service CHEVROLET IMPALA 2007 9.G Owner's Manual

This light will ash for approximately 60 seconds
and then stay on if a problem is detected with
the Tire Pressure Monitor system.
SeeTire Pressure Monitor System on page 360
for more information.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle has 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 beindicated 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 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 296.
185

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.
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
possibleIf 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 302.
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.
186

Oil Pressure Light
{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.This light tells you there
could be a problem with
the engine oil pressure.
The light goes on when you turn your key to RUN or
START. It goes off once you start your engine. That
is a check to be sure the light works. If it does not
come on, be sure to have it xed so it will be there
to warn you if something goes wrong.
When the light comes on and stays on, it means
that oil is not owing through your engine properly.
You could be low on oil and you might have
some other system problem.
188

If your vehicle has these features, the DIC also
displays the compass direction and the outside
air temperature when viewing the trip and fuel
information. The compass direction appears on the
top right corner of the DIC display. The outside air
temperature automatically appears in the bottom
right corner of the DIC display. If there is a problem
with the system that controls the temperature
display, the numbers will be replaced with dashes.
If this occurs, have the vehicle serviced by your
dealer.
The DIC also allows some features to be
customized. SeeDIC Vehicle Customization on
page 208for more information.
DIC Operation and Displays
The DIC has different displays which can be
accessed by pressing the DIC buttons located
on the instrument panel, to the right of the
instrument panel cluster.
DIC Buttons
The buttons are the
trip/fuel, vehicle
information,
customization, and
set/reset buttons.
The button functions
are detailed in the
following pages.
3(Trip/Fuel):Press this button to display the
odometer, trip odometers, fuel range, average
economy, instantaneous economy, Active Fuel
Management™ indicator on vehicles with this
feature, and average speed.
T(Vehicle Information):Press this button to
display the oil life, units, tire pressure readings and
Tire Pressure Monitor (TPM) system programming,
compass zone and compass calibration on
vehicles with this feature, and Remote Keyless
Entry (RKE) transmitter programming.
191

If a low or high tire pressure condition is detected
by the system while driving, a message advising
you to check the pressure in a specic tire
will appear in the display. SeeInation - Tire
Pressure on page 359andDIC Warnings
and Messages on page 199for more information.
If the tire pressure display shows dashes
instead of a value, there may be a problem with
your vehicle. If this consistently occurs, see
your dealer/retailer for service.
Learn Tire Positions
To access this display, the vehicle must be in
PARK (P). After rotating the tires or after replacing
a tire or sensor, the Tire Pressure Monitor
(TPM) system must re-learn the tire positions.
To re-learn the tire positions, seeTire Pressure
Monitor System on page 360. SeeTire Inspection
and Rotation on page 364andDIC Warnings
and Messages on page 199for more information.
Compass Zone
Your vehicle may have this feature. Under certain
circumstances, such as during a long distance
cross-country trip, it will be necessary to
compensate for compass variance and reset the
zone. To change the compass zone through
the DIC, seeDIC Compass on page 197.
Compass Calibration
The compass can be manually calibrated.
To calibrate the compass through the DIC,
seeDIC Compass on page 197.
Remote Key
To access this display, the vehicle must be in
PARK (P). This display allows you to match the
Remote Keyless Entry (RKE) transmitter to
your vehicle. To match an RKE transmitter to
your vehicle, do the following:
1. Press the vehicle information button until
PRESS
VTO RELEARN REMOTE KEY
displays.
2. Press the set/reset button.
The message REMOTE KEY LEARNING
ACTIVE will display.
196

AUTOMATIC LIGHT CONTROL OFF
This message displays when the automatic
headlamps are turned off. SeeExterior Lamps on
page 160for more information.
AUTOMATIC LIGHT CONTROL ON
This message displays when the automatic
headlamps are turned on. SeeExterior Lamps on
page 160for more information.
BATTERY SAVER ACTIVE
This message displays when the system detects
that the battery voltage is dropping beyond a
reasonable level. The battery saver system starts
reducing certain features of the vehicle that
you may be able to notice. At the point that the
features are disabled, this message is displayed.
It means that the vehicle is trying to save the
charge in the battery.Turn off all unnecessary accessories to allow the
battery to recharge.
The normal battery voltage range is
11.5 to 15.5 volts.
CHANGE ENGINE OIL SOON
This message displays when service is required
for the vehicle. See your dealer. SeeEngine Oil on
page 310andScheduled Maintenance on
page 408for more information.
Acknowledging the CHANGE ENGINE OIL SOON
message will not reset the OIL LIFE REMAINING.
That must be done at the OIL LIFE screen
under the vehicle information menu. See “Oil Life”
underDIC Operation and Displays on page 191
andEngine Oil Life System on page 314.
200

