
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 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
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 5-8. 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.
3-34

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, misfiring, 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 fix 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.
3-35

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 briefly 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.
SeeEngine Coolant Temperature Gage on page 3-32
andOil Pressure Gage on page 3-36.
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.
SeeDIC Warnings and Messages on page 3-45
for more information.
3-38

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. SeeCheck
Gages Warning Light on page 3-38, “Fuel Range”
underDIC Controls and Displays on page 3-42, and
DIC 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 fill 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
fill 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 StatesCanada
3-39

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, timer, and outside
air temperature.
B.
r(Fuel Information):Press this button to display
the current fuel and engine oil information.
C.
q(Personalization):Press this button to access
the vehicle personalization menu and customize
the personalization settings on your vehicle.
D.
r(Select):Press this button to reset certain
DIC functions, acknowledge DIC warning messages
and clear them from the DIC, and set your
personalization settings.
3-42

Fuel Information
r
(Fuel Information):Press this button to scroll
through the range, average fuel economy, instant fuel
economy, and engine oil life.
Fuel Range
Press the fuel information button until RANGE appears to
display the remaining distance you can drive without
refueling. It is based on fuel economy and the fuel
remaining in the tank. The display will show FUEL LEVEL
LOW and a chime will sound if the fuel level is low. The
check gages warning light on the instrument panel cluster
will also be illuminated. SeeCheck Gages Warning Light
on page 3-38for more information.
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.
Fuel range cannot be reset.
Average Fuel Economy
Press the fuel information button until AVG. ECON
appears in the display. Average fuel economy is how
many miles per gallon (MPG), kilometers per liter (km/L),
or liters per 100 kilometers (L/100 km) your vehicle is
getting based on current and past driving conditions.
Press and hold the select button while AVG. 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.
Instant Fuel Economy
Press the fuel information button until INST. ECON
appears in the display. Instant fuel economy is
how many miles per gallon (MPG), kilometers per
liter (km/L), or liters per 100 kilometers (L/100 km) your
vehicle is at the particular moment in time. The
instant fuel economy cannot be reset.
3-44

Engine Oil Life
Press the fuel information button until ENGINE OIL LIFE
appears in the display. 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.
Always reset the engine oil life after an oil change. To
reset the engine oil life system, seeEngine Oil Life
System on page 5-16.
The engine oil life reading in the DIC does not replace
the need to maintain your vehicle as recommended
in the Maintenance Schedule in this manual. SeeEngine
Oil on page 5-13,Change Engine Oil Light on
page 3-37, andScheduled Maintenance on page 6-4.
Personalization
q
(Personalization):Press this button to access the
vehicle personalization menu and customize the
personalization settings on your vehicle. SeeDIC
Vehicle Personalization on page 3-52for more
information.
Select
r
(Select):Press this button to reset certain DIC
functions, acknowledge DIC warning messages
and clear them from the DIC, and set your
personalization settings.
DIC Warnings and Messages
Messages are displayed on the DIC to notify the driver
that the status of the vehicle has changed and that
some action may be needed by the driver to correct the
condition. Multiple messages may appear one after
another. Some messages may not require immediate
action but you should press the select button to
acknowledge that you received the message and clear it
from the display. Some messages cannot be cleared
from the display because they are more urgent. These
messages require action before they can be removed
from the DIC display. The following are the possible
messages that can be displayed and some information
about them.
3-45

Fuel Level Low
If the fuel level is low in the vehicle’s gas tank, this
message will appear on the DIC and you will hear a
chime. You will also see the check gages warning light
on the instrument panel cluster. SeeCheck Gages
Warning Light on page 3-38for more information. Refuel
as soon as possible. SeeFilling the Tank on page 5-8
andFuel Gage on page 3-39for more information. Press
the select button to acknowledge and clear the
message from the display.
Hdr (Header) Latch Switch Fault
This message will be displayed on the DIC when trying
to raise or lower the convertible top and there is a
fault with this switch. If the message persists, see your
GM dealer for service.
Manually Open Tonneau
This message will be displayed on the DIC when trying
to raise or lower the convertible top while the
convertible top and roof tonneau are where the system
cannot verify their position. The roof system may
need to be restored manually to a stable position by
fully opening the roof tonneau and boot cover panel. See
Convertible Top on page 2-45for more information.
Oil Pressure Low Stop Engine
{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.
If the oil pressure is low in your vehicle, this message
will be displayed on the DIC. Stop the vehicle as
soon as possible and do not drive it until the cause of
the low oil pressure has been corrected. Check your oil
as soon as possible and have your vehicle serviced
by your GM dealer. SeeEngine Oil on page 5-13andOil
Pressure Gage on page 3-36for more information.
3-48