1998 CHEVROLET CORVETTE service

Downloaded from www.Manualslib.com manuals search engine If the light comes on while you are driving and you have Anti-Lock Brake System Warning Light
a LOW -BRAKE FLUID message showing on the DIC,
pull
off the road and stop carefully. You may notice that
engine and may stay on for
on, have the vehicle towed for service. (See “Towing on
when you
start your
to the
floor. It may take longer to stop. If the light is still system,
the light will come
the pedal is, harder to push. Or, the pedal may
go closer With
the anti-lock brake
several seconds.
Your Vel le” in the Index.)
w v v
That’s’normal.
Your brake system may not be working properly
if the brake warning light is on. Driving with the
brake warning light on can lead to an accident.
If
the light is still on after you’ve pulled off the road
and stopped carefully, have the vehicle towed
for service.
If the light stays on, turn the ignition to OFF. Or, if the
light comes on when you’re driving, stop as soon as
possible and turn the ignition
off. Then start the engine
again to reset the system.
If the light still stays on, or
comes
on again while you’re driving, your vehicle needs
service. If the regular brake system warning light isn’t
on, you still have brakes, but you don’t have anti-lock
brakes. If the regular brake system warning light
is also
on, you don’t have anti-lock brakes and there’s a
problem with your regular brakes. See “Brake System
Warning Light” earlier in this section.
The anti-lock brake system warning light should come
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
ready to warn you if there is a problem.

Downloaded from www.Manualslib.com manuals search engine Traction Control System (TCS) Light
Engine Coolant Temperature Gage
I
This light should come on
briefly as you start the
engine. If the light doesn’t
come on then, have it fixed
so it will be ready to warn
you if there’s a problem. This gage shows
the engine
coolant temperature. If the
gage pointer moves into the
shaded area, your engine is
too hot!
If it stays on, or comes on and the DIC shows a
SERVICE TRACTION SYSTEM message when you’re
driving, there’s a problem with your TCS system and
your vehicle needs service. When this light is on, the
system will not limit wheel spin. Adjust your driving
accordingly. If the driver
turns off the Traction Control
System by pressing the button on the console, the TCS
system light will come on and the TRACTION
SYSTEM
OFF message will show on the DIC. This means that your engine coolant has overheated.
If
you have been operating your vehicle under normal
driving conditions, you should pull
off the road, stop
your vehicle and turn
off the engine as soon as possible.
(The larger tic marks are in increments
of 30 O below
220°F (104°C) and in increments of 10 Oabove 220 OF
(104”C).)
In “Problems on the Road,” this manual shows what to do. See “Engine Overheating’’ in the Index.
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Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Check Engine Light)
CHECK
Your vehicle 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. The
CHECK ENGINE 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:
0 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 may be required.
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
Light On Steady -- An emission control system

Downloaded from www.Manualslib.com manuals search engine If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed.
Avoiding hard accelerations.
Avoiding steep uphill’grades.
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.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
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.
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.

Downloaded from www.Manualslib.com manuals search engine Engine Oil Pressure Gage
The engine oil pressure
gage shows the engine oil
pressure in psi (pounds per
square inch) or kPa
(kilopascals) when the
engine is running.
Oil pressure should be
20 to 80 psi (140 to 550 Wa).
(In certain situations such as long, extended idles on hot
days, it could read as low as
6 psi (40 kPa) and still be
considered normal.) It may vary with engine speed,
outside temperature and oil viscosity, but readings above
the shaded area show the normal operating range.
Readings in the shaded area tell you that the engine is
low on oil, or that you might have some other oil
problem. See “Engine Oil” in the Index. The
engine oil pressure can also be displayed using the
GAGES button on the Driver Information Center (DIC).
See “Driver Information Center” in the Index.
A CAUTION:
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.
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Downloaded from www.Manualslib.com manuals search engine DIC Controls and Displays
Turn on the system by turning the ignition to ON. When
you turn on the ignition, the DIC will be in the mode last
displayed when the engine was turned
off. Each DIC
button allows you to scroll through a menu. A blank
page ends each menu.
If a problem is detected, a diagnostic message will
appear on the display. Press RESET to acknowledge any
current warning or service messages. The following
pages will show the messages you can see on the DIC
display by pressing the DIC buttons.
1 FUEL
The FUEL button displays average fuel economy and
instantaneous fuel economy calculated for your specific
driving conditions and range.
I AVERAGE 27.0 MPG
INST. 20.4 MPG
RANGE
220 MI
=
Press the FUEL button to display average fuel economy,
such as:
AVERAGE 20.1 MPG or
0 AVERAGE 5.3 WlOO km
The average fuel economy is viewed as a long-term
approximation of your overall driving conditions. If you
press RESET in this mode while you’re driving, the
system will begin figuring fuel economy from that point
in time.

