
Automatic Transfer Case
If the vehicle has four-wheel drive, the transfer case knob
is located to the right of the steering wheel on the
instrument panel.
Use this knob to shift into
and out of four-wheel
drive.
2
m(Two-Wheel High):This setting is for driving in
most street and highway situations. The front axle is not
engaged in two-wheel drive. This provides the best fuel
economy.AUTO (Automatic Four-Wheel Drive):This setting is
ideal for use when road conditions are variable. When
driving the vehicle in automatic four-wheel drive, the front
axle is engaged, but the vehicle’s power is sent to the
rear wheels. When the vehicle senses a loss of traction,
the system will automatically engage four-wheel drive.
Driving in this mode results in slightly lower fuel economy
than Two-Wheel High.
4
m(Four-Wheel High):This setting should be used
when you need extra traction, such as on snowy or icy
roads or in most off-road situations. This setting also
engages the front axle to help drive the vehicle.
2-29

OnStar Virtual Advisor
OnStar Virtual Advisor is a feature of OnStar Hands-Free
Calling that uses minutes to access location-based
weather, local traffic reports, and stock quotes. Press the
phone button and give a few simple voice commands to
browse through the various topics. See the OnStar
Owner’s Guide for more information. This feature is only
available in the continental U.S.
OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be
used to interact with OnStar Hands-Free Calling.
SeeAudio Steering Wheel Controls on page 3-110for
more information.
On some vehicles, the mute button can be used to dial
numbers into voice mail systems, or to dial phone
extensions. See the OnStar Owner’s Guide for more
information.
How OnStar Service Works
The OnStar system can record and transmit vehicle
information. This information is automatically sent to an
OnStar Call Center when the OnStar button is
pressed, the emergency button is pressed, or if the
airbags or AACN system deploy. This information
usually includes the vehicle’s GPS location and, in the
event of a crash, additional information regarding
the crash that the vehicle was involved in (e.g. the
direction from which the vehicle was hit). When
the Virtual Advisor feature of OnStar Hands-Free Calling
is used, the vehicle also sends OnStar the vehicle’s
GPS location so they can provide services where it is
located.
OnStar service cannot work unless the vehicle is in a
place where OnStar has an agreement with a wireless
service provider for service in that area. OnStar
service also cannot work unless the vehicle is in a place
where the wireless service provider OnStar has hired
for that area has coverage, network capacity and
reception when the service is needed, and technology
that is compatible with the OnStar service. Not all
services are available everywhere, particularly in remote
or enclosed areas, or at all times.
2-45

Brake System Warning Light..........................3-35
Antilock Brake System (ABS) Warning Light.....3-36
StabiliTrak
®Service Light...............................3-36
StabiliTrak®Indicator Light.............................3-37
Engine Coolant Temperature Gage..................3-37
Tire Pressure Light.......................................3-38
Malfunction Indicator Lamp.............................3-38
Oil Pressure Gage........................................3-42
Change Engine Oil Light................................3-43
Security Light...............................................3-43
Cruise Control Light......................................3-43
Reduced Engine Power Light.........................3-44
Highbeam On Light.......................................3-44
Service Four-Wheel Drive Warning Light..........3-44
Check Gages Warning Light...........................3-45
Gate Ajar Light.............................................3-45
Fuel Gage...................................................3-46
Low Fuel Warning Light.................................3-47
Check Gas Cap Light....................................3-47Driver Information Center (DIC).......................3-47
DIC Operation and Displays...........................3-48
DIC Warnings and Messages.........................3-51
DIC Vehicle Customization.............................3-56
Audio System(s).............................................3-62
Setting the Clock..........................................3-63
Radio(s)......................................................3-64
Using an MP3..............................................3-80
XM Radio Messages.....................................3-84
Navigation/Radio System...............................3-86
Bluetooth
®...................................................3-86
Rear Seat Entertainment (RSE) System...........3-96
Rear Seat Audio (RSA)................................3-109
Theft-Deterrent Feature................................3-110
Audio Steering Wheel Controls......................3-110
Radio Reception.........................................3-111
Fixed Mast Antenna....................................3-112
XM™ Satellite Radio Antenna System............3-112
Chime Level Adjustment...............................3-112
Section 3 Instrument Panel
3-2

The main components of the instrument panel are the following:
A.Headlamps on page 3-13.Dome Lamp Override
on page 3-16.Instrument Panel Brightness on
page 3-16.Fog Lamps on page 3-15(If Equipped).
B.Outlet Adjustment on page 3-26.
C.Turn Signal/Multifunction Lever on page 3-7.
D. OnStar
®and Audio Steering Wheel Controls.
SeeAudio Steering Wheel Controls on page 3-110.
E.Instrument Panel Cluster on page 3-28.
F.Audio Steering Wheel Controls on page 3-110.
G.Ignition Positions on page 2-21.
H.Audio System(s) on page 3-62.
I.Dual Climate Control System on page 3-19.
J.Hood Release on page 5-11.
K. Driver Information Center (DIC) Steering Wheel
Controls. SeeDriver Information Center (DIC)
on page 3-47.L. Transfer Case Controls. See “Automatic Transfer
Case” underFour-Wheel Drive on page 2-28.
M. Shift Lever and StabiliTrak
®(If Equipped) Button.
SeeShifting Into Park on page 2-34andStabiliTrak®
System on page 4-6.
N. Lighter. SeeAshtray(s) and Cigarette Lighter on
page 3-19.
O.Accessory Power Outlet(s) on page 3-18.
P.Parking Brake on page 2-33.
Q. Rear Window Washer/Wiper. SeeWindshield
Washer on page 3-9.
R. Rear Window Defogger. SeeDual Climate Control
System on page 3-19andDual Automatic Climate
Control System on page 3-22.
S.Glove Box on page 2-51.
3-5