
SERVICE CHARG (Charge) SYS
(System)
This message displays if there is a problem with the
battery charging system. Under certain conditions, the
battery warning light may also turn on in the instrument
panel cluster. SeeCharging System Light on page 4-24.
The battery will not be charging at an optimal rate and
the vehicle will lose the ability to enter the fuel economy
mode. The vehicle is safe to drive, however have the
electrical system checked by your dealer/retailer. Press
and release the reset stem to acknowledge the message
and clear it from the display.
SERVICE STAB (Stability) SYS
(System)
This message displays if there is a problem with the
StabiliTrak system. Have your vehicle serviced by your
dealer/retailer. SeeStabiliTrak
®System on page 5-6
for more information.
STAB (Stability) SYS (System) OFF
This message displays when the StabiliTrak system is
turned off. SeeStabiliTrak®System on page 5-6for
more information.
TRAC (Traction) OFF
This message displays when the Traction Control
System (TCS) is turned off by pressing the StabiliTrak
button. SeeStabiliTrak
®System on page 5-6for
more information.
TRACTION FAULT
This message will display if there is a problem with the
TCS. Have your vehicle serviced by your dealer/retailer.
SeeTraction Control System (TCS) on page 5-8for
more information. Press and release the reset stem to
acknowledge the message and clear it from the display.
TURN SIGNAL
This message displays when the turn signal is on for
about 0.75 miles (1.2 km) of travel. Press and release
the reset stem to acknowledge the message and clear it
from the display.
4-41

StabiliTrak and Traction Control (TCS) come on
automatically whenever the vehicle is started and the
systems are reset with each ignition cycle. However,
when the transfer case is placed in Four-Wheel-Low
mode, StabiliTrak is automatically disabled. See
Four-Wheel Drive on page 3-25for more information.
It is recommended to leave the system on for normal
driving conditions, but it may be necessary to turn
the TCS portion of the system off if the vehicle is stuck
in sand, mud, ice, or snow, and it is necessary to
“rock” the vehicle to attempt to free it. If traction control
is turned off, only the brake-traction control portion
of traction control will work. The engine speed
management will be disabled. In this mode, engine
power is not reduced automatically and the drive wheels
can spin more freely. This can cause the brake-traction
control to activate constantly. SeeIf Your Vehicle is
Stuck in Sand, Mud, Ice, or Snow on page 5-31.
The StabiliTrak/TCS light
will flash on the instrument
panel cluster when the
TCS system or StabiliTrak
is both on and activated.The StabiliTrak/TCS button
is located on the
instrument panel.
To turn off TCS, press and release the StabiliTrak/TCS
button. The StabiliTrak/TCS light comes on in the
instrument panel cluster, and TRAC OFF comes on
the DIC. To turn TCS back on, press and release the
StabiliTrak/TCS button.
To turn off TCS and StabiliTrak, press and hold the
StabiliTrak/TCS button until the TRAC OFF and
STAB SYS OFF messages come on the DIC and the
StabiliTrak/TCS light comes on the instrument panel.
To turn TCS and StabiliTrak back on, press and release
the StabiliTrak/TCS button.
When the TCS or StabiliTrak system is turned off, the
StabiliTrak/TCS light and the appropriate TRAC OFF or
STAB SYS OFF message will be displayed on the DIC.
The vehicle will still have brake-traction control when TCS
or StabiliTrak is off, but will not be able to use the engine
speed management system. The StabiliTrak/TCS light
flashes when either system is actively working. See
Traction Control Operation following for more information.
5-7

