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Anti-Lock Brake System Active Light
(If Equipped)
ABS
ACTIVE
Engine Coolant Temperature Gage
When your anti-lock system
is adjusting brake pressure
to help avoid a braking skid,
the anti-lock brake system
active light will come on.
Slippery road conditions may exist if this light comes
on,
so adjust your driving accordingly. The light will
stay on for a few seconds after the system stops
adjusting brake pressure.
The anti-lock brake system active light also comes on
briefly when you turn the ignition key
to ON. If the light
doesn’t come on then, have it fixed
so it will be there to
tell you when the system
is active. This
gage shows the engine
coolant temperature. If the
gage pointer moves to the
H
(red) side, your engine is
too hot!
It means that your engine coolant has overheated and
you should
stop your vehicle and turn off the engine as
soon as possible.
In “Problems on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.
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Malfunction Indicator Lamp (Service Engine
Soon Light)
SERVICE
ENGINE
SOON
Your Geo is equipped with a
computer which monitors
operation of the fuel,
ignition and emission
control systems.
This system is called OBD
I1 (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for
the life
of the vehicle, helping to produce a cleaner
environment. (In Canada, OBD I1
is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem
is apparent. This may
prevent more serious damage to your vehicle. This
system
is also designed to assist your service technician
in correctly diagnosing any malfunction.
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead
to costly repairs that may not be
covered by your warranty.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running.
If the light doesn’t come on, have it repaired.
This light
will also come on during a malfunction in one
of two ways:
Light Flashing -- A misfire condition has been
detected.
A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer
or qualified service center diagnosis
and service is required.
0 Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
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If the Light Is Flashing If the Light Is On Steady
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed.
Avoiding hard accelerations.
Avoiding steep uphill grades.
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady, see
“If
the Light Is On Steady” following.
If the light continues to flash, when it
is safe to do so,
stop
the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart the
engine. If the light remains on steady, see “If the Light
Is On Steady” following.
If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer
or qualified service center for service. You
may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fL1el cap, making sure to fully install
the cap. The diagnostic system can determine
if the fuel
cap has been left off or improperly installed.
A loose or
missing fuel cap
will allow fuel to evaporate into the
atmosphere. A few driving trips with the cap properly
installed should
turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should
turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run
as efficiently as designed since small amounts of
air are sucked into the fuel
line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly. It
will take a few driving trips to turn the light off.
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Have you recently changed brands of fuel?
If
so, be sure to fuel your vehicle with quality fuel (see
“Fuel” in the Index). Poor fuel quality will cause your
engine not to run as efficiently as designed.
You may
notice this as stalling after start-up, stalling when you
put the vehicle into gear, misfiring, hesitation on
acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least one
full tank of the proper fuel to turn the light off.
If none
of the above steps have made the light turn off,
have your dealer or qualified service center check the
vehicle.
Your dealer has the proper test equipment and
diagnostic tools to
fix any mechanical or electrical
problems that may have developed.
Oil Pressure Light
If you have a problem with
your oil, this light may stay
on after you start your
engine, or come on when
you are driving.
This indicates that there is not enough pressure to keep
your engine properly lubricated and cool. The engine
could be low on
oil, or have some other oil related
problem. Have
it fixed right away.
The
oil light could also come on in three
other situations.
0 When the ignition is on but the engine is not running,
the light will come on as a test to show you it
is
working, but the light will go out when you turn the
engine to START. If it doesn’t come on with the
ignition on, you may have a problem with the fuse or
bulb. Have it fixed right away.
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Page 124 of 388
0 Sometimes when the engine is idling at a stop, the
light may blink on and
off. This is nonnal.
If you make a hard stop, the light may come on for a
moment. This is normal.
I I
A CAUTIPN:
I
Don't keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fie. You or others could be burned.
Check your oil as soon
as possible and have your
vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
Power Indicator Light (If Equipped)
POWER
This light comes on when
the power mode selector
switch
is turned to
POWER (P) with the
ignition switch in the
ON position.
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Overdrive Off Light (If Equipped)
O/D OFF
This light comes on when
the automatic four-speed
transmission has been
converted to the three-speed
mode and the overdrive
is
turned off.
Daytime Running Lamps (DRL)
Indicator Light
:::O .a.
This light goes on whenever
the daytime running lamps
are on.
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Air Conditioner Controls (Option)
The air conditioning system
uses the same controls as
described previously. The
function
of each lever is
explained under “Climate
Control System” in this
part. The incoming air is
cooled and dehumidified
instead of being heated.
Push the
A/C button to change your comfort control
system from heating to air conditioning.
A light will
come
on when the air conditioning is on. The A/C
button can also control the humidity in your vehicle.
The air conditioner works best if you keep your
windows closed. On very hot days, open the windows
just long enough for the hot air to escape.
For normal cooling, push the
A/C button and move the
air intake lever to CIRCULATE. For faster cooling,
move the lever to RECIRCULATE. Then move the
airflow lever to VENT, the temperature control lever
toward the left and the fan control lever toward the
fan symbol.
On days when
it is raining or the humidity is high,
follow these dehumidifying steps to help clean windows
that are cloudy with moisture. Push the A/C button.
Move the air intake lever to CIRCULATE. Move the
airflow lever to DEFROST and
the fan control lever
toward the fan symbol. Adjust
the temperature control
lever to
a comfortable setting.
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Ventilation Tips
Keep the hood and front air inlet free of ice, snow or any
other obstruction (such as leaves). The heater and
defroster will work far better, reducing the chance of
fogging the inside
of your windows.
When you enter a vehicle in cold weather, move the fan
control lever toward the fan symbol for a few moments
before driving off. This helps clear the intake ducts of
snow and moisture, and reduces the chance
of fogging
the inside of your windows.
Keep the air path under the front seats clear of objects.
This helps air to circulate throughout your vehicle.
Defogging and Defrosting
Slide the air intake lever to CIRCULATE and the
airflow lever to DEFROST to direct air to the
windshield vents.
Then slide the temperature control
lever toward the right and the fan lever toward the fan
symbol. When the windshield
is clear, turn down the
fan speed.
Rear Window Defogger
The rear window defogger uses a warming grid
to
remove fog from the
rear window.
Press the switch to turn
on the defogger. An indicator
light will come on below the switch to remind you that
the defogger is on. Press the switch again to turn the
defogger
off. The rear window defogger will also turn
off
if you turn the ignition switch to ACC or LOCK, but
will turn
back on when the ignition is turned back on.
Do not attach anything like a temporary vehicle license
or
a decal across the defogger grid on the rear window.
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