2004 CHEVROLET IMPALA ignition

This gage shows the engine coolant temperature.
It also provides an indicator of how hard your vehicle is
working. During the majority of the operation, the
gage will read 210°F (100°C) or less.
If you are pulling a load or going up hills, it is normal
for the temperature to uctuate and approach the
250°F (122°C) mark. When the gage reads greater than
250°F (122°C), the HOT COOLANT TEMP light will
be illuminated in the message center and a chime
will sound continuously. If the gage reaches the
260°F (125°C) mark, it indicates that the cooling
system is working beyond its capacity.
SeeEngine Overheating on page 5-32.Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems.United States
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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:Modications made to the engine,
transaxle, exhaust, intake 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 this light to come on.
Modications 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.
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 does not come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
Light Flashing— A misre condition has been
detected. A misre increases vehicle emissions
and may damage the emission control system on
your vehicle. Diagnosis and service may be
required.
Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
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The fuel gage, when the ignition is on, tells you about
how much fuel you have left in your tank.
The gage will rst 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 ll 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 ll the tank.
The gage goes back to empty when you turn off the
ignition.
The gage pointer moves while cornering, braking or
acceleration.
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.
Service Traction System Warning
Message
If your vehicle is equipped with the traction control
system and this message appears when you are driving,
there is a problem with your traction control system
and your vehicle is in need of service.United States
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When this message is displayed, the system will not
limit wheel spin. The message will stay on for
60 seconds. Four chimes will also be heard. Adjust your
driving accordingly.
When the ignition is turned off, this message will be
displayed again for three seconds to remind you
that your traction control system is not working properly.
Be sure to have your vehicle serviced right away.Traction Active Message
If your vehicle is equipped with the traction control
system, this message will stay on a few seconds after
the traction system stops limiting wheel spin.
This message will appear when the traction control
system is limiting wheel spin.United States
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Low Engine Oil Level Message
Your vehicle may be equipped with a low engine oil
level message.
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.
When the ignition is turned off, this message will be
displayed again for three seconds to remind you
that your engine oil level is low. Be sure to have your
vehicle serviced right away.
SeeEngine Oil on page 5-18on how to check the oil
level and for what type of oil to add.
Change Engine Oil Message
When this message comes on, it means that service is
required for your vehicle. It will appear for 60 seconds.
SeeScheduled Maintenance on page 6-4and
Engine Oil on page 5-18for more information.
Once the engine oil has been changed, the CHANGE
ENGINE OIL message must be reset. Until it is
reset, this message will be displayed for 60 seconds
each time you start the engine. For more information on
resetting the system, see “How to Reset the Change
Engine Oil Message” underEngine Oil on page 5-18. United States
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Low Tire Message
Your vehicle may be equipped with the tire pressure
system which monitors the ination pressure of the tires.
After the system has “learned” the tire pressure with
properly inated tires, the LOW TIRE PRESSURE
message will be displayed and four warning chimes will
sound if the tire pressure in one tire becomes 12 psi
(83 kPa) lower than the other three tires.
When you have checked the tire pressures, be sure to
reset the tire ination monitor. See “Tire Pressure
Monitor System” underTires on page 5-64.
Door Ajar Warning Message
This message will appear if one of the doors is not
completely closed and the ignition is in ON.
If you are in a forward or reverse gear position you will
also hear four chimes. United States
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Trunk Ajar Warning Message
This message will appear if the trunk is not completely
closed and the ignition is in ON.
If you are in a forward or reverse gear position you will
also hear four chimes.
Security Message
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 for
service. SeePasslock®on page 2-16for more
information. United States
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Low Washer Fluid Warning Message
This message is displayed when the vehicle is low on
windshield washer uid.
The message is only displayed for 60 seconds at the
start of each ignition cycle. For more information
seeWindshield Washer Fluid on page 5-46.
When the ignition is turned off, this message will be
displayed again for three seconds to remind you
that your washer uid is low. Be sure to rell the
washer uid tank right away.
Low Fuel Warning Message
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. United States
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