Page 253 of 354

Inflation - Tire Pressure
The Tire-Loading Information label which is on the
driver’s door 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
a mile.
I
’ NOTICE:
Don’t let anyone tell you that underidation or
~ overinflation is all right. It’s not. If your tires don’t
~ have enough air (underinflation) you can get:
Too much flexing
Too much heat
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
If your tires have too much air (overinflation),
you can get:
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
Use a good quality pocket-type gage to check tire
pressure. Simply looking at the tires will
not tell you the
pressure, especially if you have radial tires
-- which
may look properly inflated even
if they’re underinflated.
If your tires have valve caps, be sure to put them back on.
They help prevent leaks by keeping out dirt and moisture.
Tire Inspection and Rotation
Tires should be inspected every 6,000 to 8,000 miles
(10 000 to 13 000 km) for any signs of unusual wear. If
unusual wear is present, rotate your tires as
soon as
possible and check wheel alignment. Also check for
damaged tires or wheels. See “When It’s Time for New
Tires” and “Wheel Replacement” later in this section for
more information.
The purpose
of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services” in
the Index for scheduled
rotation intervals.
ProCarManuals.com
Page 254 of 354
When rotating your tires, always use one of the correct
rotation patterns shown here.
,
c
t
ri . e1
After the tires have Deen 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.
6-43
ProCarManuals.com
Page 257 of 354

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. These
grades are molded
on the sidewalls of passenger
car tires.
While the tires available as standard or optional
equipment on General Motors vehicles may vary with
respect to these grades, all such tires meet General
Motors performance standards and have been approved
for use on General Motors vehicles. All passenger type
(P Metric) tires must conform to Federal safety
requirements
in addition to these grades.
Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
In most cases, you will
not need to have your wheels
aligned again. However, if you notice unusual tire wear
or your vehicle pulling one way or the other, the
alignment may need to be reset.
If you notice your
vehicle vibrating when driving on
a smooth road, your
wheels may need to be rebalanced.
ProCarManuals.com
Page 258 of 354

Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted
or corroded.
If wheel nuts keep coming loose, the wheel,
wheel bolts, and wheel nuts should be replaced.
If the
wheel leaks air, replace it (except some aluminum
wheels, which can sometimes be repaired). See your
Chevrolet/Geo dealer
if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load carrying
capacity, diameter, width, offset, and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts,
or wheel nuts, replace them only with new
GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts,
and wheel nuts for your Geo
model. I NOTICE:
The wrong wheel can also cause problems
with bearing life, brake cooling,
speedometer/odometer calibration, headlamp aim, bumper height, vehicle ground clearance,
and tire or tire chain clearance to the body and
chassis.
ProCarManuals.com
Page 259 of 354
Used Replacement Wheels Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only
SAE Class “S” type chains
that are the proper size for your tires. Install
them on the tires of the drive axle (four-wheel
drive vehicles can use chains on both axles).
Tighten them as tightly as possible with the ends
securely fastened. Drive slowly and follow the
chain manufacturer’s instructions.
If you can
hear the chains contacting your vehicle, stop and
retighten them.
If the contact continues, slow
down until it stops. Driving too fast or spinning
the wheels with chains
on will damage your
vehicle.
6-48
ProCarManuals.com
Page 267 of 354

Aluminum Wheels (If So Equipped)
Your aluminum wheels have a protective coating similar
to the painted surface of your vehicle. Don’t
use strong
soaps, chemicals, chrome polish, abrasive cleaners or
abrasive cleaning brushes
on them because you could
damage this coating. After rinsing thoroughly, a wax
may be applied.
I NOTICE:
If you have aluminum wheels, don’t use an
automatic vehicle wash that has hard silicon
carbide cleaning brushes. These brushes can take
the protective coating
off your aluminum wheels.
Tires
To clean your tires, use a stiff brush with a tire cleaner.
When applying a tire dressing always take care
to wipe
off any overspray or splash from painted surfaces.
Petroleum-based products may damage the paint finish.
Sheet Metal Damage
If your vehicle is damaged and requires sheet metal
repair or replacement, make sure the body repair shop
applies anti-corrosion material to the parts repaired or
replaced to restore corrosion protection.
Finish Damage
Any stone chips, fractures or deep scratches in the finish
should be repaired right away. Bare metal will corrode
quickly
and may develop into a major repair expense.
Minor chips and scratches can be repaired with touch-up
materials available from your dealer
or other service
outlets. Larger areas of finish damage can be corrected
in your dealer’s body and paint shop.
ProCarManuals.com
Page 274 of 354

7 8
9
10 11
12
13
14 Lighter;
Radio
Ignition System; Warning and Indicator Lights
Turn Signal Lamps; Back-up Lamps
WiperNasher
Rear Defogger
Heater
Rear Wheel Anti-Lock Main Relay
Electronic Fuel Injection Main Relay Replacement Bulbs
Back-up .................................... 1156
Center High-Mounted Stop
...................... 921
Dome
............ GM Part No. 9605 1559 or equivalent
Front Parking and Turn Signal
............... 1157 NA
Headlamp (Halogen) .......................... 9004
GM Part
No. 944173 1 or equivalent
GM Part
No. 96052599 or equivalent
Heater
or Air
Conditioning Control ...................
Indicator and Warning
Brake
........... GM Part No. 9433184 or equivalent
Check Engine
..... GM Part No. 9433184 or equivalent
4WD ........... GM Part No. 9433184 or equivalent
................ GM Part No. 9433184 or equivalent
Safety Belt
....... GM Part No. 9433184 or equivalent
Turn Signal
...... GM Part No. 9433 184 or equivalent
Charging System
. . GM Part No. 9433184
or equivalent
Engine Oil Pressure GM Part
No. 9433184 or equivalent
Headlamp High Beam
Instrument Cluster GM Part
No. 9605 1561 or equivalent
6-63
ProCarManuals.com
Page 277 of 354

Capacities (Approximate) Continued
Front Differential .................... 1.1 qt. (1 .O L)
Fuel Tank .......................... 11.1 gal. (42 L)
Manual Transmission
Four-wheel Drive
................. 1.6 qt. (1.5 L)**
Two-Wheel Drive ................. 1.8 qt. (1.7 L)**
Rear Differential .................... 2.3 qt. (2.2 L)
Transfer Case ....................... 1.8 qt. (1.7 L)
* When changing the oil filter, additional oil may be needed.
Recheck the oil level after filling. See “Engine Oil” in the
Index.
** Recheck fluid level after filling. See “Automatic
Transmission Fluid” or “Manual Transmission Fluid” in the
Index.
Wheel Nuts
Wheel Nut Torque ................. 60 lb- ft (80 Nom)
Vehicle Dimensions
Wheelbase ....................... 86.6” (2 200 mm)
Tread Front
......................... 54.9” (1 395 mm)
Rear
.......................... 55.1” (1 400 mm)
Length
......................... 142.5” (3 620 mm)
Width
........................... 64.2” (1 630 mm)
Height
........................... 65.0” (1 65 1 mm)
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air
conditioning system
in your vehicle needs refrigerant, be
sure the proper refrigerant is used. If you’re not sure, ask
your Chevrolet/Geo dealer.
For additional information, see
your “Warranty and Owner Assistance Information” booklet.
ProCarManuals.com