back on again while you are driving, your vehicle
needs service. Have the StabiliTrak®system
inspected by your dealer/retailer as soon as possible.
SeeStabiliTrak
®System on page 4-6for more
information.
SERVICE SUSPENSION SYS (System)
This message displays when the magnetic ride
control or automatic leveling control system is not
operating properly. Have your vehicle serviced by your
dealer/retailer.
SERVICE THEFT DETERRENT SYSTEM
This message displays when there is a problem with
the theft-deterrent system programmed in the key.
A fault has been detected in the system which means
that the system is disabled and it is not protecting
the vehicle. The vehicle usually restarts; however, you
may want to take the vehicle to your dealer/retailer
before turning off the engine. SeePASS-Key
®III+
Electronic Immobilizer Operation on page 2-21for
more information.
SERVICE TIRE MONITOR SYSTEM
This message displays if a part on the Tire Pressure
Monitor System (TPMS) is not working properly. The tire
pressure light also ashes and then remains on during
the same ignition cycle. SeeTire Pressure Light on
page 3-39. Several conditions may cause this message
to appear. SeeTire Pressure Monitor Operation on
page 5-60for more information. If the warning comes on
and stays on, there may be a problem with the TPMS.
See your dealer/retailer.
SERVICE TRACTION CONTROL
This message displays when there is a problem with the
Traction Control System (TCS). When this message
displays, the system will not limit wheel spin. Adjust your
driving accordingly. See your dealer/retailer for service.
SeeTraction Control System (TCS) on page 4-6for
more information.
SERVICE TRANSMISSION
This message displays when there is a problem with the
vehicle’s transmission. Have your vehicle serviced by
your dealer/retailer.
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SERVICE VEHICLE SOON
This message displays when a non-emissions related
malfunction occurs. Have your vehicle serviced by your
dealer/retailer as soon as possible.
SPEED LIMITED TO XXX MPH (km/h)
This message displays when your vehicle speed
is limited to 80 mph (128 km/h) because the vehicle
detects a problem in the speed variable assist steering,
magnetic ride control, or automatic leveling control
systems. Have your vehicle serviced by your
dealer/retailer.
STABILITRAK NOT READY
This message may display and the Traction Control
System and StabiliTrak®Warning Light on the
instrument panel cluster may be on after rst driving the
vehicle and exceeding 19 mph (30 km/h) for 30 seconds.
The StabiliTrak
®system is not functional until the
light has turned off. SeeStabiliTrak®System on
page 4-6for more information.
STABILITRAK OFF
This message displays when you turn off StabiliTrak®,
or when the stability control has been automatically
disabled. To limit wheel spin and realize the full bene ts
of the stability enhancement system, you shouldnormally leave StabiliTrak
®on. However, you should
turn StabiliTrak®off if your vehicle gets stuck in
sand, mud, ice, or snow and you want to rock your
vehicle to attempt to free it, or if you are driving
in extreme off-road conditions and require more wheel
spin. SeeIf Your Vehicle is Stuck in Sand, Mud,
Ice, or Snow on page 4-29. To turn the StabiliTrak
®
system on or off, seeStabiliTrak®System on page 4-6.
There are several conditions that can cause this
message to appear.
One condition is overheating, which could occur if
StabiliTrak®activates continuously for an extended
period of time.
The message also displays if the brake system
warning light is on. SeeBrake System Warning
Light on page 3-36.
The message could display if the stability system
takes longer than usual to complete its diagnostic
checks due to driving conditions.
The message displays if an engine or vehicle
related problem has been detected and the vehicle
needs service. See your dealer/retailer.
The message turns off as soon as the conditions that
caused the message to be displayed are no longer
present.
3-58
For persons under 21, it is against the law in every
U.S. state to drink alcohol. There are good medical,
psychological, and developmental reasons for
these laws.
The obvious way to eliminate the leading highway
safety problem is for people never to drink alcohol and
then drive.
