Engine PONTIAC GRAND PRIX 1998 Owner's Manual

Warning Lights, Gages
and Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough
to cause an
expensive repair or replacement. Paying attention to
your warning lights and gages could also save you or
others from injury.
Warning lights come on when there may be or is
a
problem with one of your vehicle’s functions. As you
will see in the details on the next few pages, some
warning lights come on briefly when you
start the
engine just to let you know they’re working. If you are
familiar with this section, you should not be alarmed when
this happens.
Gages can indicate when there may
be or is a problem
with one
of your vehicle’s functions. Often gages and
warning lights work together to let
you know when
there’s a problem with your vehicle. When one
of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to
do about it. Please follow this manual’s advice.
Waiting to
do repairs can be costly -- and even
dangerous.
So please get to know your warning lights
and gages. They’re a big help.
Your vehicle may
also have a driver information system
that works along with the warning lights and gages. See
“Driver Information System” in the Index.
Safety Belt Reminder Light
When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts, unless
the driver’s safety belt is
already buckled.
14
The safety belt light will
also come
on and stay on
for about
20 seconds, then
it will flash for about
55 seconds. If the driver’s
belt is already buckled,
neither
the chime nor the
light will come on.
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Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows
SRS AIR BAG. The system checks
the air bag’s electrical system for malfunctions. The
light tells you if there is
an electrical problem. The
system check includes the
air bag sensors, the air bag
modules, the wiring and
the crash sensing and
diagnostic module. For more information
on the air bag
system, see
“Air Bag” in the Index.
This light will come on
when you start your engine,
and it will flash for a few
should go out. This means
the system is ready.
SRS AI R BAG seconds. Then the light
If the air bag readiness light stays on after you start the
engine or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
The air bag readiness light should flash for a few
seconds when you turn the ignition key to RUN. If the
light doesn’t come on then, have it fixed so it will be
ready to warn you if there is a problem.
Charging System Light
Ifl
The charging system light
will come on briefly when
you
turn on the ignition, as
a check to show you
it’s
working. Then it will go
out.
If it stays on, or comes on while you are driving, you
may have a problem with the charging system. It could
indicate that you have a loose
drive belt or another
electrical problem. Have it checked right away. Driving
while
this light is on could drain your battery.
If you must drive a short distance with the light on, be
certain to turn
off all your accessories, such as the radio
and air conditioner.

Anti-Lock Brake System Warning Light
With the anti-lock brake system, this light will
come on when you start your engine and it will
stay on for three seconds.
That’s normal.
If the anti-lock brake system warning light stays on
longer than normal after you’ve started your engine, turn
the ignition
off. Or, if the light comes on and stays 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
light is on and the regular brake system warning light
isn’t on, you still have brakes, but you don’t have
anti-lock brakes. Adjust your driving accordingly.
The anti-lock brake system warning light should come
on briefly when you turn the ignition key to
RUN. If the
light doesn’t come on then, have
it fixed so it will be
ready to warn you if there is a problem.
Traction Control System Warning Light
(3800 Supercharged Engine Only)
1
The traction control system
warning light may come
on
for the following reasons: TCS
OFF
0
0
If you turn the system off by pressing the TCS button
located on
the far right hand side of the Driver
Information Center, the warning light
will come on and
stay on. To turn the system back on, press the button
again. The warning light should go
off. (See “Traction
Control System”
in the Index for more information.)
If there’s a brake system problem that is specifically
related to traction control, the traction control system will turn
off and the warning light will come on. If
your brakes begin to overheat, the traction control
system will turn
off and the warning light will come
on until your brakes cool down.
If
the traction control system warning light comes on
and stays on for an extended period of time when
the
system is turned on, your vehicle needs service.
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Enhanced Traction System Warning Light
(3100 or 3800 Engine)
TRAC
OFF
The Enhanced Traction System warning light may come
on for the following reasons:
0 If you turn the system off by pressing the TRAC
button on the far right hand side of the Driver
Information Center, the warning light will come on
and stay on. To
turn the system back on, press the
button again. The warning light should
go off. (See
“Enhanced Traction System” in the Index
for more
information.)
