2005 CHEVROLET IMPALA engine

Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need to know to help your
vehicle pass an inspection:
Your vehicle will not pass this inspection if the Check
Engine light is on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen if
you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and your vehicle
still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
Cruise Control Light
The CRUISE light
comes on whenever you
set your cruise control.
SeeCruise Control
on page 3-11.
Highbeam On Light
This light will come on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on page 3-8.
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Fuel Gage
United States — 3800
Supercharged V6
Engine Cluster
Canada — 3800
Supercharged V6
Engine Cluster
United States — 3400
V6 Engine ClusterUnited States — 3800
V6 Engine Cluster
Canada — 3400 V6
Engine ClusterCanada — 3800 V6
Engine Cluster
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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.
Battery Warning Message
When the vehicle is
started this message will
be displayed for
three seconds.
If the message is displayed when the engine is running,
you may have a problem with your charging system. If
there is a problem with the charging system, four chimes
will sound when the message comes on. The battery
display will also stay on while the key is in ON until the
engine is started.
If the message stays on after starting the engine it could
indicate a problem with the generator drive belt, or
some other charging system problem. Have it checked
right away. Driving with this message on could drain
your battery.
If you must drive a short distance with this message
displayed, it helps to turn off all your accessories. United States
Canada
3-41

Hot Coolant Temperature Warning
Message
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. SeeEngine Coolant on page 5-29,Engine Coolant
Temperature Gage on page 3-34andEngine
Overheating on page 5-32for further information.
Low Oil Pressure Message
This message is displayed in the message center when
the engine oil pressure is low. A chime will sound
continuously, also.
If this occurs, you should have your vehicle serviced
immediately. United StatesCanada
United StatesCanada
3-42

{CAUTION:
Do not keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
Low Engine Oil Level Message
Your vehicle may be equipped with a LOW ENG 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.United States
Canada
3-43

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.
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 5-60. United States
CanadaUnited StatesCanada
3-44

Service Vehicle Soon Message
This message will come on if you have engine problems.
These problems may not be obvious and may not
affect vehicle performance or durability. Consult a
qualied dealership for necessary repairs to maintain
top vehicle performance.
Highbeam Out Warning Message
If this message appears, you may have a problem with
your high-beam headlamps.
The message will stay on about 60 seconds. When the
ignition is turned off, this message will be displayed
again for three seconds to remind you that you
may have a problem with your highbeam-headlamps.
Be sure to check your bulbs right away and replace
them if necessary.
SeeBulb Replacement on page 5-54. United States
CanadaUnited StatesCanada
3-48

Audio System(s)
Notice:Before adding any sound equipment to
your vehicle, such as an audio system, CD player,
CB radio, mobile telephone, or two-way radio, make
sure that it can be added by checking with your
dealer. Also, check federal rules covering mobile
radio and telephone units. If sound equipment can
be added, it is very important to do it properly.
Added sound equipment may interfere with
the operation of your vehicle’s engine, radio, or
other systems, and even damage them. Your
vehicle’s systems may interfere with the operation
of sound equipment that has been added.
Notice:The chime signals related to seat belts,
parking brake, and other functions of your vehicle
operate through the GM radio/entertainment system.
If that equipment is replaced or additional
equipment is added to your vehicle, the chimes may
not work. Make sure that replacement or additional
equipment is compatible with your vehicle before
installing it.
Figure out which audio system is in your vehicle, nd
out what your audio system can do, and how to operate
all of its controls.Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, the audio system can be
played even after the ignition is turned off. SeeRetained
Accessory Power (RAP) on page 2-17for more
information.
Setting the Time
Press and hold the HR or MN buttons for two seconds.
The clock symbol will appear on the display. Then
press and hold HR until the correct hour appears on the
display. AM or PM will appear for morning or evening
hours. Press and hold MN until the correct minute
appears on the display. The time can be set with the
ignition on or off.
To synchronize the time with an FM station broadcasting
Radio Data System (RDS) information, press and
hold HR and MN at the same time for two seconds
until UPDATED and the clock symbol appear on
the display. If the time is not available from the station,
NO UPDAT will appear on the display.
RDS time is broadcast once a minute. After tuning to an
RDS broadcast station, it may take a few minutes for
the time to update.
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