system is available.
Pressing the TRAC ON/OFF button on the center
console once turns the traction control system off;
pressing the button again turns the system back on.
This message will automatically disappear from the
display after five seconds.TRACTION SUSPENDED
- 56: This message
displays when the traction control system has been
temporarily shut off because your vehicle's brakes have
overheated. This message does not indicate a problem
with your vehicle's traction control system. After a few
minutes, the traction control system will be available
again and the TRACTION READY message
will appear.
TRANS HOT IDLE ENGINE
- 112: This message
indicates that the transaxle fluid in your vehicle is too
hot. Stop and allow your vehicle to idle until it cools
down or until this message is removed.
TRUNK OPEN
- 24: This message indicates that the
trunk is open when the ignition is on.
TURN SIGNAL ON
- 20: If you drive your vehicle
for more than a mile with a turn signal on, this message
will appear as a reminder to turn off the turn signal.
A multiple chime will sound when this message
is displayed.
VEHICLE OVERSPEED
- 52: This message is
displayed when the vehicle speed exceeds a certain limit
as required by some export countries. A continuous
chime will sound when this message is displayed.

2-128
Oil Life Indicator
This feature lets you know when to change the engine
oil. It's based on the engine oil temperatures and your
driving patterns.To see the display, press the INFO button several times until
ENGINE OIL LIFE appears. If you see 99% ENGINE OIL
LIFE, 99 percent of your current oil life remains.
The DIC may display a CHANGE ENGINE OIL
message. Always keep a written record of the mileage and
date when you changed your oil. For more information,
see ªMaintenance Scheduleº in the Index. If you see
CHANGE ENGINE OIL, it means the oil life is gone and
you should change the oil right away. The system doesn't
check how much oil you have, so you'll still have to check
for that. To see how, see ªEngine Oilº in the Index.
When the oil is changed, you'll need to reset the system.
See ªOil Life Indicator, How to Resetº in the Index.

3-5
To avoid blowing cold air in cold weather, the system
will start at reduced fan speeds until warm air is
available. The length of reduction depends on the
outside air temperature, engine coolant temperature
or the time since the engine was last started. As the
coolant warms up, the fan speed will gradually increase
and air will flow from the floor outlets, with some
airflow to the windshield to prevent fogging under most
normal conditions.
If you select defrost mode or a fan speed, this function
will be skipped and the system will be in manual mode.
If you leave your vehicle, the system will recall the
control setting the next time you start your engine,
except for recirculation and defrost.Electronic Solar Sensor
The sensor monitors the sun's solar radiation. It is located
on top of the instrument panel near the windshield.
When the climate control system is in AUTO, the system
uses this information to automatically make the necessary
temperature and airflow adjustments to maintain your
comfort. The climate control system may supply cooler air
to one side of your vehicle, if that side is facing the sun.
Be sure not to cover the sensor on top of the instrument
panel. If you do, it will not work properly.

3-12
Audio Systems
Your audio system has been designed to operate easily
and give years of listening pleasure. You will get the
most enjoyment out of it if you acquaint yourself with it
first. Find out what your audio system can do and how
to operate all of its controls to be sure you're getting the
most out of the advanced engineering that went into it.
Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, you can play your audio
system even after the ignition is turned off. See
ªRetained Accessory Powerº in the Index.
Setting the Clock
Press and hold HR or MN until the time display begins
to change. Release the button as you get close to the
correct time. The time may be set anytime the clock is
displayed. There is a two
-second delay before the clock
goes into time
-set mode.
AM-FM Stereo with Cassette Tape and
Compact Disc Player
Playing the Radio
PWR (Power): Press this knob to turn the system on
and off.
VOL (Volume): Turn this knob clockwise to increase
volume. Turn it counterclockwise to decrease volume.
HR (Hour) or MN (Minute): Display the time with the
ignition off by pressing one of these buttons.

3-33
Cellular Phone Usage
Cellular phone usage may cause interference with your
vehicle's radio. This interference may occur when
making or receiving phone calls, charging the phone's
battery or simply having the phone ªonº. This
interference is described as an increased level of static
while listening to the radio. If you notice static while
listening to the radio, unplug the cellular phone and turn
if off.
Weather Band (If Equipped)
Weather band is restricted to speech and the audio
quality is not as good as with the AM or FM bands.
Depending on location, the radio should receive one or
two channels.
Tips About Your Audio System
Hearing damage from loud noise is almost undetectable
until it is too late. Your hearing can adapt to higher
volumes of sound. Sound that seems normal can be loud
and harmful to your hearing. Take precautions by
adjusting the volume control on your radio to a safe
sound level before your hearing adapts to it.To help avoid hearing loss or damage do the following:
1. Adjust the volume control to the lowest setting.
2. Increase volume slowly until you hear comfortably
and clearly.
NOTICE:
Before you add any sound equipment to your
vehicle
-- like a tape player, CB radio, mobile
telephone or two
-way radio -- be sure you can
add what you want. If you can, it's very
important to do it properly. Added sound
equipment may interfere with the operation of
your vehicle's engine, radio or other systems, and
even damage them. Your vehicle's systems may
also interfere with the operation of sound
equipment that has been added improperly.
So, before adding sound equipment, check with
your dealer and be sure to check federal rules
covering mobile radio and telephone units.

