Tire Pressure Light
The check tire pressure system can alert you to a large
change in the pressure of one tire.
TIRE PRESS
After the system has been
properly calibrated, the
TIRE PRESS light
will come on
if a pressure
difference (low pressure) is detected in one tire.
The light will stay on until you turn off the ignition or
reset (calibrate) the system. See
Check Tire Pressure
System on page
5-64.
The TIRE PRESS light also comes on briefly when you
turn your ignition key to START.
If the light doesn’t
come
on then, have it fixed so it will be there to tell you
if the pressure in a tire is low.
If the anti-lock brake system warning light comes on,
the check tire pressure system may not be working
properly. See your dealer for service. Also, see
Anti-Lock Brake System Warning Light on page 3-43.
On vehicles with the optional Driver Information Center
(DIC), a
CHECK TIRE PRESSURE message replaces
the TIRE
PRESS light when the system detects a
pressure difference (low pressure) in one tire. See
DIC
Warnings and Messages on page 3-60 for more
information.
Malfunction Indicator Lamp
Service Engine Soon Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
SERVICE
ENGl NE SOON control systems.
This system is called OBD
I1 (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 SERVICE
ENGINE SOON light
3-46
The following buttons are on the systems monitor
control panel which is located to the right
of the
instrument panel cluster:
e
e
e
UM (English/Metric): Use this button to change
the display between English and metric units.
TRIP RESET: This button allows you to reset your
trip odometer. To reset the trip odometer, press
the TRIP RESET button. The trip odometer will now
accumulate miles (kilometers) until the next reset.
TIRE PRESS RESET: This button allows you
to reset the check tire pressure system. To reset the
system or for more information, see
Check Tire
Pressure System on page 5-64.
3-56
Battery Volts: On vehicles with a supercharged
engine, press the SELECT button until the display
shows BATTERY VOLTS. If the voltage is normal the
display will show BATTERY
## VOLTS. If the voltage
drops below
10.5 volts for 30 seconds, the battery volts
display will show BATTERY LOW.
If the voltage is
above
16.2 volts for 30 seconds, the battery volts display
will show BATTERY HIGH.
If the display shows the
high or low message, you need to have your batterv
and/or electrical system checked.
GM Oil Life SystemTM: Press the SELECT button until
OIL LIFE appears in the display. The
OIL LIFE
NORMAL display will show an estimate of the oil’s
remaining useful life. When the oil life index is less than
IO%, an ENGINE 0iL CHANGE SOON message wiii
be displayed and the oil life display
will show OIL LIFE
CHANGE. When you have the
oil changed according
to the maintenance schedule, you will have to reset the
Oil Life System. To reset the Oil Life System, see
“When to Change Engine Oil” under
Engine Oil on
page
5- 15.
Tire Pressure Status: Press the SELECT button until
TIRE PRESSURE appears
in the display. TIRE
PRESSURE NORMAL
is displayed when the Check
Tire Pressure System believes your vehicle’s tire
pressures are normal. If a potential problem is detected,
the display will show CHECK TIRE PRESSURE and
the tire pressure status will show TIRE PRESSURE
LOW.
If you see the CHECK TIRE PRESSURE
message, you should stop
as soon as you can and
check all your tires for damage.
(If a tire is flat, see If a
Tire Goes Flat on page
5-72.) Also check the tire
pressure in all four tires as soon as you can. See
lnflation -- Tire Pressure on page 5-62 and Check Tire
Pressure System on page
5-64.
3-59
SERVICE STABILITY SYSTEM - 54: If you ever see
the SERVICE STABILITY SYSTEM message,
it
means there may be a problem with your stability
enhancement system.
If you see this message, try to
reset the system (stop; turn
off the engine; then start the
engine again).
If the SERVICE STABILITY SYSTEM
message still comes on, it means there is a problem.
You should see your dealer for service. Reduce
your speed and drive accordingly.
STABILITY SYSTEM ACTIVE - 55: You may see the
STABILITY SYSTEM ACTIVE message on the Driver
Information Center. It means that an advanced,
computer-controlled system has come on to help your
vehicle cmtinue to
go in the direction in which you’re
steering. This stability enhancement system activates
when the computer senses that your vehicle
is just
starting to spin, as it might
if you hit a patch of ice or
other slippery spot
on the road. When the system is on,
you may hear a noise or feel a vibration in the brake
pedal. This is normal.
When the STABILITY SYSTEM ACTIVE message
is on,
you should continue to steer in the direction you want
to go. The system is designed to help you in bad
weather or other difficult driving situations by making the
most
of whatever road conditions will permit. If the
STABiLiiY SYSTEM ACTIVE message comes on, you’!!
know that something has caused your vehicle to start
to spin,
so you should consider slowing down.
Tire Pressure Status - 144: If you see the CHECK
TIRE PRESSURE message, you should stop as soon as
you can and check all your tires for damage. (If a tire
is flat, see
If a Tire Goes Flat on page 5-72.) Also check
the tire pressure in all four tires as soon as you can.
See
inflation -- lire Pressure on page 5-62 and Check
Tire Pressure System
on page 5-64.
Driver Identifier DIC Display
This feature allows two different drivers to store and
recall their own preferred display mode. The
personalization settings displayed
on the DIC are
determined by the transmitter used to enter the vehicle.
