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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 SERVICE ENGINE SOON or
CHECK ENGINE light comes on to indicate that there
is a problem and service is required. Malfunctions often
will be indicated 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 a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transmission,
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 the SERVICE ENGINE SOON or
CHECK ENGINE light to come on.
Modifications 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.
2-84 TRANS FLUID HOT Message
Your vehicle has a transmission temperature warning
display contained in the message center.
If the transmission fluid
temperature becomes high,
the message center will
display this message.
When the transmission enters the protection mode,
you may notice a change in the transmission shifting
patterns. When the transmission fluid temperature
returns to normal, the display will turn off and the
transmission shifting patterns will return to normal.
NOTICE:
If you keep driving your vehicle with the
transmission TRANS FLUID HOT message
displayed, you can damage the transmission.
This could lead to costly repairs that may not
be covered under your warranty.
The following situations can cause the transmission to
operate at higher temperatures:
Towing a trailer
Hot outside air temperatures
Hauling a large or heavy load
Low transmission fluid level
High transmission fluid level
Restricted air flow to the radiator and the auxiliary
transmission oil cooler.
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures on
a frequent basis, see ªScheduled Maintenanceº in the
Index for the proper transmission maintenance intervals.
2-85 TRANS HOT...IDLE ENGINE Message
Your vehicle has a transmission over-temperature
display contained in the message center.
If this warning message is
displayed, pull the vehicle
off the roadway when it is
safe to do so.
Set the parking brake and place the transmission in
PARK (P). Idle the engine until the message center no
longer displays a message. If idling the engine does not
turn the warning message off after 10 to 15 minutes,
contact your nearest dealer or the GM Roadside
Assistance Center. See ªRoadside Serviceº in the Index.
NOTICE:
If you keep driving your vehicle with the
transmission TRANS HOT...IDLE ENGINE
message displayed, you can damage the
transmission. This could lead to costly repairs
that may not be covered under your warranty.
The following situations can cause the transmission to
operate at higher temperatures:
Towing a trailer
Hot outside air temperatures
Hauling a heavy load
Low transmission fluid level
High transmission fluid level
Restricted air flow to the radiator and the auxiliary
transmission oil cooler.
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures on
a frequent basis, see ªScheduled Maintenanceº in the
Index for the proper transmission maintenance intervals.
2-90 STABILITY SYSTEM ACTIVE Message
You may see the
STABILITY SYSTEM
ACTIVE message on
the message center.
It means that an advanced computer
-controlled system
has come on to help your vehicle continue 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.
It also activates when it senses that your wheels are
spinning, as they might when accelerating on a road
surface that provides inadequate traction. 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.
STABILITY SYSTEM LIMITED Message
The STABILITY SYSTEM
LIMITED message will
turn on when you press
the Stabilitrak button;
see ªInstrument Panelº
in the Index.
While in ªLIMITEDº mode, traction control is disabled
and the stability system is less likely to activate. To limit
wheel spin and realize the full benefits of the stability
enhancement system, you should normally leave
Stabilitrak in its normal operating mode (not the
LIMITED mode). However, you should put Stabilitrak
in LIMITED mode if your vehicle gets stuck in sand,
mud, ice or snow and you want to ªrockº your vehicle to
attempt to free it. See ªRocking Your Vehicleº in the
Index. To exit the LIMITED mode, press the Stabilitrak
button again. The STABILITY SYSTEM LIMITED
message will be displayed whenever the transmission is
in FIRST (1). Traction control will not operate in this
gear. This is normal.
2-93
Annual Mileage
The annual mileage displayed is the mileage
accumulated since the annual mileage was reset.
Pressing the RESET button will reset the annual
mileage to 0.
Pressing the arrow button will display the ratio of
personal trip computer mileage to annual mileage
as a percent.
Pressing the arrow button again will display the ratio
of business trip computer mileage to annual mileage
as a percent.
Menu
Press the MENU button to choose a feature you would
like to personalize (the features are listed below). Each
press of the button will display a new item that can be
personalized. Use the arrow button to choose the
setting you would like to use within the chosen feature.
For example: Say you would like to personalize the
automatic door locks so that the automatic locking
feature is disabled. You would do the following:
1. First press the MENU button until you reach the
Automatic Door Lock screen.2. Next, press the arrow button until you find the
Disabled setting.
3. The setting is now actually set without having to
do anything else. You can do one of three things
at this point:
You can leave the personalization mode by
pressing FUEL or TRIP.
You can just let the SIC exit the personalization
mode on its own by waiting approximately
15 seconds without touching any buttons,
or you can press the MENU key to move on to
the next programmable feature.
The following is a list of the personal settings that can
be changed:
Automatic Door Lock
Enabled: Doors automatically lock when
transmission is shifted out of PARK (P).
Disabled: Doors do not lock automatically.
