traction control CHEVROLET BLAZER 1998 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine -
- cking Rear Axle (If Equipped)
11 you have this feature, your locking rear axle can give
you additional traction on snow, mud, ice, sand or
gravel. It works like a standard axle most of the time,
but when one of the rear wheels has
no traction and the
other does, this feature will allow the wheel with
traction to move the vehicle.
Four-wheel Drive (If Equipped)
Electronic Transfer Case (If Equipped)
If your four-wheel-drive
vehicle
has the electronic
transfer case,
the transfer
case switches are above the
radio controls.
If your vehicle has four-wheel drive, you can send your
engine’s driving power to all four wheels for extra
traction.
To shift out of two-wheel drive and into
four-wheel drive, push the
4HI or 4LO button on the
transfer case switch. You should
use 2HI for most
normal driving conditions. Use these switches to shift into and out
of four-wheel
drive.
You can choose among three driving settings:
2HI: This setting is for driving in most street and
highway situations. Your front axle
is not engaged in
two-wheel drive. When this lamp is lit, it is about
NOTICE:
Driving in the 4HI or 4LO positions for a long
time on dry or wet pavement could shorten the one-half as bright as the others.
life of your vehicle’s drivetrain. 4HI: This setting engages your front axle to help
drive your vehicle. Use 4HI when you need extra
traction, such
as on snowy or icy roads, or in most
off-road situations.
2-29

Downloaded from www.Manualslib.com manuals search engine If you have a manual transmission and you apply your
brakes or push the clutch pedal, the cruise control will
shut 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.
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.
Cruise control can be dangerous on Setting Cruise Control
I CAUTION:
I
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. Move the cruise control switch to ON.
2. Get up to the speed you want.
3. Press in the SET button
at the end
of the lever
and release it.
4. Take your foot off the accelerator pedal.
2-38

Downloaded from www.Manualslib.com manuals search engine 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.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control” 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.
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 “drive” 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.
4-9

Downloaded from www.Manualslib.com manuals search engine 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 slud, a driver can lose control of the vehicle.
Defensive drivers avoid most skids by taking reasonable
care suited
to existing conditions, and by not “overdriving”
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 and an acceleration skid are 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 “mirrored surface”
-- and slow down
when you have any doubt.
Remember: Any anti-lock brake system (ABS) helps
avoid only
the braking skid.
4-13

Downloaded from www.Manualslib.com manuals search engine Controlling your vehicle is the key to successful
off-road driving. One
of the best ways to control your
vehicle is to control your speed. Here are some things to
keep in mind. At higher speeds:
you approach things faster and you have less time to
scan the terrain for obstacles.
0 you have less time to react.
0 you have more vehicle bounce when you drive
over obstacles.
0 you'll need more distance for braking, especially
since you're on an unpc"=.?d surface.
Scanning the Terrain
Off-road driving can take you over many different kinds
of terrain. You need to be familiar with the terrain and
its many different features. Here are some things
to consider.
Sugace Conditions. Off-roading can take you over
hard-packed dirt, gravel, rocks, grass, sand, mud, snow
or ice. Each of these surfaces affects the steering,
acceleration and braking of your vehicle
in different
ways. Depending upon the kind
of surface you are on,
you may experience slipping, sliding, wheel spinning,
delayed acceleration, poor traction and longer
braking distances.
Sugace Obstacles . Unseen or hidden obstacles can be
hazardous.
A rock, log, hole, rut or bump can startle you if
you're not prepared for them. Often these obstacles are
hidden by grass, bushes, snow or even the
rise and fall of
the terrain itself. Here are some things to consider:
I
When you're driving off-road, bouncing and
quick changes in direction can easily throw
you
out of position. This could cause you to lose
control and crash.
So, whether you're driving on
or off the road, you and your passengers should
wear safety belts.
0 Does the travel take you uphill or downhill? (There's
0 Is the path ahead clear?
0 Will the surface texture change abruptly up ahead?
more discussion
of these subjects later.)
0 Will you have to stop suddenly or change
direction quickly?
4-17

Downloaded from www.Manualslib.com manuals search engine A CAUTION:
Getting out on the downhill (low) side of
stopped across an incline is dangerous. If the
vehicle rolls
over, you could be crushed or killed.
Always get out on the uphill (high) side of the
vehicle and stay well clear of the rollover path.
Driving in d, md, Snow or Ice
When you drive in mud, snow or sand, your wheels
won’t get good traction.
You can’t accelerate as quickly,
turning
is more difficult, and you’ll need longer
braking distances.
It’s best
to use a low gear when you’re in mud -- the
deeper
the mud, the lower the gear. In really deep mud,
the idea is to keep your vehicle moving so you don’t
get stuck. When you drive on
sand, you’ll sense a change
in wheel
traction. But it
will depend upon how loosely packed the
sand
is. On loosely packed sand (as on beaches or sand
dunes) your tires will tend to sink into the sand. This has
an effect
on steering, accelerating and braking. You may
want to reduce the air pressure
in your tires slightly
when driving on sand. This will improve traction.
Hard packed
snow and ice offer the worst tire traction.
On these surfaces, it’s very easy
to lose control. On wet
ice, for example, the traction is so poor that you will
have difficulty accelerating. And if
you do get moving,
poor steering and difficult braking can cause
you to slide
out of control.
Driving on frozen lakes, ponds or rivers can be
dangerous. Underwater springs, currents under
the ice, or sudden thaws can weaken the ice. Your
vehicle could fall through the ice and you and
your passengers could drown. Drive your vehicle
on safe surfaces only.
4-25

Downloaded from www.Manualslib.com manuals search engine 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
(if you have one). It
was developed for use on
your vehicle.
A 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.
6-45

Downloaded from www.Manualslib.com manuals search engine Treadwear Temperature -- A, B, C
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 -- A, B, C
The traction grades, from highest to lowest, are A, B,
and C, and they 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 braking (straight ahead) traction tests and does not
include cornering (turning) traction. 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.
6-46