Page 173 of 258
Service and Appearance Care
Radiator Pressure Cap
16-Valve Engine
To Add Coo1ant:If you need to add more
coolant, add the proper mix
qt the coolant
recovery tank. Add
coolant
mix at the recovery tank, but
be careful not to spill it.
NOTICE:
Your radiator cap is a 13 psi (90 kPa)
pressure-type cap and must be tightly
installed to prevent coolant loss and
possible engine damage
from over-
heating.
Be sure the amows on the
cap line up with the overflow tube
on the radiator filler neck.
When you replace
your radiator pressure
zap, an
AC@ cap is recommended.
Thermostat
Engine coolant temperature is controlled
by a thermostat in the engine coolant
system. The thermostat stops the
flow of
coolant through the radiator until the
coolant reaches a preset temperature.
When you replace your thermostat,
an
Ace' thermostat is recommended.
. . .172
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Service and Appearance Care
Windshield Washer Fluid
To Add:
Open the cap with the washer symbol on
it. Add washer fluid until the bottle is full.
NOTICE:
When using concentrated washer
tluid, follow the manuficturer’s
instructions for adding water.
Don’t mix water with
ready-to-use washer fluid. Water
can cause the solution to freeze
and damage
your washer fluid
tank and other parts
of the washer
system. Also, water doesn’t clean
as well
as washer tluid.
Fill your washer tluid tank only
3/4 full when it’s very cold. This
allows for expansion, which could
damage the
tank if it is completely
full.
Don’t use radiator antifreeze in
your windshield washer. It can
damage your washer system and
paint.
Brake Master Cylinder
Your brake master cylinder is here. It is
‘illed with
DOT-3 brake fluid.
I‘here are
only two reasons why the brake
fluid level
in your master cylinder might
go down. The first is that the brake fluid
goes down
to an acceptable level during
lormal brake lining wear. When new
iinings are put
in, the fluid level goes
mck
up. The other reason is that tluid is
leaking out of the brake system.
If it is,
you should have your brake system fixed,
;ince a leak means that sooner or later
your brakes won’t work well,
or won’t
work
at all.
So, it isn‘t a good idea to “top off’ your
brake fluid. Adding brake tluid won’t
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~ Service and Appearance Care
r
NOTICE:
Continuing to drive
with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates may
cause a brake squeal when the brakes are
first applied or lightly applied. This does
not mean something is wrong with your
brakes.
Your rear drum brakes don’t have wear
indicators, but if you ever hear a rear
brake rubbing noise, have the rear brake linings inspected. Also, the rear brake
drums should be removed and inspected
each time the tires are removed for
rotation or changing. When you have the front brakes replaced, have
the rear
brakes inspected, too.
Brake linings should always be replaced
as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does
not return to normal height, or if there is a
rapid increase in pedal travel. This could
be a sign
of brake trouble.
Brake Adjustment
Every time you make a brake stop, your
disc brakes adjust for wear.
If your brake pedal goes down farther
than normal, your rear drum brakes may
need adjustment. Adjust them by backing
up and firmly applying the brakes a few
times.
Replacing Brake System Parts
The braking system on a modern vehicle
is complex. Its many parts have to be of
top quality and work well together
if the
vehicle is
to have really good braking.
Vehicles we design and test have
top-quality GM brake parts in them, as
your Geo does when it is new. When you replace parts
of your braking system -
for example,
when your brake linings
wear down and you have to have new
ones put in
- be sure you get new
genuine
GM replacement parts. If you
don’t, your brakes may no longer work
properly. For example, if someone puts in
brake linings that are wrong for your
vehicle, the balance between your front
and rear brakes can change, for the worse.
The braking performance you’ve come to
expect can change in many other ways if
someone puts in the wrong replacement
brake parts.
Battery
Every new Geo has a Delco Freedoms
battery.
You never have to add water to
one
of these. When it’s time for a new
battery, we recommend a Delco
Freedoma battery. Get one that has the
catalog number shown on the original
battery’s label.
