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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 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, mis®ring, 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 GM dealer can prepare the
vehicle for inspection.
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Oil Pressure Gage
The oil pressure gage shows the engine oil pressure
in psi (pounds per square inch) when the engine
is running. Canadian vehicles indicate pressure in
kPa (kilopascals).
{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.
Oil pressure may vary with engine speed, outside
temperature and oil viscosity, but readings above the
low pressure zone indicate the normal operating range.
A reading in the low pressure zone may be caused
by a low oil level or other oil-related problems. See your
dealer for service immediately.
United States
Canada
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Change Engine Oil Light
This light is displayed
when the engine oil
needs to be changed.
Once the engine oil has been changed, the light must
be reset. Until it is reset, the light will be displayed when
the engine is on. For more information on resetting
the system, see
Engine Oil Life System on page 5-16.
See alsoScheduled Maintenance on page 6-4.
Security Light
This light will come on
brie¯y when you turn
the key to START.
The light will stay on
until the engine starts. If the light ¯ashes, the Passlock
žsystem has entered a
tamper mode. If the vehicle fails to start, seePasslockž
on page 2-15.
If the light comes on continuously while driving and
stays on, there may be a problem with the Passlock
ž
system. Your vehicle will not be protected by Passlockž,
and you should see your dealer.
Also, see
Content Theft-Deterrent on page 2-13for
additional information regarding the security light.
Cruise Control Light
This light comes on
whenever you set your
cruise control.
The light will go out when the cruise control is
turned off. See
Cruise Control on page 3-9for
more information.
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Reduced Engine Power Light
This light is displayed
when a noticeable
reduction in the vehicle's
performance may occur.
The vehicle may be driven at a reduced speed when
the reduced engine power light is on but acceleration
and speed may be reduced. The performance may
be reduced until the next time you drive your vehicle.
If this light stays on, see your dealer as soon as possible
for diagnosis and repair.
This light may also come on if there is a problem with
the Throttle Actuator Control (TAC) system. If this
happens, take the vehicle in for service as soon as
possible.
Highbeam On Light
This light comes on
whenever the high-beam
headlamps are on.
Check Gages Warning Light
The Check Gages light will
come on brie¯y when you
are starting the engine.
If the light comes on and stays on while you are
driving, check your coolant temperature and engine oil
pressure gages to see if they are in the warning
zones. See
Engine Coolant Temperature Gage on
page 3-32andOil Pressure Gage on page 3-36.
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When the fuel level is low in your vehicle, the check
gages light will come on and a chime will sound. You
will also see a FUEL LEVEL LOW message on the DIC.
See
DIC Warnings and Messages on page 3-45for
more information.
Fuel Gage
When the ignition is on, the fuel gage tells you about
how much fuel you have remaining.
A chime will sound and the check gages warning
light will come on when your fuel level is low. FUEL
LEVEL LOW will appear on the DIC display. See
Check
Gages Warning Light on page 3-38, ªFuel Rangeº under
DIC Controls and Displays on page 3-42, andDIC Warnings and Messages on page 3-45for
more information.
Here are four things that some owners ask about. None
of these show a problem with your fuel gage:
·At the gas 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.
United States
Canada
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Auxiliary Gage Package
A. Voltmeter Gage
B. Delivered Torque Gage
C. Outside Temperature Gage
Your vehicle may have an auxiliary gage package
located at the front of the center console.
Voltmeter Gage
This gage (A) is located
on the left side of the
gage package.
When your engine is not running, but the ignition is in
RUN, this gage shows your battery's state of charge in
DC volts.
When the ignition is on and the engine is running, the
gage shows the condition of the charging system.
Readings between the low and high warning zones
indicate the normal operating range.
Readings in the low warning zone may occur when a
large number of electrical accessories are operating in
the vehicle and the engine is left at an idle for an
extended period. This condition is normal since the
charging system is not able to provide full power
at engine idle. As engine speeds are increased, this
condition should correct itself as higher engine speeds
allow the charging system to create maximum power.
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You can only drive for a short time with the reading in
either warning zone. If you must drive while the gage is
in the warning zone, turn off all unnecessary
accessories.
Readings in either warning zone indicate a possible
problem in the electrical system. Have the vehicle
serviced as soon as possible.
Delivered Torque Gage
This gage (B) is located in
the center of the gage
package.
This gage displays the delivered torque for the vehicle.
Outside Temperature Gage
This gage (C) is located on
the right side of the gage
package.
This gage displays the outside temperature.
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Driver Information Center (DIC)
The Driver Information Center (DIC) gives you the
status of many of your vehicle's systems. It is also used
to display driver personalization features and warning/
status messages. The DIC display is located on
the instrument panel cluster. The DIC buttons are
located on the steering wheel.
The DIC comes on when the ignition is on. After a short
delay the DIC will display the current driver and the
information that was last displayed before the engine
was turned off.
If a problem is detected, a warning message will appear
on the display. Be sure to take any message that
appears on the display seriously and remember that
clearing the message will only make the message
disappear, not correct the problem.
DIC Controls and Displays
The DIC has different modes which can be accessed by
pressing the four buttons located on the steering wheel.
The button functions are listed in the following pages.A.
3(Trip Information) : Press this button to
display the odometer, trip odometer, and the timer.
B.
r(Fuel Information) : Press this button to
display the current fuel and engine oil information.
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