4-7
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 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're driving, brake
normally but don't 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.
Anti-Lock Brake System (ABS)
Your vehicle has anti-lock brakes. ABS is an advanced
electronic braking system that will help prevent a
braking skid.
When you start your engine and begin to drive away,
your anti
-lock brake system will check itself. You may
hear a momentary motor or clicking noise while this test
is going on, and you may even notice that your brake
pedal moves a little. This is normal.
If there's a problem with the
anti
-lock brake system, this
warning light will stay on.
See ªAnti
-Lock Brake
System Warning Lightº in
the Index.

4-9
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 hear the
anti
-lock pump or motor operate, and feel the brake
pedal pulsate, but this is normal.
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.
Traction Control System
Your vehicle has a traction control system 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 front wheels are spinning or
beginning to lose traction. When this happens, the
system works the front brakes and reduces engine power
to limit wheel spin.
The TRACTION ENGAGED message will display on
the Driver Information Center when the traction control
system is limiting wheel spin. See ªDriver Information
Center Messagesº in the Index. You may feel or hear
the system working, but this is normal.
If your vehicle is in cruise control when the traction
control system begins to limit wheel spin, the cruise
control will automatically disengage. When road
conditions allow you to safely use it again, you may
reengage the cruise control. See ªCruise Controlº in
the Index.

4-11
The traction control system monitors the front brake
rotor temperature. If the traction control system comes
on while the front brake rotors are hot due to heavy use
of braking or previous traction control, the TRACTION
SUSPENDED message will be displayed
-- but the
system won't turn off right away. It will wait until
there's no longer a current need to limit wheel spin. The
TRACTION READY message should appear when the
brake rotors are no longer hot and the traction control
system will resume normal operation.
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.
Magnetic Speed Variable Assist Steering
System
This system continuously adjusts the effort you feel
when steering at all vehicle speeds. It provides ease
when parking yet a firm, solid feel at highway speeds.
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.
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. Refer to ªTraction
Control Systemº in the Index.

4-16
A cornering skid is best handled by easing your foot off
the accelerator pedal.
Remember: Any traction control system helps avoid
only the acceleration skid.
If your traction control system is off, then an
acceleration skid is also best handled by easing your
foot off the accelerator pedal.
If your vehicle starts to slide, ease your foot off the
accelerator pedal and quickly steer the way you want the
vehicle to go. If you start steering quickly enough, your
vehicle may straighten out. Always be ready for a
second skid if it occurs.
If you have Stabilitrak

, you may see the STABILITY
SYS ENGAGED message on the Driver Information
Center. See ªStability Sys Engaged Messageº in
the Index.Of course, traction is reduced when water, snow, ice,
gravel or other material is on the road. For safety, you'll
want to slow down and adjust your driving to these
conditions. It is important to slow down on slippery
surfaces because stopping distance will be longer and
vehicle control more limited.
While driving on a surface with reduced traction, try
your best to avoid sudden steering, acceleration or
braking (including engine braking by shifting to a lower
gear). Any sudden changes could cause the tires to slide.
You may not realize the surface is slippery until your
vehicle is skidding. Learn to recognize warning
clues
-- such as enough water, ice or packed snow on
the road to make a ªmirrored surfaceº
-- and slow down
when you have any doubt.
Remember: Any anti
-lock brake system (ABS) helps
avoid only the braking skid.

4-20
Hydroplaning doesn't happen often. But it can if your
tires do not have much tread or if the pressure in one or
more is low. It can happen if a lot of water is standing on
the road. If you can see reflections from trees, telephone
poles or other vehicles, and raindrops ªdimpleº the
water's surface, there could be hydroplaning.
Hydroplaning usually happens at higher speeds. There
just isn't a hard and fast rule about hydroplaning.
The best advice is to slow down when it is raining.
Driving Through Deep Standing Water
NOTICE:
If you drive too quickly through deep puddles or
standing water, water can come in through your
engine's air intake and badly damage your
engine. Never drive through water that is slightly
lower than the underbody of your vehicle. If you
can't avoid deep puddles or standing water, drive
through them very slowly.
Driving Through Flowing Water
CAUTION:
Flowing or rushing water creates strong forces. If
you try to drive through flowing water, as you
might at a low water crossing, your vehicle can be
carried away. As little as six inches of flowing
water can carry away a smaller vehicle. If this
happens, you and other vehicle occupants could
drown. Don't ignore police warning signs, and
otherwise be very cautious about trying to drive
through flowing water.
Some Other Rainy Weather Tips

Besides slowing down, allow some extra following
distance. And be especially careful when you pass
another vehicle. Allow yourself more clear room
ahead, and be prepared to have your view restricted
by road spray.

Have good tires with proper tread depth. See ªTiresº
in the Index.