Vehicle Storage
If you’re not going to drive your vehicle
for
25 days or more, take off the black,
negative
(-) cable from the battery. This
. . .I76
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Page 179 of 258
Service and Appearance Care
3. Turn the lock ring to the left to release
the bulb. 4. Pull the lock ring and the headlight
bulb straight out. Save the lock ring
and use with
the new bulb.
5. Reverse the steps with a new bulb.
Front Parking and Turn Signal Lights
ro replace the parking and turn signal
mlb:
I. Open the hood.
2. Turn the bulb socket to the left and
pull
it out of light housing.
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Service and Appearance Care
Rear Combination Lights
To remove the rear combination bulbs:
1. Remove the two screws from the
combination lights.
2. Pull the combination light out Fdr
enough to reach the bulb socket. 1. Turn the socket to the right and pull it
1. Pull the bulb out of the socket.
i. Reverse the steps with a new bulb.
out.
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Service and Appearance Care
1
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1
1)
:he other label is the Certification label,
dso found
on the driver’s door lock pillal
t tells you the gross weight capacity of
Tour vehicle, called the
GVWR (Gross
Jehicle Weight Rating). The
GVWR
dudes the weight of the vehicle, all
ccupants, fuel and cargo. Never exceed
ne GVWR for your vehicle, or the Gross
Ytle Weight Rating (GAWR) for either
he front or rear axle.
ind, if you
do have a heavy load, you
hould spread it out. Don’t carry more
han
400 pounds (1 8 1 kilograms) in your
ear area when four people are in your
wo-wheel drive vehicle.
If you have a
our-wheel drive vehicle, don’t carry
nore than
200 pounds (91 kilograms) in
{our rear area when four people are
in
Tour vehicle.
NOTICE:
I
Your warranty does not cover parts or
components that fail because
of over-
loading.
I ~
[f you put things inside your vehicle -
like suitcases, tools, packages, or
anything else
- they will go as fast as the
vehicle goes. If you have to stop or turn
quickly, or if there is a crash, they’ll keep
going.
. .I82
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Service and Appearance Care
Inflation - Tire Pressure
The Certificatioflire label which is on the driver’s door shows the correct inflation
pressures for your tires, when they’re cold. ‘Told” means your vehicle has been
sitting for at least three hours or driven no more than
a mile.
NOTICE:
Don’t let anyone tell you that underinflation PI: overinflation is all right. It’s not.
If your tires don’t have enough air (underinflation) you can get:
i Too much flexing
0 Too much heat
0 Tire overloading
0 Bad wear
0 Bad handling
0 Bad fuel economy.
If your tires have too much air (overinflation), you can get:
0 Unusual wear
0 Bad handling
0 Rough ride
0 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: Use a good quality
pocket-type gage to check tire
I
1
t
7
xessure. Simply looking at the tires
will not tell
you the pressure,
:specially if you have radial tires
-
which may look properly inflated even
.f they’re underinflated.
[f your tires have valve caps, be sure to
Jut them back on. They help prevent
leaks by keeping out dirt and moisture.
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-
Service and Appearance Care
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
2/32 inch (1.6 mm) or less of tread
remaining.
You need a new tire
if
0 You can see the indicators at three or
more places around
the tire.
0 You can see cord or fabric showing
through the tire’s rubber.
The tread or sidewall is cracked, cut
or snagged deep enough to show cord
or fabric.
The tire has a bump, bulge or split.
. . ,186
0 The tire has a puncture, cut, or other
damage that can’t be repaired well
because of the size or location
of the
damage.
Buying New Tires
To find out what kind and size of tires you
need,
look at the Certificationnire label.
The tires installed on your vehicle when it
was new had a Tire Performance Criteria
Specification (TPC Spec) number on each
tire’s sidewall. When you get new tires,
get ones with that same TPC Spec
number. That way, your vehicle
will
continue to have tires that are designed to
give proper endurance, handling, speed
rating, traction, ride and other things
during normal service on your vehicle. If
your tires have an all-season tread design,
the TPC number will be followed by a
“MS” (for mud and snow).
If you ever replace your tires with those
not having a TPC Spec number, make
sure they are the same size, load range,
speed rating and construction type (bias,
bias-belted or radial) as your original
tires.
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.)
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
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