2000 CHEVROLET IMPALA ignition

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2-64 Brake System Warning Light
Your vehicle's hydraulic brake system is divided into
two parts. If one part isn't working, the other part can
still work and stop you. For good braking, though, you
need both parts working well.
If the warning light comes on, there is a brake problem.
Have your brake system inspected right away.
United States Canada
This light should come on briefly when you turn the
ignition key to ON. If it doesn't come on then, have it
fixed so it will be ready to warn you if there's a problem.If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push. Or, the pedal may go closer to the floor.
It may take longer to stop. If the light is still on, have the
vehicle towed for service. (See ªAnti
-Lock Brake
System Warning Lightº and ªTowing Your Vehicleº in
the Index.)
CAUTION:
Your brake system may not be working properly
if the brake system warning light is on. Driving
with the brake system 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.
When the ignition is on, the brake system warning light
will also come on when you set your parking brake. The
light will stay on if your parking brake doesn't release
fully. If it stays on after your parking brake is fully
released, it means you have a brake problem.

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2-65 Anti-Lock Brake System Warning
Light (Option)
The anti-lock brake system warning light should come on
for a few seconds when you turn the ignition key to ON.
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, the anti
-lock brake system needs service
and you don't have anti
-lock brakes. The brake pedal may
be harder to push, or it may go to the floor. It may take
longer to stop. Adjust your driving accordingly.
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.
Traction Control System Warning Light
(3800 V6 Engine)
The traction control system warning light may come on
for the following reasons:

If you turn the system off by pressing the traction
control button located on the instrument panel, a
chime will sound and 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 ªTraction Control Systemº 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.

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2-67 Malfunction Indicator Lamp
(Check Engine Light)
United States Canada
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems.
This system is called OBD II (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.
NOTICE:
Modifications made to the engine, transaxle,
exhaust or fuel system of your vehicle or the
replacement of the original tires with other than
those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the CHECK ENGINE light to
come on. Modifications to these systems could
lead to costly repairs not covered by your
warranty. This may also result in a failure to pass
a required Emission Inspection/Maintenance test.

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2-68
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 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.
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 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
ªIf the Light Is On Steadyº 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 ªIf the Light
Is On Steadyº 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 recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See ªFilling Your Tankº in the Index. 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.

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2-71 Fuel Gage
United
States
-Standard
ClusterUnited
States-Optional
Cluster
CanadaThe fuel gage, when the ignition is on, tells you about
how much fuel you have left in your tank.
The gage will first indicate empty before you are out of
fuel, and you should get more fuel as soon as possible.
Here are four situations you may experience with your
fuel gage. None of these indicate a problem with the
fuel gage.

At the gas station, the fuel pump shuts off before the
gage reads full.

It takes a little more or less fuel to fill up than the
fuel gage indicated. For example, the gage may have
indicated the tank was half full, but it actually took a
little more or less than half the tank's capacity to fill
the tank.

The gage goes back to empty when you turn off
the ignition.
Message Center
The message center is located below the temperature
gage or the tachometer gage (if equipped) on the
instrument panel cluster. It gives you important safety
and maintenance facts.

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2-73
HOT COOLANT TEMP
This message is displayed
when the cooling system
temperature gets hot.
A chime will sound
continuously, also.
Check the coolant temperature gage and the coolant
level. See ªEngine Coolantº and ªEngine Coolant
Temperature Gageº in the Index. See ªEngine
Overheatingº in the Index for further information.
LOW COOLANT LEVEL
This message is displayed
when the cooling system is
low on coolant. Four chimes
will also sound.
The engine may overheat. See ªEngine Coolantº in the
Index and have your vehicle serviced as soon as you can.LOW OIL PRESSURE
This message is displayed
when the engine oil pressure
is low. A chime will sound
continuously, also. See
ªLow Oil Pressure Lightº
earlier in this section.
LOW ENG OIL LEVEL
This message is displayed
for 60 seconds at the start
of each ignition cycle when
the engine oil level is low.
Four chimes will
also sound.
See ªEngine Oilº in the Index on how to check the oil
level and for what type of oil to add.

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2-74
CHANGE ENGINE OIL
This message is displayed
when the engine oil needs to
be changed.
When you change the engine oil, be sure to reset the GM
Oil Life System See ªEngine Oil, When to Changeº in
the Index.
DOOR AJAR
This message will appear if
the driver's door or one of
the passenger's doors is not
completely closed and the
ignition is ON. If you are in
a forward or reverse gear
position you will also hear
four chimes.SECURITY
This message is
displayed to monitor the
Passlock

System.
If the security message is displayed continuously while
driving and stays on, there may be a problem with the
Passlock

System. Your vehicle will not be protected by
Passlock, and you should see your dealer.
LOW FUEL
This message is displayed
when your vehicle is low
on fuel. Four chimes will
also sound.
Refer to the fuel gage for a better indication of the
amount of fuel remaining in the fuel tank.

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2-75
LOW WASHER FLUID
This message is displayed
when the vehicle is low on
windshield washer fluid.
The message is only
displayed for 60 seconds
at the start of each
ignition cycle.
For more information see, ªWindshield Washer Fluidº in
the Index.LOW TIRE PRESSUREThe low tire pressure
system monitors the
inflation pressure of your
vehicle's tires.
If one or more of the tires is low, the LOW TIRE
PRESSURE message in the systems monitor will be
displayed and a warning chime will sound.
When you have checked the tire pressures, be sure to
reset the tire pressure monitor. See ªTiresº in the Index.