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 247and
Part A: Scheduled Maintenance Services on
page 336.
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 252.
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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BOOST (Turbo Only)
If your vehicle has this feature, press the
information button until BOOST is displayed. This
mode shows a graphic that indicates the amount
of boost the engine is receiving in either
pounds per square inch (psi) or kilopascals (kPa).
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 134for 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 252andPart A: Scheduled Maintenance
Services on page 336for more information.
148
Scheduled Maintenance
The services shown in this schedule up to
100,000 miles (160 000 km) should be repeated
after 100,000 miles (160 000 km) at the same
intervals for the life of this vehicle. The services
shown at 150,000 miles (240 000 km) should
be repeated at the same interval after
150,000 miles (240 000 km) for the life of
this vehicle.
SeePart B: Owner Checks and Services on
page 346andPart C: Periodic Maintenance
Inspections on page 351.
Footnotes
†The U.S. Environmental Protection Agency or
the California Air Resources Board has determined
that the failure to perform this maintenance item
will not nullify the emission warranty or limit
recall liability prior to the completion of the
vehicle’s useful life. We, however, urge that all
recommended maintenance services be performed
at the indicated intervals and the maintenance
be recorded.*If your vehicle has a Driver Information Center
(DIC), it also has the GM Oil Life System, a
computer system that lets you know when to
change the oil and lter. This is based on engine
revolutions and engine temperature and not
on mileage. Based on driving conditions, the
mileage at which an oil change will be indicated
can vary considerably. For the oil life system
to work properly, you must reset the system every
time the oil is changed.
When the system has calculated that oil life has
been diminished, it will indicate that an oil change
is necessary. A CHANGE OIL SOON message
on the Driver Information Center (DIC) will
come on. See DIC Warnings and Messages on
page 148. Change your oil as soon as possible
within the next two times you stop for fuel.
See Engine Oil on page 247. It is possible that,
if you are driving under the best conditions, the
oil life system may not indicate that an oil change
is necessary for over a year. However, your
engine oil and lter must be changed at least
once a year and at this time the system must be
reset. It is also important to check your oil regularly
and keep it at the proper level.
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