light CHEVROLET BLAZER 1993 Repair Manual

Hydroplaning doesn’t happen often. But it can if your tires haven’t 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 “dimple” the water’s s\
urface, there could be hydroplaning.
Hydroplaning usually happens on higher speed roads. There just isn’t a hard
and fast rule about hydroplaning. The best advice is to slow \
down when it is
raining, and be careful.
Some Other Rainy Weather Tips
Turn on your headlights-not just your parking lights-to help ma\
ke you
more visible to others.
Look for hard-to-see vehicles coming from behind. You may want to use
your headlights even in daytime
if it’s raining hard.
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.
If the road spray is so heavy you are actually blinded, drop back.
Don’t pass until conditions improve. Going more slowly is be\
tter than
having an accident.
Use your defogger
if it helps.
Have good tires with proper tread depth. (See “Tires” in\
the Index.)
4-39

Your Driving and the Road
~~ ~
Driving in Fog, Mist and Haze
1
AN459006
Fog can occur with high humidity or heavy frost. It can be so mild that you
can see through it for several hundred feet (meters). Or
it might be so thick
that you can see only a few feet (meters) ahead. It may co\
me suddenly to
an otherwise clear road. And it can be a major hazard.
When you drive into a fog patch, your visibility will be redu\
ced quickly. The biggest dangers are striking the vehicle ahead or being struck \
by the one
behind. Try to “read” the fog density down the road. If the vehicle ahead
starts to become less clear
or, at night, if the taillights are harder to see, the
fog is probably thickening. Slow down to give traffic behind you a ch\
ance to
slow down. Everybody then has a better chance to avoid hitting the vehicle
ahead.
A patch of dense fog may extend only for a few feet (meters) or for miles
(kilometers); you can’t really tell while you’re in
it. You can only treat the
situation with extreme care.
One common fog condition-sometimes called mist or ground fog-can
happen in weather that seems perfect, especially at night or in the early
morning in valley and low, marshy areas. You can be suddenly enveloped in
thick, wet haze that may even coat your windshield. You can often sp\
ot these
fog patches
or mist layers with your headlights. But sometimes they can be
waiting for you as you come over a hill
or dip into a shallow valley. Start
your windshield wipers and washer to help clear accumulated road dir\
t. Slow
down carefully.
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Tips
You’ll
If you
on Driving in Fog
get caught in fog, turn your headlights on low beam, even in daytime.
see-and be seen-better. Use your fog lights
if your vehicle has them.
Don’t use your high beams. The light will bounce
off the water droplets that
make up fog and reflect back at you.
Use your defogger. In high humidity, even
a light buildup of moisture on the
inside of the glass
will cut down on your already limited visibility. Run your
windshield wiper and washer occasionally. Moisture can build up \
on the
outside glass, and what seems to be fog may actually be moist\
ure on the
outside of your windshield.
Treat dense fog as an emergency. Try to find a place
to pull off the road. Of
course you want to respect another’s property, but you might\
need to put
something between you and moving vehicles-space, trees, telephone\
poles,
a private driveway, anything that removes you from other traffi\
c.
If visibility is near zero and you must stop but are unsure whet\
her you are
away from the road, turn your lights
on, start your hazard warning flasher,
and sound your horn at intervals or when you hear approaching \
traffic.
Pass other vehicles in fog only
if you can see far enough ahead to pass
safely. Even then, be prepared to delay your pass if you susp\
ect the fog is
worse up ahead.
If other vehicles try to pass you, make it easy for them.
4-41

Your Driving and the Road
City Driving
AN460004
One of the biggest problems with city streets is amount of traffic on them.
You’ll want to watch out for what the other drivers are doing and pay
attention to traffic signals.
Here are ways to increase your safety in city driving:
e
e
e
e
Know the best way to get to where you are going. Try not to drive
around trying to pick out a familiar street or landmark. Get \
a city map
and plan your trip into an unknown part of the city just as you would for
a cross-country trip.
Try
to use the freeways that rim and crisscross most large cities. Yo\
u’ll
save time and energy. (See the next section, “Freeway Drivi\
ng.”)
Treat
a green light as a warning signal. A traffic light is there because
the corner
is busy enough to need it. When a light turns green, and just
before you start
to move, check both ways for vehicles that have not
cleared the intersection or may be running the red light.
Obey all posted speed limits.
But remember that they are for ideal road,
weather and visibility conditions. You may need to drive below the
posted limit in bad weather or when visibility is especially poor.
Pull to the right (with care) and stop clear
of intersections when you see
or hear emergency vehicles.
4-42

