traction control OLDSMOBILE ALERO 1999 Owners Manual

yellowblue
2-37
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.
If your vehicle is in cruise control when the enhanced
traction system begins to limit wheel spin, the cruise
control will automatically disengage. (See ªEnhanced
Traction Systemº in the Index.) When road conditions
allow you to safely use it again, you may turn the cruise
control back on.Setting Cruise Control
CAUTION:
If you leave your cruise control switch on when
you're not using cruise, you might hit a button
and go into cruise when you don't want to. You
could be startled and even lose control. Keep the
cruise control switch off until you want to use it.
1. Press the cruise control ON OFF button. The
indicator light on the button will turn on.
2. Get up to the speed you want.
3. Press the CST SET button and release it. The
CRUISE light on the instrument panel will come on.
4. Take your foot off the accelerator pedal.
ProCarManuals.com

yellowblue
2-51
Your instrument panel is designed to let you know at a glance how your vehicle is running. You'll know how fast
you're going, how much fuel you're using, and many other things you'll need to drive safely and economically.
The main components of your instrument panel are:
A. Fuse Panels
B. Vents
C. Instrument Cluster
D. Hazard Warning Button
E. Audio System
F. Climate Control
G. Auxiliary Power Accessory Outlet
H. Cigarette Lighter/Power Accessory Outlet
I. Parking BrakeJ. Transaxle Shift Lever
K. Enhanced Traction System Switch
L. Windshield Wiper/Washer Lever
M. Ignition Switch
N. Cruise Control Switches (If Equipped)
O. Tilt Wheel Lever
P. Hood Release Handle
Q. Turn Signal/Multifunction Lever
R. Instrument Panel Intensity Control
ProCarManuals.com

yellowblue
2-59
The Enhanced Traction System warning light may come
on for the following reasons:

If you turn the system off by pressing the ETS button
on the center console near the gear shift lever, the
warning light will come on and stay on. To turn the
system back on, press the button again. The warning
light should go off. (See ªEnhanced Traction
Systemº in the Index for more information.)

The warning light will come on when you set your
parking brake with the engine running, and it will
stay on if your parking brake doesn't release fully.
If the system is turned on and the warning light stays
on after your parking brake is fully released, it
means there's a problem with the system.

If the traction control system is affected by an
engine
-related problem, the system will turn off and
the warning light will come on.
If the Enhanced Traction System warning light comes
on and stays on for an extended period of time when the
system is turned on and the parking brake is fully
released, your vehicle needs service.
Enhanced Traction System Active Light
When your Enhanced Traction System is limiting wheel
spin, this light will come on. Slippery road conditions
may exist if the Enhanced Traction System active light
comes on, so adjust your driving accordingly.
The light will stay on for a few seconds after the
Enhanced Traction System stops limiting wheel spin.
This light will also come on when the anti
-lock brake
system is working.
The Enhanced Traction System active light also comes
on briefly when you turn the ignition key to ON. If the
light doesn't come on then, have it fixed so it will be
there to tell you when the system is active.
ProCarManuals.com

yellowblue
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 feel a
slight brake pedal pulsation or notice some noise, but
this is normal.
Enhanced Traction System
Your vehicle has the four-speed automatic transaxle
and an Enhanced Traction System (ETS) 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 reduces
engine power and may also upshift the transaxle to limit
wheel spin.
This light will come on
when your Enhanced
Traction System is limiting
wheel spin. See ªEnhanced
Traction System Active
Lightº in the Index. You
may feel or hear the system
working, but this is normal.
This light will also come on when the anti
-lock brake
system is working.
If your vehicle is in cruise control when the enhanced
traction 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.)
The Enhanced Traction System operates in all transaxle
shift lever positions. But the system can upshift the
transaxle only as high as the shift lever position you've
chosen, so you should use the lower gears only when
necessary. See ªAutomatic Transaxleº in the Index.
ProCarManuals.com

yellowblue
4-11 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.
Variable Effort Steering (If Equipped)
This steering system provides lighter steering effort for
parking and at low vehicle speeds. Steering effort will
increase at higher speeds for improved road feel.
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 ªEnhanced
Traction Systemº in the Index.
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.
ProCarManuals.com

