Red CHEVROLET AVEO 2008 1.G Repair Manual

Speedometer and Odometer
Your speedometer lets you see your speed in both
miles per hour (mph) and kilometers per hour (km/h).
Your odometer shows how far your vehicle has
been driven, in either miles (used in the United States)
or kilometers (used in Canada).
Trip Odometer
The trip odometer can record the number of miles, used
in the United States, or kilometers, used in Canada,
traveled for up to two trips.
You can cycle between the odometer and trip
odometers A and B by pressing the reset button
located in the lower right area of the speedometer.
By pressing the reset button, you can tell how many miles
or kilometers have been recorded on either Trip A or
Trip B since you last set the trip odometer back to zero.
To reset each trip odometer to zero, press and hold
the reset button. The reset button resets only the
trip odometer that is being displayed. Each trip
odometer must be reset individually.
Tachometer
The tachometer displays your engine speed in
revolutions per minute (rpm).
Notice:If you operate the engine above 6,500 rpm,
your vehicle could be damaged, and the damages
would not be covered by your warranty. Do not
operate the engine with the tachometer above
6,500 rpm.Hatchback
Sedan
3-29

When you start the vehicle, the passenger airbag status
indicator will light for several seconds as a system check.
Then, after several more seconds, if the off symbol is lit
on the passenger airbag status indicator, it means that
the passenger sensing system has turned off the right
front passenger’s frontal airbag and seat-mounted side
impact airbag (if equipped).
{CAUTION:
If the off symbol in the passenger airbag
status indicator does not come on when you
have a rear-facing child restraint installed in
the right front passenger’s seat, it means that
the passenger sensing system has not turned
off the passenger’s frontal airbag and side
airbag (if equipped). A child in a rear-facing
child restraint can be seriously injured or killed
if the right front passenger’s airbag or airbags
inate. This is because the back of the
rear-facing child restraint would be very close
to the inating airbag or airbags. Do not use
a rear-facing child restraint in the right front
passenger’s seat unless the airbag or airbags
have been turned off.If the off symbol is not lit on the passenger airbag status
indicator, it means that the right front passenger’s
frontal airbag and seat-mounted side impact airbag
(if equipped) are enabled (may inflate).
{CAUTION:
If the airbag readiness light in the instrument
panel cluster ever comes on and stays on,
it means that something may be wrong with
the airbag system. If this ever happens, have
the vehicle serviced promptly, because an
adult-size person sitting in the right front
passenger’s seat may not have the protection
of the airbag(s). SeeAirbag Readiness Light
on page 3-30for more on this, including
important safety information.
3-32

Charging System Light
This light will come on
briefly when the ignition
is turned on, and the
engine is not running,
as a check to show
you it is working.
It should go out when the engine is started. If it stays
on, or comes on while you are driving, you may have
a problem with the electrical charging system. Have
it checked by your dealer/retailer. 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 to help reduce the drain on the battery.
Brake System Warning Light
Your vehicle’s hydraulic brake system is divided into
two parts. If one part is not 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.
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 does not fully
release. If it stays on after your parking brake is fully
released, it means you have a brake problem.
United StatesCanada
3-33

Hold Mode Light
If your vehicle has this
feature, this light comes
on when the hold mode
is active.
If the HOLD mode light flashes, have your vehicle
checked. See “Hold Mode” underAutomatic
Transmission Operation on page 2-21for more
information.
Engine Coolant Temperature Gage
Your vehicle has an engine coolant temperature gage.
With the ignition turned to ON/RUN, this gage shows
the engine coolant temperature.
If the gage pointer moves into the red area, your
engine is too hot. 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.
SeeEngine Overheating on page 5-25.
United States HatchbackCanada Hatchback
United States SedanCanada Sedan
3-35

Tire Pressure Light
Your vehicle has a tire
pressure light.
This light comes on briefly when the engine is started
and provides information about tire pressures and
the Tire Pressure Monitoring System.
When the Light is Solid
This indicates that one or more of your tires are
significantly underinflated.
Stop and check your tires as soon as it is safe to do so.
If underinflated, inflate to the proper pressure.
SeeTires on page 5-50for more information.
When the Light Flashes First and Then is
Solid
This indicates that there may be a problem with the Tire
Pressure Monitor System. The light will flash for about a
minute and then stay on solid for the remainder of the
ignition cycle. This sequence will repeat with every
ignition cycle. SeeTire Pressure Monitor System on
page 5-58for more information.
Malfunction Indicator Lamp
Check Engine Light
A computer system called OBD II (On-Board
Diagnostics-Second Generation) monitors operation of
the fuel, ignition, and emission control systems. It makes
sure 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 an OBD II
problem and service
is required.
Malfunctions often are indicated by the system before
any problem is apparent. This can 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, the emission controls might
not work as well, your vehicle’s fuel economy might
not be as good, and the engine might not run as
smoothly. This could lead to costly repairs that
might not be covered by your warranty.
3-36

Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system of your
vehicle or replacement tires that do not match your
vehicle’s original tires can affect your vehicle’s
emission controls and can cause this light to come
on. Modications to these systems could lead to
costly repairs not covered by your warranty. This
could also result in a failure to pass a required
Emission Inspection/Maintenance test. See
Accessories and Modifications on page 5-3.
When the ignition is turned to ON/RUN, this light comes
on and should go out after a few seconds as a check
to show it is working. If the light does not come on, have
it repaired. This light also comes on during a malfunction
in one of two ways:
•Light Flashing— A misfire condition has been
detected. A misfire increases vehicle emissions
and could damage the emission control system
on your vehicle. Diagnosis and service might
be required.
•Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service might be required.
If the Light Is Flashing
The following can prevent more serious damage to your
vehicle:
•Reduce vehicle speed.
•Avoid hard accelerations.
•Avoid 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 see your dealer/retailer for service as
soon as possible.
3-37

If the Light Is On Steady
You might 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. SeeFilling the Tank on page 5-7. The
diagnostic system can determine if the fuel cap has
been left off or improperly installed. A loose or missing
fuel cap allows 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 vehicle’s electrical system might be wet.
The condition is usually 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
Gasoline Octane on page 5-5. Poor fuel quality causes
the engine not to run as efficiently as designed. You
might 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 might 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,
your dealer/retailer can check the vehicle. Your dealer/
retailer has the proper test equipment and diagnostic
tools to fix any mechanical or electrical problems that
might have developed.
Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
might 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.
3-38

This can happen if you have recently replaced the battery
or if the battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This can 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 dealer/retailer can prepare the vehicle for
inspection.
Oil Pressure Light
If your vehicle has low
engine oil pressure, this
light will stay on after
you start your engine,
or come on when you
are driving.
This indicates that your engine is not receiving enough
oil. The engine could be low on oil, or could have
some other oil problem. Have it fixed immediately
by your dealer/retailer.The oil light could also come on in three other situations:
•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. The light will go out when you turn the
ignition on. If it does not 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.
{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.
3-39

Passenger Airbag Status Indicator
(Hatchback)
Your vehicle has the passenger sensing system.
If you have a hatchback, the airbag off symbol will be
visible in the Secondary Information Center (SIC) during
the system check.
When you start the vehicle, the passenger airbag status
indicator will light for several seconds as a system check.
Then, after several more seconds, if the off symbol is lit
on the passenger airbag status indicator, it means that
the passenger sensing system has turned off the right
front passenger’s frontal airbag and seat-mounted side
impact airbag (if equipped).
{CAUTION:
If the off symbol in the passenger airbag
status indicator does not come on when you
have a rear-facing child restraint installed in
the right front passenger’s seat, it means that
the passenger sensing system has not turned
off the passenger’s frontal airbag and side
airbag (if equipped). A child in a rear-facing
child restraint can be seriously injured or
killed if the right front passenger’s airbag or
airbags inate. This is because the back of the
rear-facing child restraint would be very close
to the inating airbag or airbags. Do not use
a rear-facing child restraint in the right front
passenger’s seat unless the airbag or airbags
have been turned off.
If the off symbol is not lit on the passenger airbag
status indicator, it means that the right front passenger’s
frontal airbag and seat-mounted side impact airbag
(if equipped) are enabled (may inflate). United
States – Hatchback
Canada – Hatchback
3-46

Malfunction Indicator Lamp
Check Engine Light
A computer system called OBD II (On-Board
Diagnostics-Second Generation) monitors operation of
the fuel, ignition, and emission control systems. It makes
sure 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 an OBD II
problem and service
is required.
Malfunctions often are indicated by the system before
any problem is apparent. This can 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, the emission controls
might not work as well, your vehicle’s fuel economy
might not be as good, and the engine might not
run as smoothly. This could lead to costly repairs
that might not be covered by your warranty.Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system
of your vehicle or replacement tires that do not
match your vehicle’s original tires can affect your
vehicle’s emission controls and can cause this light
to come on. Modications to these systems could
lead to costly repairs not covered by your warranty.
This could also result in a failure to pass a required
Emission Inspection/Maintenance test. See
Accessories and Modifications on page 5-3.
When the ignition is turned to ON/RUN, this light comes
on and should go out after a few seconds as a check
to show it is working. If the light does not come on, have
it repaired. This light also comes on during a malfunction
in one of two ways:
•Light Flashing— A misfire condition has been
detected. A misfire increases vehicle emissions
and could damage the emission control system
on your vehicle. Diagnosis and service might
be required.
•Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service might be required.
3-49