If the Enhanced Traction System warning light
comes on and stays on for
an extended period of
time when the system is turned on, your vehicle
needs service. Adjust your driving accordingly.
If the traction control system is affected by an
engine-related problem, the system will turn off and
the warning light will come on. When
this warning light is on, the
system will not limit
wheel spin. Adjust your driving accordingly.
Low Traction Light
LOW
TRAC
When your anti-lock system
is adjusting brake pressure
to help avoid a braking skid,
this light will come on.
See
“Anti-Lock Brake System
Warning Light” earlier in
this section.
If you have the Enhanced Traction System or the
Traction Control System, this light will
also come on
when the system
is limiting wheel spin. You may feel or
hear the system working, but
this is normal. Slippery
road conditions may exist if the low traction light comes
on,
so adjust your driving accordingly. The light will
stay on for a few seconds after the traction system stops
limiting wheel spin. See “Enhanced Traction System”
or
“Traction Control System” in the Index.
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The low traction light also comes on briefly when you
turn the ignition key to RUN. If the light doesn’t come
on then, have
it fixed so it will be there to tell you when
the anti-lock brake system, Traction Control System or Enhanced Traction System is active.
Malfunction Indicator Lamp
(Service Engine Soon Light)
SERVICE
ENGINE SOON
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
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:
0
a
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.
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.
0 Avoiding hard accelerations.
Avoiding steep uphill grades.
0 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 fuel 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.
Have you recently changed brands of fuel?
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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 Warning Light
If you have a problem with
your oil pressure, this light
may stay
on after you start
your engine, or come
on
when you are driving.
This indicates that oil is not going through your engine
quickly enough to keep it lubricated. The engine could
be low on oil or could have some other oil problem.
Have it fixed right away.
The
oil light could also come on in two other situations:
0
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
ignition 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.
If you make
a hard stop, the light may come on for a
moment. This is normal.
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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.
I NOTICE:
Damage to your engine from neglected oil problems
can be costly and is not covered by
your warranty.
PERF
SHIFT
This light comes on when
you press the performance
shift button (located on the
console shift) to indicate
that your vehicle is in
performance shifting mode.
See “Performance Shifting” in
the Index.
Low Oil Level Light
LOW OIL
LEVEL
Your engine is equipped
with
an oil level monitoring
system. When the ignition
key is turned
to ON, the
LOW OIL LEVEL light
will briefly flash.
If the light does not flash, have it fixed so it will be
ready to
warn you if there’s a problem.
If the light stays on, stop the vehicle on a level surface
and turn the engine off. Check the oil level using the
engine oil dipstick. (See “Engine Oil” in the Index.)
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The oil level monitoring system only checks oil level during the brief period between key on and engine
crank. It
does not monitor engine oil level when the
engine is running. Additionally, an oil level check is
only performed if the engine has been turned
off for a
considerable period of time, allowing the oil normally in
circulation to drain back into the oil pan.
Engine Coolant Temperature Light
TEMP
This light tells you that your
engine coolant has
overheated or your radiator
cooling fan
is not working.
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.
In “Problems on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.
Engine Coolant Temperature Gage
You have a gage that shows
the engine coolant
temperature. If the gage
pointer moves into
the red
area, your engine is too hot!
That reading means the sarne thing as the warning light.
It 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.
In “Problems on the Road,”
this manual shows what to
do. See “Engine Overheating” in the Index.
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Low Coolant Warning Light
If this light comes on,
LOW
your system is low on
coolant and the engine
COOLANT
may overheat.
See “Engine Coolant” in the Index and have your
vehicle serviced as soon
as you can.
Low Washer Fluid Warning Light
This light will come on
when your ignition is on
and the fluid container
LOW
I is low.
I
NOTICE:
Remember, driving without washer fluid can be
dangerous.
A bad mud splash can block your
vision. You could collide with another vehicle.
Check your washer fluid often, and add only the
proper fluid. See “Windshield Washer Fluid” in
the Index.
Trunk Ajar Warning Light
This light will come on if
your trunk is not
completely closed.
AJAR
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