Downloaded from www.Manualslib.com manuals search engine ABS ACTIVE (Anti-Lock Brake System Active) - :
When your anti-lock system is adjusting brake pressure
to help avoid a braking skid, the ABS ACTIVE message
will be displayed.
Slippery road conditions may exist if this message is
displayed,
so adjust your driving accordingly. The
message will stay on for a few seconds after the system
stops adjusting brake pressure.
SERVICE ABS (Anti-Lock Brake System) - : If the
SERVICE ABS message is displayed when you
are
driving, stop as soon as possible and turn the ignition
off. Then start the engine again to reset the system. If
the message stays on, or comes back on again while you
are driving, your vehicle is in need of service. If the
regular brake system warning light isn’t on, you still
have brakes, but don’t have anti-lock brakes. If the
regular brake system light is also on, you don’t have
anti-lock brakes and there is a problem with your
brakes.
See “Brake System Warning Light” earlier in
this section.
If the SERVICE ABS message is being displayed, your
traction control system and the optional active handling system will also be disabled. The driver information
center will scroll three messages SERVICE ABS,
SERVICE TRACTION SYS. and SERVICE ACTIVE
HNDLG and the instrument cluster car icon will be illuminated.
The driver can acknowledge these messages
by pressing the reset button three times. When the
service message is displayed the computer controlled
systems will not assist the driver and you should have
the system repaired as soon as possible. Adjust your
driving accordingly.
SERVICE COLUMN LOCK: The system that
controls the locking and unlocking of the steering
column may not work properly. Have the vehicle towed
to a dealer for service.
LOW OIL PRESSURE: You will hear four chimes and
the CHECK GAGES telltale will come on when this
message is displayed.
To acknowledge the warning,
press the RESET button. After you press the
RESET
button, a message will be displayed and you will hear a
chime every minute until the vehicle is serviced.
If you
do not press RESET, the message will remain on the
digital display until the vehicle is serviced.
Low oil pressure may be the result of a combination of
low oil level and abrupt changes in the vehicle’s
direction. When this warning
is displayed, you should
not operate the engine at high
RPM or make fast abrupt
moves. When convenient, you should check the oil
level. See “Engine Oil” in the Index.

Downloaded from www.Manualslib.com manuals search engine LOW OIL LEVEL: Press RESET to acknowledge that
you have read the message and to remove it from the
display. The message will reappear every
10 minutes
until this condition changes.
You will hear two chimes when this message is
displayed. If this message appears after starting your
engine, your engine oil level may be too low. You may
need to add oil. See “Engine Overheating” in the Index.
REDUCED ENGINE POWER: You will hear chimes
continuously when this message is displayed. To
acknowledge that you have read the message and to
remove it from the display, press RESET. The message
will reappear every
15 seconds until this
condition changes.
If the Driver Information Center displays the
REDUCED ENGINE POWER message and the
CHECK ENGINE light comes on, a noticeable
reduction in the vehicle’s performance may occur.
If the
REDUCED ENGINE POWER message is displayed but
there is no reduction
in performance, proceed to your
destination. The performance may be reduced the next
time the vehicle is driven. The
vehicle may be driven at a reduced speed while the
REDUCED ENGINE POWER message is displayed,
but acceleration and speed may be reduced. Anytime the
CHECK ENGINE light stays on, the vehicle should be
taken to an authorized Chevrolet dealer as soon as
possible for diagnosis and repair.
Also, refer to “Malfunction Indicator Lamp” (Check
Engine Light) in the Index.
If the REDUCED ENGINE
POWER message is displayed in combination with the
COOLANT OVER TEMP message, see “Engine
Overheating” in the Index.
SERVICE VEHICLE SOON: If this message appears
on the DIC, there may be an electrical or another system
problem with your vehicle. Have your vehicle checked
by your dealer if this message keeps appearing.
CHARGE SYSTEM FAULT Press RESET to
acknowledge that you have read the message and to
remove it from the display. The message will reappear
every
10 minutes until this condition changes. You will
hear two chimes when this message is displayed.
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