Traction Control System (TCS)
The Traction Control System (TCS) is part of StabiliTrak.
TCS limits wheel slip which is especially useful in
slippery road conditions. The system operates only if it
senses that any of the wheels are spinning or
beginning to lose traction. When this happens, TCS
applies the brakes to limit wheel spin and also reduces
engine power. The system may be heard or felt while
it is working. This is normal and does not mean there is
a problem with the vehicle.
Notice:If the wheel(s) of one axle is allowed to
spin excessively while the StabiliTrak, ABS
and brake warning lights and any relevant DIC
messages are displayed, the transfer case could be
damaged. The repairs would not be covered by
the vehicle warranty. Reduce engine power and do
not spin the wheel(s) excessively while these
lights and messages are displayed.
TCS can operate on dry roads under some conditions.
When this happens, the system may be heard
working or a reduction in acceleration may be noticed.This is normal and does not mean there is a problem
with the vehicle. Examples of these conditions include
hard acceleration in a turn, an abrupt upshift or
downshift of the transmission or driving on rough roads.
If cruise control is being used when TCS begins to
limit wheel spin, the cruise control automatically
disengages. The cruise control can be re-engaged
when road conditions allow. SeeCruise Control
on page 4-7.
The message TRACTION FAULT appears in the Driver
Information Center (DIC) when a TCS or Antilock Brake
System (ABS) problem has been detected and the
vehicle needs service. When this message is on, the
system will not limit wheel spin. Adjust your driving
accordingly. SeeDIC Warnings and Messages on
page 4-37.
The StabiliTrak/TCS light
will flash on the instrument
panel cluster when the
TCS system or StabiliTrak
is both on and activated.
5-8

The StabiliTrak/TCS button
is located on the
instrument panel.
To turn off TCS, press and release the StabiliTrak/TCS
button. The StabiliTrak/TCS light comes on in the
instrument panel cluster, and TRAC OFF comes on
the DIC. To turn TCS back on, press and release the
StabiliTrak/TCS button.
Adding non-dealer/non-retailer accessories can affect
the vehicle’s performance. SeeAccessories and
Modi cations on page 6-3.
Limited-Slip Rear Axle
Vehicles with a limited-slip rear axle can give more
traction on snow, mud, ice, sand or gravel. It works like
a standard axle most of the time, but when traction
is low, this feature allows the drive wheel with the most
traction to move the vehicle.
Steering
Power Steering
If power steering assist is lost because the engine stops
or the system is not functioning, the vehicle can be
steered but it will take more effort.
Steering Tips
It is important to take curves at a reasonable speed.
Traction in a curve depends on the condition of the tires
and the road surface, the angle at which the curve is
banked, and vehicle speed. While in a curve, speed is
the one factor that can be controlled.
If there is a need to reduce speed, do it before entering
the curve, while the front wheels are straight.
Try to adjust the speed so you can drive through the
curve. Maintain a reasonable, steady speed. Wait
to accelerate until out of the curve, and then accelerate
gently into the straightaway.
5-9

{WARNING:
Fuel can spray out on you if you open the fuel cap
too quickly. If you spill fuel and then something
ignites it, you could be badly burned. This spray
can happen if the tank is nearly full, and is more
likely in hot weather. Open the fuel cap slowly and
wait for any hiss noise to stop. Then unscrew the
cap all the way.
Be careful not to spill fuel. Do not top off or overfill the
tank and wait a few seconds after you have finished
pumping before removing the nozzle. Clean fuel from
painted surfaces as soon as possible. SeeWashing
Your Vehicle on page 6-106.
When replacing the fuel cap, turn it clockwise until it
clicks. Make sure the cap is fully installed. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. This would allow fuel to evaporate
into the atmosphere. If the fuel cap is not properlyinstalled, the FUEL CAP message appears on the Driver
Information Center (DIC) and the check engine light will
be lit on the instrument panel cluster. SeeDIC Warnings
and Messages on page 4-37andMalfunction Indicator
Lamp on page 4-28for more information.
{WARNING:
If a fire starts while you are refueling, do not
remove the nozzle. Shut off the flow of fuel by
shutting off the pump or by notifying the station
attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to get
the right type. Your dealer/retailer can get one
for you. If you get the wrong type, it may not t
properly. This may cause the malfunction indicator
lamp to light and may damage the fuel tank and
emissions system. SeeMalfunction Indicator Lamp
on page 4-28.
6-9