Freeway Driving
Mile for mile, freeways (also called thruways, parkways, expres\
sways,
turnpikes, or superhighways) are the safest of all roads. But \
they have their
own special rules.
The most important advice on freeway driving is: Keep up with \
traffic and keep to the right. Drive at the same speed most of the other drivers are
driving. Too-fast or too-slow driving breaks a smooth traffic f\
low. Treat the left
lane on a freeway as a passing lane.
Entering the Freeway
At the entrance there is usually a ramp that leads to the freeway. If you have
a clear view of the freeway as you drive along the entrance ramp, you
should begin to check traffic. Try to determine where you expect to blend
with the flow.
If traffic is light, you may have no problem. But if it is heavy,
find a gap as you move along the entering lane and time your approach. Try
to merge into the gap at close to the prevailing speed. Switch on your turn
signal, check your rearview mirrors as you move along, and gla\
nce over your
shoulder as often as necessary. Try to blend smoothly with the traffic flow.
Driving on the Freeway
Once you are on the freeway, adjust your speed to the posted limit or to the
prevailing rate
if it’s slower. Stay in the right lane unless you want to pass. If
you are on a two-lane freeway, treat the right lane as the slow lane and the
left lane as the passing lane.
If you are on a three-lane freeway, treat the
right lane as the slower-speed through lane, the middle lane as the
higher-speed through lane, and the left lane as the passing la\
ne.
4-43

Your Driving and the Road
Before changing lanes, check your rearview mirrors. Then use yo\
ur turn
signal. Just before you leave the lane, glance quickly over yo\
ur shoulder to
make sure there isn’t another vehicle in your “blind” spot.
If you are moving from an outside to a center lane on a freeway\
having
more than two lanes, make sure another vehicle isn’t about to move into the
same spot. Look at the vehicles two lanes over and watch for \
telltale signs:
turn signals flashing, an increase in speed, or moving toward \
the edge of the
lane. Be prepared to delay your move.
Once you are moving on the freeway, make certain you allow a \
reasonable
following distance. Expect to move slightly slower at night.
Leaving the Freeway
When you want to leave the freeway, move to the proper lane \
well in
advance. Dashing across lanes at the last minute is dangerous. \
If you miss
your exit do not, under any circumstances, stop and back up. \
Drive
on to the
next exit.
At each exit point is a deceleration lane. Ideally it should be long enough for
you to enter it at freeway speed (after signaling, of course) and then do your
braking before moving onto the exit ramp. Unfortunately, not al\
l deceleration
lanes are long enough-some are too short for
all the braking. Decide when
to start braking.
If you must brake on the through lane, and if there is traffic
close behind you, you can allow a little extra time and flash\
your brake lights
(in addition to your turn signal) as extra warning that you are about to slow
down and exit.
The exit ramp can be curved, sometimes quite sharply. The exit\
speed
is
usually posted. Reduce your speed according to your speedometer, not to
your sense of motion. After driving for any distance at higher speeds, you
may tend to think you are going slower than you actually are. For example,
40 mph (65 km/h) might seem like only 20 mph (30 kmlh). Obviously, this
could lead to serious trouble on a ramp designed for
20 mph (30 km/h)!
Driving a Long Distance
Although most long trips today are made on freeways, there are\
still many
made on regular highways.
Long-distance driving on freeways and regular highways is the same in some
ways. The trip has to be planned and the vehicle prepared, yo\
u drive at higher-than-city speeds, and there are longer turns behind the wheel. You’ll
enjoy your trip more
if you and your vehicle are in good shape. Here are
some tips for
a successful long trip.
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Before Leaving on a Long Trip
Make sure you’re ready. Try to be well rested. If you must start when you’re
not fresh-such as after a day’s work-don’t plan to make too many miles
that first part of the journey. Wear comfortable clothing and shoes you can
easily drive in.
Is your vehicle ready for a long trip? If you keep it serviced and maintained,
it’s ready to go. If it needs service, have it done before starting out. Of
course, you’ll find experienced and able service experts
in your vehicle’s
dealerships all across North America. They’ll be ready and w\
illing to help
if
you need it.
Here are some things you can check before a trip:
e
e
On
Windshield Washer Fluid: Is the reservoir full? Are all windows clean
inside and outside?
Wiper Blades: Are they in good shape?
Fuel, Engine Oil, Other Fluids: Have you checked all levels?
Lights: Are they all working? Are the lenses clean?
Tires: They are vitally important to a safe, trouble-free trip. Is the tread
good enough for long distance driving? Are the tires all inflated to the
recommended pressure?
Weather Forecasts: What’s the weather outlook along your route?
Should you delay your trip a short time to avoid a major storm system?
Maps: Do you have up-to-date maps?
the Road
Unless you are the only driver, it is good to share the driving task with
others. Limit turns behind the wheel to about
100 miles (160 km) or two
hours at a sitting. Then, either change drivers or stop for s\
ome refreshment
like coffee, tea or soft drinks and some limbering up. But do stop and move
around. Eat lightly along the way. Heavier meals tend
to make some people
sleepy.
On two-lane highways or undivided multilane highways that do not have
controlled access, you’ll want to watch for some situations not usually found
on freeways. Examples are: stop signs and signals, shopping cen\
ters with
direct access to the highway, no passing zones and school zones, vehicles
turning left and right
off the road, pedestrians, cyclists, parked vehicles, and
even animals.
4-45