Medical research shows that alcohol in a person’s
system can make crash injuries worse, especially
injuries to the brain, spinal cord, or heart. This means
that when anyone who has been drinking — driver
or passenger — is in a crash, that person’s chance of
being killed or permanently disabled is higher than if the
person had not been drinking.
Control of a Vehicle
The following three systems help to control your vehicle
while driving — brakes, steering, and accelerator.
At times, as when driving on snow or ice, it is easy
to ask more of those control systems than the tires and
road can provide. Meaning, you can lose control of
your vehicle. SeeStabiliTrak
®System on page 4-6.
Adding non-dealer/non-retailer accessories can affect
your vehicle’s performance. SeeAccessories and
Modifications on page 5-3.
Braking
SeeBrake System Warning Light on page 3-36.
Braking action involves perception time and reaction
time. First, you have to decide to push on the brake
pedal. That is perception time. Then you have to bring
up your foot and do it. That is reaction time.
Average reaction time is about three-fourths of a
second. But that is only an average. It might be less
with one driver and as long as two or three seconds or
more with another. Age, physical condition, alertness,
coordination, and eyesight all play a part. So do alcohol,
drugs, and frustration. But even in three-fourths of a
second, a vehicle moving at 60 mph (100 km/h) travels
66 feet (20 m). That could be a lot of distance in an
emergency, so keeping enough space between
your vehicle and others is important.
And, of course, actual stopping distances vary greatly
with the surface of the road, whether it is pavement or
gravel; the condition of the road, whether it is wet, dry, or
icy; tire tread; the condition of the brakes; the weight of
the vehicle; and the amount of brake force applied.
4-3
Avoid needless heavy braking. Some people drive
in spurts — heavy acceleration followed by heavy
braking — rather than keeping pace with traffic. This is
a mistake. The brakes might not have time to cool
between hard stops. The brakes will wear out much
faster if you do a lot of heavy braking. If you keep pace
with the traffic and allow realistic following distances,
you will eliminate a lot of unnecessary braking.
That means better braking and longer brake life.
If your vehicle’s engine ever stops while you are driving,
brake normally but do not pump the brakes. If you do, the
pedal could get harder to push down. If the engine stops,
you will still have some power brake assist. But you will
use it when you brake. Once the power assist is used up,
it can take longer to stop and the brake pedal will be
harder to push.
Adding non-dealer/non-retailer accessories can affect
your vehicle’s performance. SeeAccessories and
Modifications on page 5-3.Antilock Brake System (ABS)
Your vehicle has the Antilock Brake System (ABS),
an advanced electronic braking system that will
help prevent a braking skid.
When you start the engine and begin to drive away,
ABS will check itself. You might hear a momentary
motor or clicking noise while this test is going on.
This is normal.
If there is a problem with
the ABS, this warning light
will stay on. SeeAntilock
Brake System (ABS)
Warning Light on
page 3-37.
Let us say the road is wet and you are driving safely.
Suddenly, an animal jumps out in front of you. You slam
on the brakes and continue braking. Here is what
happens with ABS:
A computer senses that the wheels are slowing down.
If one of the wheels is about to stop rolling, the computer
will separately work the brakes at each front wheel
and at both rear wheels.
4-4
StabiliTrak®System
The vehicle is equipped with a vehicle stability
enhancement system called StabiliTrak. It is an advanced
computer controlled system that assists with directional
control of the vehicle in difficult driving conditions.
StabiliTrak activates when the computer senses a
discrepancy between the intended path and the direction
the vehicle is actually traveling. StabiliTrak selectively
applies braking pressure at any one of the vehicle’s
brakes to help steer the vehicle in the intended direction.
When the stability control system activates, the Traction
Control System (TCS)/StabiliTrak light will ash on the
instrument panel. This also occurs when traction control
is activated. A noise may be heard or vibration may be
felt in the brake pedal. This is normal. Continue to steer
the vehicle in the intended direction.
