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, which
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:
0 Light Flashing -- A misfire condition has been
detected, A misfire increases vehicle emissions and
may damage the emission tontrol 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 vehicIe.
Dealer or qualified service center diagnosis and
service may be required.
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The oil light could also come on in three other situations.
When the ignition is on but the engine is not running,
&e light. wLU 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.
light
may blink on and off. This is normal.
Sometimes when the engine is idling at a stop, the
If you make a hard stop, the light may come on for a
moment. This is normal.
Don’t keep driving if the oil pressure is low. If
you
do, your engine can become so hot that it
catches
fire. 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 (Option)
POWER
- This light comes on
when the power mode
selector switch is turned to
P (power) with the ignition
switch
in the.ON position.
-
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If your vehicle is certified to meet California Emission
Standards (indicated
on the underhood tune-up label), it
is designed to operate on fuels that meet California
specifications. If such fuels are not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on
your instrument panel may turn on and/or your vehicle
may fail a smog-check test. If this occurs, return to your
authorized Geo dealer for diagnosis to determine the
cause
of failure. In the event it is determined that the
cause
of the condition is the type of fuels used, repairs
may not be covered by your warranty.
In Canada, some gasolines contain an octane-enhancing
additive called
MMT. If you use such fuels, your
emission control system performance may deteriorate
and the malfunction indicator lamp
on your instrument
panel may turn
on. If this happens, return to your
authorized Chevrolet/Geo dealer for service.
To provide cleaner air, all gasolines are now required to
contain additives that will help prevent deposits
from
forming in your engine and fuel system, allowing your
emission control system
to function properly. Therefore,
you should not have to add anything to the fuel.
In
addition, gasolines containing oxygenates, such as ethers
and ethanol, and reformulated gasolines may be available
in your area to help clean the air. General Motors
recommends that you use these gasolines
if they comply
with the specifications described earlier.
1 NOTICE:
,
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
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Brake Wear
Your Geo has front disc brakes and rear drum brakes.
Disc brake pads have built-in wear indicators that make a
high-pitched warning sound when the brake pads are
wor~ and new pads are needed.
The sound may come and
go or be heard all the time your vehicle is moving (except
when you are pushing
on the brake pedal firmly).
The brake wear warning sound means that sooner
or later your brakes won’t work
well. That could
lead
to an accident. When you hear the brake
wear warning
sound, have your vehicle serviced.
I NOTICE: I
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,
Free movement of brake calipers and properly torqued
wheel nuts are necessary to help prevent brake pulsation.
When tires are rotated, inspect brake calipers for
movement, brake pads for wear, and evenly torque wheel
nuts
in the proper sequence to GM specifications.
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.
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Ignition Positions ....... ............ 2-4
Inflation, Tire
................................ 6-41
Inside Daymight Rearview Mirror ................. 2-37
Inspections
.................................... 7-51
Exhaust Systems
............................. 7-5 1
Front-Wheel-Drive Axle Boot .................. 7-5 1
Front-Wheel-Drive Axle Seal ................... 7-5 1
Radiator and Heater Hose ...................... 7-51
RearAxle
................................... 7-52
Steering
.................................... 7-51
Suspension
................... ........... 7-51
Throttle Linkage
.............................. 7-52
Instrument Panel
............................... 2-56
Brightness Control
............................ 2-36
Cleaning
.................................... 6-51
Cluster ..................................... 2-58
Fuse Block .................................. 6-58
Interior
Lamps .................... ... 2-36
Brake
System
.... ....................... 7-52
Jack. Tire
....
Jump Starting . .
.................... 5-23
................... 5-2
Key Lock Cylinders Service ..................... 7-48 .