After the uniock button
on a remote keyless entry
transmitter (if equipped) is pressed and the ignition is
in
ON, the DIC will display the identified driver. The
settings can also be changed by briefly pressing one of
the MEMORY buttons located on the driver’s door.
The DIC is used to program information for DRIVER
#I
UNKNOWN DRIVER if they are neither DRIVER #I nor
DRIVER
#2.
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3-61
Check Tire Pressure System
The check tire pressure system can alert you to a large
change in the pressure of one tire. The system won’t
alert you before you drive that a tire is low or flat.
You must begin driving before the system will work
properly.
The CHECK TIRE PRESSURE message will appear on
the Driver Information Center (DIC) or the system
monitor TIRE PRESS light will come on
if pressure
difference (low pressure) is detected in one tire.
The check tire pressure system may not alert you
if:
more than one tire is low,
the vehicle is moving faster than 65 mph (105 km/h),
the system is not yet calibrated,
the compact spare tire is installed,
the tire treadwear is uneven,
tire chains are being used, or
the vehicle is being driven on a rough or
frozen road. If
the anti-lock brake system warning light comes on,
the check tire pressure system may not be working
properly. See your dealer for service. Also, see
Anti-Lock Brake System Warning Light on page 3-43.
The check tire pressure system detects differences
in tire rotation speeds that are caused by changes in tire
pressure. The system can alert you about a low
tire
- but it doesn’t replace normal tire maintenance.
See
Tires on page 5-62.
When the CHECK TIRE PRESSURE message appears
on the Driver Information Center (DIC) or the systems
monitor TIRE PRESS light comes on, you should
stop as soon as you can and check all your tires for
damage. If a tire is flat, see
If a Tire Goes Flat on
page
5-72. Also check the tire pressure in all four tires
as soon as you can. See
Inflation -- Tire Pressure
on page
5-62.
Any time you adjust a tire’s pressure or have one or more
tires repaired or replaced, you’ll need to reset (calibrate)
the check tire pressure system. You’ll also need to reset
the system whenever you rotate the tires, buy new tires
and install or remove the compact spare.
Don’t reset the check tire pressure system without first
correcting the cause of the problem and checking
and adjusting the pressure in all four tires.
If you reset
the system when the tire pressures are incorrect,
the check tire pressure system will not work properly
and may not alert you when a tire is low
or high.
5-64
To reset (calibrate) the system with a Driver Information
Center (DIC):
1.
2.
3.
4.
5.
Turn the ignition switch to ON.
Using the MODE and SELECT buttons, change the The system Completes
the calibration process during
DIC to display TIRE PRESSURE. driving. Calibration time
can take
45 to 90 minutes, ..,
Press and hold the RESET button for about five
seconds.
The display should change to read TIRE
PRESSURE RESET. If TIRE PRESSURE RESET
does not appear on the display after about five
seconds, see your dealer for service.
When you release the button after seeing the TIRE
PRESSURE RESET message, the display will
change to read TIRE PRESSURE NORMAL.
1.
2.
4. Release the TIRE PRESS RESET button and the
system should reset. The TIRE PRESS light will
go out.
To reset (calibrate) the system with a systems monitor:
n 3.
Turn the ignition switch to ON.
Press and hold the TIRE PRESS RESET button for
about five seconds.
should begin to flash.
If the TIRE PRESS light
does not begin to flash after about five seconds, see
your dealer for service.
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depending on your driving habits. After the system has
been calibrated, the system will alert the driver that
a tire is low, up to a maximum speed of
65 mph
(1 05 km/h).
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km).
Any time you notice unusual wear rotate your tires as
soon as possible and check wheel alignment. Also
check for damaged tires or wheels. See
When It Is Time
for New Tires on page 5-67 and Wheel Replacement
on page 5-69 for more information.
Tne purpose
oi reguiar rorarion is io acnieve more
uniform wear for all tires on the vehicle. The first rotation
is the most important. See “Part A: Scheduled
Maintenance Services,” in Section
6, for scheduled
rotation intervals.
5-65
When rotating your tires, always use the correct rotation
pattern shown here.
Don’t include the compact spare tire in your tire rotation.
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the Tire-Loading
Information label.
Reset the check tire pressure system. See
Check Tire
Pressure System on page
5-64.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” under
Capacities and
Specifications on page
5- 100.
Rust or dirt on a wheel, or on the parts to
which
it is fastened, can make wheel nuts
become loose after a time. The wheel could
come
off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if you need
to, to
get all the rust or dirt
off. See “Changing a Flat
Tire”
in the Index.
5-66
Footnotes
t 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 the GM Oil Life SystemTM,
a
computer system lets you know when to change the oil
and filter. 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 oii 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. An ENGINE
OIL CHANGE SOON message
will come on. Change your oil as soon as possible
within the next two times you stop for fuel. 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 filter 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.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles
(5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed. See Engine Oil on
page
5-15 for information on resetting the system.
@ Whenever the tires are rotated, the Check Tire
Pressure §ystem must be reset.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-23.
3,000 Miles (5 000 km)
0 Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
(See footnote
*.)
6,000 Miles (IO 000 km)
u
n U
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
(See footnote
*.)
page 5-65 for proper rotation pattern and additional
information.
(See footnote @.) (See footnote +.)
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9,000 Miles (15 000 km)
U Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
(See footnote
*.)
6-7