If there is a problem detected with StabiliTrak, a
SERVICE STABILITRAK message will be displayed on
the Driver Information Center (DIC). SeeDIC Warnings
and Messages on page 3-51. When this message is
displayed, the system is not operational. Driving should
be adjusted accordingly.
StabiliTrak comes on automatically whenever the vehicle
is started. To assist with directional control of the vehicle,
the system should always be left on. StabiliTrak canbe turned off if needed by pressing and holding the
TCS/StabiliTrak button until the TCS/StabiliTrak light
comes on the instrument panel and STABILITRAK OFF
appears in the DIC. For information on turning TCS off
and on, see Traction Control System (TCS) following.
If cruise control is being used when StabiliTrak activates,
the cruise control will automatically disengage. Cruise
control may be reengaged when road conditions allow.
SeeCruise Control on page 3-12for more information.
Traction Control System (TCS)
The vehicle has a traction control system that limits wheel
spin. This is especially useful in slippery road conditions.
On a rear-wheel-drive vehicle, the system operates if it
senses that one or both of the rear wheels are spinning or
beginning to lose traction. On an All-Wheel-Drive (AWD)
vehicle, the system will operate if it senses that any of the
wheels are spinning or beginning to lose traction. When
this happens, the system brakes the spinning wheel(s)
and/or reduces engine power to limit wheel spin.
The system may be heard or felt while it is working, but
this is normal.
The TCS warning light will also ash to indicate that the
traction control system is active.
4-6
This warning light comes
on if there is a problem
with the traction control
system.
SeeTraction Control System (TCS) Warning Light on
page 3-37. When this warning light is on, the system will
not limit wheel spin. Adjust your driving accordingly.
TCS automatically comes on whenever the vehicle
is started. To limit wheel spin, especially in slippery
road conditions, the system should always be left on.
But, TCS can be turned off if needed.
Notice:Do not repeatedly brake or accelerate
heavily when TCS is off. The vehicle’s driveline
could be damaged.
When TCS is switched off on AWD vehicles, the system
may still make noise. This is normal and necessary
with the AWD hardware on the vehicle.It may be necessary to turn the system off if the vehicle
ever gets stuck in sand, mud or snow and rocking the
vehicle is required. SeeRocking Your Vehicle to Get It
Out on page 4-30andIf Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow on page 4-29for more information.
See alsoWinter Driving on page 4-27for information on
using TCS when driving in snowy or icy conditions.
To turn the system off,
press the TCS/StabiliTrak
®
button located on the
console under the climate
controls.
Press and release the TCS/StabiliTrak button and the
traction control system will turn off and the traction
control system warning light will come on. Press
the button again to turn the system back on.
For information on turning StabiliTrak off and on,
see StabiliTrak System previously.
Adding non-GM accessories can affect the vehicle’s
performance. SeeAccessories and Modifications
on page 5-3for more information.
4-7
Driving in Rain and on Wet Roads
Rain and wet roads can reduce vehicle traction and affect
your ability to stop and accelerate. Always drive slower
in these types of driving conditions and avoid driving
through large puddles and deep-standing or owing
water.
{CAUTION:
Wet brakes can cause crashes. They might not
work as well in a quick stop and could cause pulling
to one side. You could lose control of the vehicle.
After driving through a large puddle of water or a
car/vehicle wash, lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates strong forces.
Driving through owing water could cause your
vehicle to be carried away. If this happens, you and
other vehicle occupants could drown. Do not ignore
police warnings and be very cautious about trying to
drive through owing water.
Hydroplaning
Hydroplaning is dangerous. Water can build up under
your vehicle’s tires so they actually ride on the water.
This can happen if the road is wet enough and you are
going fast enough. When your vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about hydroplaning.
The best advice is to slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather driving tips
include:
Allow extra following distance.
Pass with caution.
Keep windshield wiping equipment in good shape.
Keep the windshield washer uid reservoir lled.
Have good tires with proper tread depth. SeeTires
on page 5-48.
Turn off cruise control.
4-25