yellowblue
4-15
Loss of Control
Let's review what driving experts say about what
happens when the three control systems (brakes, steering
and acceleration) don't have enough friction where the
tires meet the road to do what the driver has asked.
In any emergency, don't give up. Keep trying to
steer and constantly seek an escape route or area of
less danger.
Skidding
In a skid, a driver can lose control of the vehicle.
Defensive drivers avoid most skids by taking reasonable
care suited to existing conditions, and by not
ªoverdrivingº those conditions. But skids are
always possible.
The three types of skids correspond to your vehicle's
three control systems. In the braking skid, your wheels
aren't rolling. In the steering or cornering skid, too
much speed or steering in a curve causes tires to slip and
lose cornering force. And in the acceleration skid, too
much throttle causes the driving wheels to spin.
A cornering skid is best handled by easing your foot off
the accelerator pedal.
If you have the Enhanced Traction System, remember:
It helps avoid only the acceleration skid.If you do not have the Enhanced Traction System, or if
the 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.
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.
ProCarManuals.com

yellowblue
6-40
CAUTION:
Mixing tires could cause you to lose control while
driving. If you mix tires of different sizes or types
(radial and bias
-belted tires), the vehicle may not
handle properly, and you could have a crash.
Using tires of different sizes may also cause
damage to your vehicle. Be sure to use the same
size and type tires on all wheels.
It's all right to drive with your compact spare,
though. It was developed for use on your vehicle.
CAUTION:
If you use bias-ply tires on your vehicle, the
wheel rim flanges could develop cracks after
many miles of driving. A tire and/or wheel could
fail suddenly, causing a crash. Use only radial
-ply
tires with the wheels on your vehicle.
Uniform Tire Quality Grading
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance. (This
applies only to vehicles sold in the United States.) The
grades are molded on the sidewalls of most passenger
car tires. The Uniform Tire Quality Grading system does
not apply to deep tread, winter
-type snow tires,
space
-saver or temporary use spare tires, tires with
nominal rim diameters of 10 to 12 inches (25 to 30 cm),
or to some limited
-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to Federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
ProCarManuals.com

yellowblue
6-41
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and a half
(1 1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends
upon the actual conditions of their use, however, and
may depart significantly from the norm due to variations
in driving habits, service practices and differences in
road characteristics and climate.
Traction
-- AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight
-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.Temperature
-- A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance
on the laboratory test wheel than the minimum required
by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
ProCarManuals.com

yellowblue
9-5
Ignition Positions 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transaxle Lock Check 7-16 . . . . . . . . . . . . . . . . . . . .
Illuminated Entry/Exit 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation, Tire 6-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview Mirror 2-44 . . . . . . . . . . . . . . . . .
Inspections 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake System 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling System 7-17 . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Boot 7-17 . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Seal 7-17 . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator and Heater Hose 7-17 . . . . . . . . . . . . . . . . . . . . . .
Steering 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle System 7-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6-53, 6-54, 6-55 . . . . . . . . . . . . . . . . . . . . . . . .
Intensity Control 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Lamps 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack, Tire 5-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinders Service 7-14 . . . . . . . . . . . . . . . . . . . . .
Keys 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels
Certification 4-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-52 . . . . . . . . . . . . . . . . . . . . . Tire
-Loading Information 4-32 . . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-52 . . . . . . . . . . . . . . . . . . .
Lamps 2-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior 2-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirror Reading 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Reminder 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle with the Engine Running 2-28 . . . . . . .
Lights
Air Bag Readiness 1
-25, 2-55 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-57, 4-7 . . . . . . . . . . . .
Brake System Warning 2-52, 6-25 . . . . . . . . . . . . . . . . . . . .
Change Oil 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Indicator 2-55 . . . . . . . . . . . . . . . . . . . . . .
Check Engine 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Oil Pressure Light 2-64 . . . . . . . . . . . . . . . . . . . . . .
Enhanced Traction System Active 2-59 . . . . . . . . . . . . . . . .
Enhanced Traction System Warning 2-58 . . . . . . . . . . . . . .
Interior 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Coolant Warning 2-60, 6-21 . . . . . . . . . . . . . . . . . . . .
Low Oil 2-65, 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Tire Pressure 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Wash 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Reminder 1-8, 2-54 . . . . . . . . . . . . . . . . . . . . . .
Security 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Vehicle Soon 2-67 . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-32 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock Out Switch 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ProCarManuals.com