tire pressure CHEVROLET TRACKER 1996 Owners Manual

I
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 the
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.
4-7
ProCarManuals.com

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 “overdriving” those conditions, But skids
are always possible.
The three types of skids correspond to your Geo’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.
mle 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.
If you have the anti-lock braking system, remember: It
helps avoid only the braking skid. If you do not have
anti-lock, then in a braking skid (where the wheels are
no longer rolling), release enough pressure
on the brakes
to get the wheels rolling again. This restores steering
control. Push the brake pedal down steadily when you
have
to stop suddenly. As long as the wheels are rolling,
you will have steering control.
4-13 ProCarManuals.com

Driving in Mud, Sand, 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
bnger 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.
c
A CAUTION:
-
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.
4-27
ProCarManuals.com

Hydroplaning
Hydroplaning is dangerous. So much water can build up
under your tires that they can actually ride
on the water.
This can happen if the road is wet enough and you’re
going fast enough. When your vehicle is hydroplaning,
it has little or no contact with the road.
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 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.
r
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.
“Tires”
in the Index.)
Have good tires with proper tread depth. (See
1.
4-33
ProCarManuals.com

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.
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 Geo
dealerships all across North America. They’ll be ready
and willing to help if you need it. Here are
some things you can check before a trip:
a
0
0
a
a
0
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?
Lamps: 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?
4-36
ProCarManuals.com

Loading Your Vehicle
TIRE PLACARD
I GWR IGWR FRTI GAWR RR I I I I I I
LBIKg
~~
TIRES
RIMS
INFLATION
COLD PSl/kPa PRESSURE
MFD BY CAM1 AUTOMOTIVE DATE GVWR GAWR FRT CANADA GAWR RR
Two labels on your vehicle show how much weight it
may properly carry. The Tire-Loading Information label
found on the driver's door lock pillar tells you the
proper size, speed rating and recommended inflation pressures for the tires on your vehicle. It also gives you
important information about the number
of people that
can be in your vehicle and the total weight that you can
carry. This weight is called the vehicle capacity weight
and includes the weight
of all occupants, cargo and all
nonfactory-installed options. The
other label is the Certification label, also found on
the driver's door
lock pillar. It tells you the gross weight
capacity of your vehicle, called the GVWR (Gross
Vehicle Weight Rating). The GVWR includes th'e weight
of the vehicle, all occupants, fuel and cargo. Never
exceed the
GVWR for your vehicle, or the Gross Axle
Weight Rating
(GAWR) for either the front or rear axle.
And, if you do have a heavy load, you should spread it
out. Don't
carry more than 400 lbs. (1 8 1 kg) in your
rear area when four people
are in your two-wheel-drive
vehicle.
If you have a four-wheel-drive vehicle, don't
carry
more than 200 lbs. (91 kg) in your rear area when
four people are
in your vehicle.
4-46
ProCarManuals.com

We don’t make tires. Your new Geo comes with
high-quality tires made by a leading tire manufacturer.
If you ever have questions about your tire warranty and
where to obtain service, see your Geo Warranty booklet
for details.
A CAUTION:
Poorly maintained and improperly used
are dangerous.
0 Overloading your tires can cause tires
0
0
0
overheating as a result of too
much friction.
You could have an air-out and a serious
accident. See “Loading
Your Vehicle” in
the Index.
Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are
cold.
Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires at the recommended pressure.
Worn,
old tires can cause accidents. If your
tread
is badly worn, or if your tires have
been damaged, replace them.
6-40
ProCarManuals.com

Inflation -- Tire Pressure
The Tire-Loading Information label, which is on the
driver’s door lock pillar,
shows the correct inflation
pressures for your tires when they’re cold. “Cold”
means your vehicle has been sitting for at least three
hours or driven no more than
1 mile ( 1.6 km).
I NOTICE:
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s
not. If your tires
don’t have enough
air (underinflation), you can
get the following:
Too much flexing
Too much heat
0 Tire overloading
Bad wear
0 Bad handling
0 Bad fuel economy.
NOTICE: (Continued) NOTICE:
(Continued)
If your tires have too much air (overinflation),
you can get the following:
0 Unusual wear
0 Bad handling
Rough ride
Needless damage from road hazards.
~
When to Check
Check your tires once a month or more. Also, check the
tire pressure
of the spare tire.
How to Check
I
I
L’
Use a good quality pocket-type gage to check tire
pressure. You can’t tell
if your tires are properly inflated
simply by looking at them. Radial tires may
look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back
on the valve stems.
They help prevent leaks by keeping out
dirt and moisture.
6-41
ProCarManuals.com

After the tires have been rotated, adjust the front and rear
inflation pressures as shown on the Tire-Loading
Information label. Make certain that all wheel nuts are
properly tightened. See “Wheel Nut Torque”
in the Index.
Rust or dirt on a wheel, or on the parts to which
it is fastened, can make wheel nuts become loose
after a time. The wheel could come off and cause
an accident. When
you change a wheel, remove
any rust or dirt from places where the wheel
attaches to the vehicle. In an emergency, you can
use
a cloth or a paper towel to do this; but be
sure
to use a scraper or wire brush later, if you
need to, to get all the rust or dirt off. (See
“Changing
a Flat Tire” in the Index.) When
It’s Time
for New Tires
One way to tell when it’s
time for new tires
is to
check the treadwear
indicators, which will
appear when your tires have
only
1/16 inch (1.6 mm) or
less of tread remaining.
You need a new tire if any of the following statements
are true:
0 You can see the indicators at three or more places
You can see cord or fabric showing through the
tire’s rubber.
0 The tread or sidewall is cracked, cut or snagged deep
enough to show cord or fabric.
0 The tire has a bump, bulge or split.
The tire has a puncture, cut or other damage that
around the tire.
can’t be repaired well because of the size or location
of the damage.
6-43
ProCarManuals.com

I Short Trip/City Maintenance Schedule I
90,000 Miles (150 000 km) (Continued)
0 Drain, flush and refill cooling system (or
every 30 months, whichever occurs first).
See “Engine Coolant” in the Index for
what to use. Inspect
hoses. Clean radiator,
condenser, pressure cap and neck. Pressure
test the cooling system and pressure cap.
An Emission Control Service.
0 Replace spark plugs.
An Emission Control Service.
0 Replace air cleaner filter.
An Emission Control Service.
0 Inspect fuel tank, cap and lines for damage
or leaks. Inspect fuel cap gasket for
any
damage. Replace parts as needed.
An Emission Control Service.
otate tires. See “Tire Inspection and Rotatio
in the Index for proper rotation pattern and
additional information.
During tire rotation,
check brake calipers for heedom of movement.
Refer to the appropriate
GM service manual for
proper caliper service procedures.
15 months, whichever occurs first).
An Emission Control Service.
whichever occurs first).
An Emission Control Service.
0 Check engine idle speed and adjust it
to underhood label specifications.
An Emission Control Service.?
0 Inspect the locking front hubs (if equipped)
for correct operation (or every 3 months,
whichever occurs first). Repair or replace
as necessary.
0 Change manual transmission fluid (or every
0 Inspect the valve lash and adjust if necessary.
0 Replace fuel filter (or every 30 months,
7-28
ProCarManuals.com