
SERVICE TIRE MONITOR SYSTEM
This message displays if a part on the Tire
Pressure Monitor (TPM) system is not working
properly. If you drive your vehicle while any of
the four sensors are missing or inoperable,
the warning comes on in about 20 minutes.
A sensor would be missing, for example, if you
put different wheels on your vehicle without
transferring the sensors. If the warning comes
on and stays on, there may be a problem with
the TPM. See your dealer.
SERVICE TRACTION CONTROL
This message displays when the Traction
Control System (TCS) is not functioning properly.
A warning light also appears on the instrument
panel cluster. SeeTraction Control System (TCS)
Warning Light on page 181andTraction Control
System (TCS) on page 291for more information.
Have the TCS serviced by your dealer as soon
as possible.
SERVICE VEHICLE SOON
This message displays when a non-emissions
related malfunction occurs. Have the vehicle
serviced by your dealer as soon as possible.
STABILITRAK NOT READY
This message may display and a warning light
on the instrument panel cluster may be on
after rst driving the vehicle and exceeding
30 mph (48 km/h) for 30 seconds. SeeTraction
Control System (TCS) Warning Light on page 181.
The StabiliTrak
®System is not functional until
the light has turned off. SeeStabiliTrak®System
on page 292for more information.
STABILITRAK OFF
This message displays any time the StabiliTrak®
System turns off. When this message has
been displayed, StabiliTrak®is no longer
available to assist you with directional control
of the vehicle. Adjust your driving accordingly.
SeeStabiliTrak
®System on page 292.
This message displays only while the ignition
is in RUN.
205

Any of the following conditions may cause the
StabiliTrak®System to turn off:
The StabiliTrak®System is turned off by
pressing and holding the traction control
button. SeeStabiliTrak
®System on page 292
for more information.
The battery is low.
There is a StabiliTrak®System failure.
See your dealer for service.
STARTING DISABLD (Disabled)
SERVICE THRTTLE (Throttle)
This message displays if the starting of the engine
is disabled due to the electronic throttle control
system. Have your vehicle serviced by your dealer
immediately.
This message only appears while the ignition is
in RUN, and will not disappear until the problem
is resolved.
This message cannot be acknowledged.
THEFT ATTEMPTED
This message displays if the content theft-deterrent
system has detected a break-in attempt while
you were away from your vehicle. SeeContent
Theft-Deterrent on page 111for more information.
TIRE LEARNING ACTIVE
This message displays when the Tire Pressure
Monitor (TPM) system is re-learning the tire
positions. SeeTire Pressure Monitor System on
page 391. The tire positions must be re-learned
after rotating the tires or after replacing a tire
or sensor. SeeTire Inspection and Rotation on
page 396andIn ation - Tire Pressure on page 390
for more information.
TRACTION CONTROL OFF
This message displays when the Traction Control
System (TCS) turns off. SeeTraction Control
System (TCS) on page 291for more information.
This message only displays while the ignition
is in RUN and disappears after 10 seconds, unless
it is acknowledged or an urgent warning appears.
206

Control of a Vehicle
You have three systems that make your vehicle go
where you want it to go. They are the brakes, the
steering, and the accelerator. All three systems
have to do their work at the places where the tires
meet the road.
Sometimes, as when you are driving on snow or
ice, it is easy to ask more of those control systems
than the tires and road can provide. That means
you can lose control of your vehicle. SeeTraction
Control System (TCS) on page 291.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modi cations on page 333.
Braking
SeeBrake System Warning Light on page 178.
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.
288

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 may
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 may 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 may take longer to stop and the
brake pedal will be harder to push.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modi cations on page 333.Anti-Lock Brake System (ABS)
Your vehicle has the Anti-Lock Brake
System (ABS), an advanced electronic braking
system that will help prevent a braking skid.
When you start your engine and begin to drive
away, ABS will check itself. You may hear a
momentary motor or clicking noise while this test
is going on, and you may even notice that
your brake pedal moves a little. This is normal.
If there is a problem
with ABS, this warning
light will stay on.
SeeAnti-Lock Brake
System Warning
Light on page 180.
289

You should turn the system off if your vehicle ever
gets stuck in sand, mud, ice or snow and rocking
the vehicle is required. SeeRocking Your Vehicle
to Get It Out on page 315.
The traction control
system can be turned
off by pressing the
traction control button,
located next to the
gear shift lever.
The traction control system can be activated again
by pressing the traction control button.
If the system is limiting wheel spin when you press
the button, the traction control off light will appear
on the instrument panel cluster. The system will not
turn off until there is no longer a current need to limit
wheel spin. You can turn the system back on at any
time by pressing the button again. If the light does
not come on, you may not have traction control and
your vehicle should be serviced by a dealer.
Adding non-GM accessories can affect your
vehicle’s performance. SeeAccessories and
Modi cations on page 333for more information.StabiliTrak®System
Your vehicle has this feature. The StabiliTrak®
system is an advanced computer controlled system
that helps the driver maintain directional control
of the vehicle in difficult driving conditions. This is
accomplished by selectively applying any one
of the vehicle’s brakes and reducing engine power.
The StabiliTrak
®system comes on automatically
whenever you start your vehicle.
The STABILITRAK NOT READY message may
be displayed in the DIC and the traction control
system and StabiliTrak
®warning light on the
instrument panel cluster will be on after rst driving
the vehicle and exceeding 30 mph 48 (km/h) for
30 seconds. The StabiliTrak
®system is off until
the light has turned off. This could take up to
15 minutes. SeeDIC Warnings and Messages
on page 198for more information.
292