Keys .......................................... 2-1
Labels
Certification
................................. 4-46
Certification/Tire
............................. 4-46
Service Parts Identification ..................... 6-57
8 Tire-Loading Information ...................... 4-46
Vehicle Identification Number ................... 6-57
Lamps
...................................... 2-35
Dome ................. ........... 2-36
Interior
............ ......... 2-36
On Reminder ......... , ... ....... 2-29
Lamps Control
........................ . . 2-29
Leaving
Your Vehicle ............................. 2-4
Leaving Your Vehicle with the Engine Running
....... 2-22
Lighter
....................................... 2-40
Lights
Air Bag Readiness
................... 1-25.2.6. 2-61
Anti-Lock
Brake System Active ............. 2-64. 4-8
Anti-Lock Brake System Warning
....... . . 2.63, 4.6
Brake System Warning
........... .... 2-62
Charging System
........................... 2-61
Cruise ...................................... 2-33
Daytime Running Lamps Indicator ............... 2-69
Oil Pressure ................................. 2-67
Overdrive0
fi ................................ 2-69
Rear Window Defogger
......................... 3-5
9-6
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Safety Belt Reminder ..................... 1-1 3. 2.60
Service Engine Soon
.......................... 2-65
Loading Your Vehicle
. . ..................... 4-46
Locks
............ ................... 2-3
Cylinders
....... ................ 7-48
Door ........... ................... 2-3
FuelDoor
.................................... 6-5
Key Lock Cylinder Service
..................... 7-48
PowerDoor
.................................. 2-3
Steering Column Lock Check
................ 1 .. 7-50
Window
.................................... 2-27
Rear Door Security
............................. 2-4
Low, Automatic Transmission
..................... 2- 12
Lowering and Raising the Canvas Top
.............. 2-49
Lubricants and Fluids
............................ 7-53
Lubrication Service, Body
........................ 7-48
Maintenance, Normal Replacement
Pa& ........... 6-62
Maintenance Record
............. ' ............... 7-55
Maintenance Schedule
............................ 7-1
Long Tripmighway Definition
................... 7-6
Long Tripmghway Intervals
................ 7-6, 7-32
Periodic Maintenance Inspections
................ 7-5 1
Owner Checks and Services ..................... 7-47
Recommended Fluids and Lubricants
............. 7-53
Scheduled Maintenance Services
... ............ 7-3 Short
Trip/City Definition
..................... 7-4
Short Trip/City Intervals
.................. 7.4,7. 7.8
Maintenance. Underbody
......................... 6-55
Maintenance When Trailer Towing
................. 4-55
Malfunction Indicator Lamp
...................... 2-65
Manual Adjust Mirror
........................... 2-37
ManualFrontSeat ............................... 1-1
Manual Transmission ........................ 2.8. 2.14
Shifting
.................. .................. 2-14
Starting Your Engine
........................... 2-8
Fluid
....................................... 6-19
Methanol
....................................... 6-3
Mirrors
....................................... 2-37
Convex Outside
.............................. 2-38
Inside Daymight Rearview
..................... 2-37
Manual Adjust ............................... 2-37
Power Remote Control ......................... 2-38
MMT ......................................... 6-3
Model Reference
......... ......... 111
Mountain Roads ............................ 4-37
Multifunction Lever
............................. 2-28
...
Neutral, Automatic Transmission ................. 2-11
Neutral, Manual Transmission
..................... 2-15
New Vehicle Break-In ............................ 2-6
Night Vision ................................. 4-30
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Trailer Brakes
..................................... 4-51
Driving on Grades ............................ 4-53
Driving with
................................. 4-52
Hitches
..................................... 4-51
Maintenance
When Towing ..................... 4-55
ParkingonHills .............................. 4-54
Safety Chains
................................ 4-51
Tongueweight
............................... 4-50
Total Weight on Tires
.......................... 4-50
Turnsignals ................................. 4-53
Weight
..................................... 4-49
Transfer
Case. Manual Shift ................. 2- 18. 6-22
Transmission Fluid
Automatic
................................... 6- 15
Transportation. Courtesy .......................... 8-6
Trip
Odometer ................................. 2-59
TTYUsers
..................................... 8-3
Turn Signal and Lane Change Signals ............... 2-28
Turn Signal/Multifunction Lever
................... 2-28
Manual ..................................... 6-19
Turn Signals When Towing a Trailer ................ 4-53
Underbody Flushing Service
..................... 7-50
Underbody Maintenance
.... ............... 6-55
Vehicle Control
...................................... 4-5 Damage
Warnings
............................... v
Dimensions ................................. 6-64
Identification Number
......................... 6-57
Loading
........... .................... 4-46
Storage
....... .................... 6-33
Visors. Sun .................................... 2-41
warning Devices
............................... 5-2
Warning Lights. Gages and Indicators
............... 2-60
Washer Fluid. Windshield
........................ 6-28
Washing Your Vehicle ........................... 6-52
Weatherstrips
.................................. 6-52
Wheel
Alignment
.................................. 6-46
LockKey
................................... 5-23
Nut Torque ............................. 5-31. 6-63
Replacement
................................. 6-46
Wrench ..................................... 5-23
Window Lock
.................................. 2-27
Windows. Power
............................... 2-27
Windshield Washer
............................. 2-31
Fluid
................... I .............. 6-28. 2-31
Fluid Level Check
............................ 7-47
Rear ....................................... 2-31
Windshield Wiper
.............................. 2-30
Rear ........................... : ........... 2-31
Winter
Driving ................................. 4-39
Wrench. Wheel ................................. 5-23
Ventilation
System
............................. 3-3
. c
9-12
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