Your Driving and the Road
Highway Hypnosis
Is there actually such a condition as “highway hypnosis?” Or \
is it just plain
falling asleep at the wheel? Call
it highway hypnosis, lack of awareness, or
whatever.
There is something about an easy stretch of road with the sam\
e scenery, along with the hum of the tires on the road, the drone of the engine, and the
rush
of the wind against the vehicle that can make you sleepy. Don’\
t let it
happen to you! If it does, your vehicle can leave the road in less than a
second,
and you could crash and be injured.
What can you do about highway hypnosis? First, be aware that
it can
happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a comfortably \
cool interior.
Keep your eyes moving. Scan the road ahead and to the sides. Check
your rearview mirrors frequently and your instruments from time \
to time.
This can help you avoid a fixed stare.
Wear good sunglasses in bright light. Glare can cause drowsiness. But
don’t wear sunglasses at night. They will drastically reduce your overall
vision at the very time you need all the seeing power you have.
If you get sleepy, pull off the road into a rest, service, or parking area
and take a nap, get some exercise, or both. For safety, treat\
drowsiness
on the highway as an emergency.
As in any driving situation, keep pace with traffic and allow ade\
quate
following distances.
4-46

Winter Driving
r
AM480003
Here are some tips for winter driving.
Have your vehicle in good shape for winter. Be sure your engi\
ne coolant
mix is correct.
Snow tires can help in loose snow, but they may give you les\
s traction
on ice than regular tires.
If you do not expect to be driving in deep
snow, but may have to travel over ice, you may not want
to switch to
snow tires at all.
You may want to put winter emergency supplies in your vehicle.
Include
an ice scraper, a small brush or broom, a supply of windshield
washer fluid, a rag, some winter outer clothing, a small shovel, a flashlight, a
red cloth, and a couple of reflective warning triangles. And, if you will be
driiing under severe conditions, include a small bag of sand, a piece of
old
carpet or a couple of burlap bags to help provide traction. Be sure you
properly secure these items in your vehicle.
Driving on Snow or Ice
Most of the time, those places where your tires meet the road probably\
have
good traction.
However,
if there is snow or ice between your tires and the road, you can
have a very slippery situation. You’ll have a lot less traction or “grip” and
will
need to be very careful.
4-53

Your Driving and the Road
AN480044
Run your engine only as long as you must. This saves fuel. When you run
the engine, make
it go a little faster than just idle. That is, push the
accelerator slightly. This uses
less fuel for the heat that you get and it keeps
the battery charged.
You will need a well-charged battery to restart the
vehicle, and possibly
for signaling later on with your headlights. Let the heater
run for awhile. Then,
shut the engine off and close the window almost all the
way to preserve the heat. Start the engine again and repeat this only when
you feel really uncomfortable from the cold. But do it as little as possible.
Preserve the fuel as long as you can. To help keep warm, you can get out
of the vehicle and do some fairly vigorous exercises every half hour or so
until help comes.
If You’re Stuck in Deep Snow
This manual explains how to get the vehicle out of deep snow without
damaging it. See “Rocking Your Vehicle” in the Index.
Towing a mailer
I A If you don’t use the correct equipment and drive properly, you can
lose control when
you pull a trailer. For example, if the trailer is too
heavy, the brakes may not work well-or even at all. You and your
passengers could be seriously injured. Pull a trailer only
if you have
followed all the steps in this section.
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