How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to change
the engine oil and filter based on vehicle use. Whenever
the oil is changed, reset the system so it can calculate
when the next oil change is required. If a situation occurs
where the oil is changed prior to a CHANGE OIL
message being turned on, reset the system.
To reset the Engine Oil Life system:
1. With the engine off, turn the ignition to ON/RUN.
2. Press and release the stem in the lower center
of the instrument cluster until the OIL LIFE
message is displayed.
3. Once the alternating OIL LIFE and RESET
messages appear, press and hold the stem
until several beeps sound. This confirms that
the oil life system has been reset.
4. Turn the key to LOCK/OFF.
If the CHANGE OIL message comes back on when the
vehicle is started, the engine oil life system has not
reset. Repeat the procedure. SeeDIC Warnings
and Messages on page 4-37.
What to Do with Used Oil
Used engine oil contains certain elements that can be
unhealthy for your skin and could even cause cancer.
Do not let used oil stay on your skin for very long. Clean
your skin and nails with soap and water, or a good hand
cleaner. Wash or properly dispose of clothing or rags
containing used engine oil. See the manufacturer’s
warnings about the use and disposal of oil products.
Used oil can be a threat to the environment. If you
change your own oil, be sure to drain all the oil from the
filter before disposal. Never dispose of oil by putting it
in the trash, pouring it on the ground, into sewers, or into
streams or bodies of water. Recycle it by taking it to a
place that collects used oil.
6-19

When the malfunction indicator is illuminated, the system
may not be able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a variety of
reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the TPMS
malfunction telltale after replacing one or more tires or
wheels on your vehicle to ensure that the replacement
or alternate tires and wheels allow the TPMS to continue
to function properly.
SeeTire Pressure Monitor Operation on page 6-67for
additional information.
Federal Communications
Commission (FCC) and Industry
and Science Canada
SeeRadio Frequency Statement on page 8-18
for information regarding Part 15 of the Federal
Communications Commission (FCC) Rules and
RSS-210/211 of Industry and Science Canada.
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor
System (TPMS). The TPMS is designed to warn the
driver when a low tire pressure condition exists. TPMS
sensors are mounted onto each tire and wheel assembly
on your vehicle, excluding the spare tire. The TPMS
sensors monitor the air pressure in your vehicle’s tires
and transmit the tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low
tire pressure warning light
located on the instrument
panel cluster.
At the same time, a Driver Information Center (DIC)
message is displayed on the DIC display screen.
The low tire pressure warning light and the DIC warning
message come on at each ignition cycle until the tires are
inflated to the correct inflation pressure. For additional
information and details about the DIC operation and
displays seeDIC Operation and Displays on page 4-33
andDIC Warnings and Messages on page 4-37.
6-67

Hill and Mountain Roads..................................5-28
Hitches..........................................................5-55
Hood
Checking Things Under................................6-10
Release.....................................................6-11
Horn ............................................................... 4-3
How OnStar Service Works..............................1-21
How to Add Automatic Transmission Fluid..........6-24
How to Add Coolant to the Radiator..................6-32
How to Add Fluid............................................6-26
How to Check........................................6-25, 6-65
How to Check and Add Fluid............................6-27
How to Check Automatic Transmission Fluid.......6-22
How to Check Lubricant..........................6-47, 6-49
How to Check Power Steering Fluid..................6-37
How to Inspect the Engine Air Cleaner/Filter.......6-20
How to Reset the Engine Oil Life System...........6-19
How to Wear Safety Belts Properly...................2-18
How to Add Coolant to the Recovery Tank.............6-32
Hydraulic Clutch.............................................6-26
Hydroplaning..................................................5-26I
If a Crash Occurs...........................................8-13
If No Steam is Coming from the Engine
Compartment..............................................6-36
If Steam is Coming from the Engine
Compartment..............................................6-35
If the Off Indicator is Lit for an Adult-Size
Occupant...................................................2-78
If the On Indicator is Lit for a Child Restraint......2-77
Ignition Positions.............................................3-17
Ignition Transmission Lock Check....................... 7-9
Infants and Young Children, Restraints...............2-38
Inflation - Tire Pressure...................................6-64
Instrument Panel
Brightness..................................................4-13
Cluster.......................................................4-19
Insuring Your Vehicle.......................................8-12
Interior Mirror.................................................1-11
Introduction...................................................... 7-2
8