2007 CHEVROLET COBALT fuel

Notice:If you keep driving your vehicle with
this light on, after awhile, 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,
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. SeeAccessories
and Modifications on page 280.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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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 ashing and remains on steady,
see “If the Light Is On Steady” following.
If the light continues to ash, 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 ashing, follow the previous steps,
and see your dealer for service as soon as
possible.
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. SeeFilling the Tank on page 285.
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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Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 283. 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, misring, 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, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.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 dealer can prepare the vehicle for inspection.
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Security Light
For information
regarding this light,
seeTheft-Deterrent
Systems on page 107.
Fog Lamp Light
Your vehicle may have
a fog lamps light. It will
come on when the
fog lamps are in use.
The light will go out when the fog lamps are
turned off. SeeFog Lamps on page 154for
more information.
Highbeam On Light
This light comes on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on
page 146for more information.
Fuel Gage
Your fuel gage tells
you about how much
fuel you have left.
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Here are four things that some owners ask about.
None of these show a problem with your fuel gage:
At the service station, the gas pump shuts off
before the gage reads full.
It takes a little more or less fuel to ll up than
the 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 moves a little when you turn a corner
or speed up.
The gage doesn’t go back to empty when you
turn off the ignition.
For your fuel tank capacity, seeCapacities and
Specications on page 390.
Boost Gage
If equipped, this gage is located near the driver’s
side of the instrument panel cluster.
This gage indicates vacuum during light to
moderate throttle and boost under heavier throttle.
This gage displays the air pressure level in the
intake manifold before it enters the engine’s
combustion chamber.
This gage is automatically centered at zero every
time the ignition is turned to RUN. Actual vacuum or
boost is displayed from this zero point. Changes in
ambient pressure, such as driving in mountains and
changing weather, will slightly change the zero
reading.
United StatesCanada
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Information Modes
q
(Information):Press this button to scroll
through the following vehicle information modes:
Outside Air Temperature and Odometer
Press the information button until the outside
air temperature and the odometer are displayed.
This mode shows the temperature outside of
the vehicle in either degrees Fahrenheit (°F)
or degrees Celsius (°C) and the total distance the
vehicle has been driven in either miles (mi) or
kilometers (km). The outside air temperature will
appear on the left side of the DIC display and
the odometer will appear on the right side of the
display.
To change the DIC display to English or
metric units, see “UNITS” underDIC Vehicle
Personalization on page 186.
TRIP A or TRIP B
Press the information button until TRIP A or
TRIP B is displayed. These modes show the
current distance traveled since the last reset
for each trip odometer in either miles (mi)
or kilometers (km). Both odometers can be
used at the same time.
Each trip odometer can be reset to zero separately
by pressing and holding the reset button for a
few seconds while the desired trip odometer
is displayed.
FUEL RANGE
Press the information button until FUEL RANGE is
displayed. This mode shows the remaining distance
you can drive without refueling in either miles (mi)
or kilometers (km). It is based on fuel economy and
the fuel remaining in the tank.
When the fuel level is low, FUEL RANGE LOW
will display.
The fuel economy data used to determine fuel
range is an average of recent driving conditions.
As your driving conditions change, this data is
gradually updated. The FUEL RANGE mode
cannot be reset.
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ECON (Economy)
Press the information button until ECON is
displayed. This mode shows how many miles
per gallon (mpg) or liters per 100 kilometers
(L/100 km) your vehicle is getting based on
current and past driving conditions.
Press and hold the reset button while ECON is
displayed to reset the average fuel economy.
Average fuel economy will then be calculated
starting from that point. If the average fuel
economy is not reset, it will be continually
updated each time you drive.
AV (Average) SPEED
Press the information button until AV SPEED is
displayed. This mode shows the vehicle’s average
speed in miles per hour (mph) or kilometers per
hour (km/h).
Press and hold the reset button while AV SPEED
is displayed to reset the average vehicle speed.
OIL LIFE
Press the information button until OIL LIFE is
displayed. The engine oil life system shows
an estimate of the oil’s remaining useful life. It will
show 100% when the system is reset after an
oil change. It will alert you to change your oil on a
schedule consistent with your driving conditions.
In addition to the engine oil life system monitoring
the oil life, additional maintenance is recommended
in the Maintenance Schedule in this manual.
SeeEngine Oil on page 293andScheduled
Maintenance on page 396.
Always reset the engine oil life system after an oil
change. See “How to Reset the Engine Oil Life
System” underEngine Oil Life System on
page 298.
COOLANT
Press the information button until COOLANT is
displayed. This mode shows the temperature
of the engine coolant in either degrees
Fahrenheit (°F) or degrees Celsius (°C).
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DIC Warnings and Messages
These messages appear if there is a problem
detected in one of your vehicle’s systems.
A message will clear when the vehicle’s condition
is no longer present. To acknowledge a message
and clear it from the display, press and hold
any of the DIC buttons. If the condition is still
present, the warning message will come back on
the next time the vehicle is turned off and back
on. With most messages, a warning chime sounds
when the message displays. Your vehicle may
have other warning messages.
AUTO (Automatic) LIGHTS OFF
This message displays if the automatic headlamp
system is disabled with the headlamp switch.
AUTO (Automatic) LIGHTS ON
This message displays if the automatic headlamp
system is enabled with the headlamp switch.
BRAKE FLUID
This message displays to inform the driver that the
brake uid level is low while the ignition is on.
The brake system warning light on the instrument
panel cluster also comes on. SeeBrake System
Warning Light on page 171for more information.
Have the brake system serviced by your dealer
as soon as possible.
CHANGE OIL SOON
This message displays when the life of the engine
oil has expired and it should be changed.
When you acknowledge the CHANGE OIL SOON
message by clearing it from the display, you
still must reset the engine oil life system
separately. SeeEngine Oil Life System on
page 298andScheduled Maintenance on
page 396for more information.
CHECK GAS CAP
This message displays if the fuel cap has not
been fully tightened. Recheck the fuel cap to
make sure that it is on properly. A few driving
trips with the cap properly installed should turn
the message off.
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