ENGINE OIL LOW ADD OIL
This message displays when the vehicle’s engine
oil is low. Fill the oil to the proper level as soon as
possible. SeeEngine Compartment Overview on
page 306for the engine oil ll location. Also, see
Engine Oil on page 310for information on the kind
of oil to use and the proper oil level.
ENGINE OVERHEATED IDLE ENGINE
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible.
Do not increase the engine speed above
normal idling speed. SeeEngine Overheating
on page 323for more information.
This message displays when the engine coolant
temperature is too hot. Stop and allow the vehicle
to idle until it cools down.
ENGINE OVERHEATED STOP ENGINE
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears on
the instrument panel cluster and/or DIC, stop
the vehicle as soon as possible. SeeEngine
Overheating on page 323for more information.
This message displays along with a continuous
chime when the engine has overheated. Stop and
turn the engine off immediately to avoid severe
engine damage. SeeEngine Overheating on
page 323.
ENGINE POWER IS REDUCED
This message displays when the vehicle’s engine
power is reduced. Reduced engine power can
affect the vehicle’s ability to accelerate. If this
message is on, but there is no reduction in
performance, proceed to your destination. The
performance may be reduced the next time the
vehicle is driven. The vehicle may be driven at a
reduced speed while this message is on, but
acceleration and speed may be reduced. Anytime
this message stays on, the vehicle should be taken
to your dealer for service as soon as possible.
202

ERROR
This message displays while viewing the odometer
or trip odometers if there is a problem with the
instrument panel cluster. See your dealer for
service.
FUEL LEVEL LOW
This message displays when your vehicle is low
on fuel. Rell the fuel tank as soon as possible.
SeeFuel Gage on page 190andFilling the Tank
on page 302for more information.
HOOD OPEN
If your vehicle has the remote start feature, this
message displays when the hood is not closed
properly. When this message appears, make sure
that the hood is closed completely. SeeHood
Release on page 305.
ICE POSSIBLE DRIVE WITH CARE
This message displays when the outside air
temperature is cold enough to create icy road
conditions. Adjust your driving accordingly.
LEFT REAR DOOR OPEN
This message displays when the driver’s side rear
door is not closed properly. When this message
appears, make sure that the driver’s side rear door
is closed completely.
OIL PRESSURE LOW STOP ENGINE
Notice:If you drive your vehicle while
the engine oil pressure is low, severe engine
damage may occur. If a low oil pressure
warning appears on the Driver Information
Center (DIC), stop the vehicle as soon as
possible. Do not drive the vehicle until the
cause of the low oil pressure is corrected. See
Engine Oil on page 310for more information.
This message displays when the vehicle’s
engine oil pressure is low. The oil pressure light
also appears on the instrument panel cluster.
SeeOil Pressure Light on page 188.
Stop the vehicle immediately, as engine damage
can result from driving a vehicle with low oil
pressure. Have the vehicle serviced by your dealer
as soon as possible when this message is
displayed.
203

PASSENGER DOOR OPEN
This message displays when the front passenger’s
door is not closed properly. When this message
appears, make sure that the front passenger’s
door is closed completely.
REMOTE KEY LEARNING ACTIVE
This message displays while you are matching
a Remote Keyless Entry (RKE) transmitter to your
vehicle. See “Matching Transmitter(s) to Your
Vehicle” underRemote Keyless Entry (RKE)
System Operation on page 91andDIC Operation
and Displays on page 191for more information.
REPLACE BATTERY IN REMOTE KEY
This message displays when the battery in
the Remote Keyless Entry (RKE) transmitter
needs to be replaced. To replace the battery,
see “Battery Replacement” underRemote Keyless
Entry (RKE) System Operation on page 91.
RIGHT REAR DOOR OPEN
This message displays when the passenger’s
side rear door is not closed properly. When this
message appears, make sure that the passenger’s
side rear door is closed completely.
SERVICE A/C (Air Conditioning)
SYSTEM
This message displays when the electronic
sensors that control the air conditioning and
heating systems are no longer working. Have the
climate control system serviced by your dealer
if you notice a drop in heating and air conditioning
efficiency.
SERVICE AIR BAG
This message displays when there is a problem
with the airbag system. Have your vehicle serviced
by your dealer immediately. SeeAirbag Readiness
Light on page 178for more information.
204

SERVICE BATTERY CHARGING
SYSTEM
This message displays when there is a problem
with the generator and battery charging systems.
Driving with this problem could drain the battery.
Turn off all unnecessary accessories. Stop
and turn off the vehicle as soon as it is safe to do
so. Have the electrical system checked by your
dealer immediately.
SERVICE BRAKE SYSTEM
This message displays when service is required
on the brake system. Have the brake system
serviced by your dealer as soon as possible.
The brake system warning light also appears on
the instrument panel cluster when this message
appears on the DIC. SeeBrake System Warning
Light on page 181.
SERVICE POWER STEERING
This message displays when a problem is
detected with the power steering system. When
this message is displayed, you may notice that the
effort required to steer the vehicle increases or
feels heavier, but you will still be able to steer the
vehicle. Have your vehicle serviced by your
dealer immediately.
SERVICE THEFT SYSTEM
This message displays when there is a problem
with the theft-deterrent system programmed in the
key. A fault has been detected in the system
which means that the system is disabled and it is
not protecting the vehicle. The vehicle usually
restarts; however, you may want to take the
vehicle to your dealer before turning off the engine.
SeePASS-Key
®III+ Operation on page 109for
more information.
205