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Automatic Door Unlock
Driver: Driver's door unlocks when transmission is
shifted into PARK (P).
All: All doors unlock when transmission is shifted
into PARK (P).
Disabled: Doors do not unlock automatically.
Remote Lock Feedback
Horn: Horn chirps on second press of the LOCK
button on the keyless entry transmitter.
Lamps: Parking lamps flash on each press of the
LOCK button on the keyless entry transmitter.
Horn and Lamps: Parking lamps flash on each
press, horn chirps on second press of LOCK on the
keyless entry transmitter.
None: No horn or lamp feedback to the LOCK
button on the keyless entry transmitter.
Remote Unlock Feedback
Horn: Horn chirps on second press of the UNLOCK
button on the keyless entry transmitter.
Lamps: Parking lamps flash on each press of the
UNLOCK button on the keyless entry transmitter.Horn and Lamps: Parking lamps flash on each
press, horn chirps on the second press of the
UNLOCK button on the keyless entry transmitter.
None: No horn or lamp feedback will occur when
the UNLOCK button on the keyless entry transmitter
is pressed.
Headlamp Delay
None: Headlamps do not stay on after the ignition is
turned to OFF.
10/20/30/60/120/180 Seconds: Amount of time
headlamps stay on after the ignition is turned to
OFF when it is dark (switch must be in auto
headlamp position).
Perimeter Lamps
Enabled: Parking lamps, headlamps and puddle
lamps turn on for 40 seconds with the UNLOCK
button on the keyless entry transmitter. This feature
only operates when it is dark.
Disabled: Feature disabled, no perimeter lamps will
come on.
3-7 Air Conditioning
On hot days, open the windows long enough to let hot
air inside escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
The A/C button, below the mode knob, allows the air
coming into your vehicle to be cooled. This setting is
useful for normal cooling on hot days. When you use
A/C with the recirculation button pressed in, turn off
recirculation as soon as the vehicle reaches a
comfortable interior temperature.
Using A/C with the recirculation setting active allows
the air inside your vehicle to be recirculated. This
setting helps to maximize your air conditioner's
performance and your vehicle's fuel economy. This
setting also cools air the fastest and can be used to keep
unwanted odors and/or dust from entering the vehicle.
When using the air conditioner, turn off the recirculation
setting and use the outside air setting after the vehicle
reaches a comfortable interior temperature. When the
right knob on the control panel is between floor and
defrost, the recirculation feature will not function to
reduce window fogging.Passenger Compartment Air Filter
Your vehicle is equipped with a passenger compartment
air filter, which filters outside air entering the vehicle.
For information on replacing the filter see ªPassenger
Compartment Air Filterº in the Index.
Heating
The heater works best if you keep your windows closed
while using it. On cold days, use the floor setting with
the temperature knob in the red area.
On cold days, approximately 32F (
-0C) or lower,
you may experience differences in how the transmission
shifts until the engine is warm. This feature
automatically reduces the time it takes for the engine to
reach normal operating temperature and shortens the
time it takes the heater to reach full output.
If you use the engine coolant heater before starting your
engine in cold weather, 20F (
-8C) or lower, the
heating system will produce warmer air faster to heat the
passenger compartment.
The use of an engine coolant heater also reduces the
time it takes for the engine to reach normal operating
temperature. For more information, see ªEngine Coolant
Heaterº in the Index.
4-9
Remember: Anti-lock doesn't change the time you need
to get your foot up to the brake pedal or always decrease
stopping distance. If you get too close to the vehicle in
front of you, you won't have time to apply your brakes
if that vehicle suddenly slows or stops. Always leave
enough room up ahead to stop, even though you have
anti
-lock brakes.
Using Anti
-Lock
Don't pump the brakes. Just hold the brake pedal down
firmly and let anti
-lock work for you. You may feel the
brakes vibrate, or you may notice some noise, but this
is normal.
Braking in Emergencies
With anti-lock, you can steer and brake at the same
time. In many emergencies, steering can help you more
than even the very best braking.
Traction Control System (TCS)
(2
-Wheel Drive)
Your vehicle may have a Traction Control System (TCS)
that limits wheel spin. This is especially useful in
slippery road conditions. The system operates only if it
senses that one or both of the rear wheels are spinning or
beginning to lose traction. When this happens, the
system reduces engine power to limit wheel spin.
This light will come on
when the TCS is limiting
wheel spin. See ªLow
Traction Lightº in the
Index. You may hear or
feel the system working or
notice a lack of accelerator
response, but this is normal.
The Traction Control System may operate on dry roads
under some conditions. When this happens, you may
notice a reduction in acceleration. This is normal and
doesn't mean there's a problem with your vehicle.
Examples of these conditions include a hard acceleration
in a turn, an abrupt upshift or downshift of the
transmission or driving on rough roads.