Ignition Positions
The ignition switch has
four different positions.
To shift out of P (Park), the ignition must be in ON/RUN
or ACC/ACCESSORY and the regular brake pedal
must be applied.A (LOCK/OFF):This position locks the ignition. It also
locks the transmission on automatic transmission
vehicles. The key can be removed in LOCK/OFF.
On vehicles with an automatic transmission, the shift
lever must be in P (Park) to turn the ignition switch
to LOCK/OFF.
The steering can bind with the wheels turned off center.
If this happens, move the steering wheel from right
to left while turning the key to ACC/ACCESSORY.
If this doesn’t work, then the vehicle needs service.
Notice:Using a tool to force the key to turn in
the ignition could cause damage to the switch or
break the key. Use the correct key, make sure it is
all the way in, and turn it only with your hand.
If the key cannot be turned by hand, see your
dealer/retailer.
B (ACC/ACCESSORY):This position lets things like
the radio and the windshield wipers operate while
the engine is off. Use this position if the vehicle must
be pushed or towed.
2-28
Driver Shift Control (DSC)
The vehicle has Driver Shift Control (DSC). DSC
controls the transmission and vehicle speed while driving
down hill or towing a trailer by allowing you to select
a desired range of gears.
To use this feature:
1. Move the shift lever to the M (Manual Mode).
This will force a downshift from the current gear,
for gears 3 through 6.
2. Press the (+) plus or (−) minus button on the left
side of the steering wheel, to select the desired
range of gears for current driving conditions.When in the M (Manual Mode) a number will display
next to the M, indicating the maximum available gear.
The DIC display will show the message MANUAL SHIFT
on the rst line and the maximum available gear will be
displayed on the second line. SeeDriver Information
Center (DIC) on page 3-46andDIC Operation and
Displays (Using DIC Buttons) on page 3-47orDIC
Operation and Displays (Using Trip Odometer Reset
Stem) on page 3-52for more information. The number
displayed in the DIC is the highest gear available.
The transmission will be limited to the gear selected and
lower gears. Shifting will occur normally while driving,
however the cluster will continue to display the maximum
available gear. Higher gears will not be available unless
the selection is changed to include higher gears using
the (+) plus button.
Grade Braking is not available when the Driver Shift
Control is active. SeeTow/Haul Mode on page 2-36and
Towing a Trailer on page 4-55for more information.
While using the DSC, cruise control and the tow/haul
mode can be used.
2-35
Tow/Haul Mode
The vehicle has a tow/haul mode. The tow/haul mode
adjusts the transmission shift pattern to reduce shift
cycling, providing increased performance, vehicle
control, and transmission cooling while towing or
hauling heavy loads.
Press the button located on the instrument panel to the
right of the steering wheel to turn tow/haul on or off. While
tow/haul is on, a light on the instrument panel cluster
comes on.
SeeTow/Haul Mode Light on page 3-44for more
information.
Also see “Tow Haul Mode” underTowing a Trailer on
page 4-55for more information.
Grade Braking
Grade Braking is only active while the Tow/Haul Mode is
selected and you are not in the Range Selection Mode.
See “Tow/Haul Mode listed previously andAutomatic
Transmission Operation on page 2-32for more
information on the Range Selection Mode. Grade Braking
assists in maintaining desired vehicle speeds when
driving on downhill grades by automatically implementing
a shift schedule that utilizes the engine and transmission
to slow the vehicle. This reduces wear on the braking
system and increases control of the vehicle. Grade
Braking monitors vehicle speed, acceleration, engine
torque and brake pedal usage. Using this information,
it detects when the truck is on a downhill grade and the
driver desires to slow the vehicle by pressing the brake.
Also seeTowing a Trailer on page 4-55for more
information.
2-36
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 3-129
for 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.
2-56
Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Horn .............................................................3-6
Tilt Wheel.....................................................3-6
Heated Steering Wheel...................................3-7
Turn Signal/Multifunction Lever.........................3-8
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-9
Flash-to-Pass.................................................3-9
Windshield Wipers........................................3-10
Windshield Washer.......................................3-10
Rear Window Wiper/Washer...........................3-11
Cruise Control..............................................3-12
Exterior Lamps.............................................3-15
Headlamps on Reminder................................3-16
Daytime Running Lamps (DRL).......................3-16
Automatic Headlamp System..........................3-17
Instrument Panel Brightness...........................3-17
Dome Lamps ...............................................3-18
Dome Lamp Override....................................3-18
Entry/Exit Lighting.........................................3-18
Reading Lamps............................................3-18
Electric Power Management...........................3-19
Battery Run-Down Protection..........................3-19
Accessory Power Outlet(s).............................3-20
Ashtray(s) and Cigarette Lighter......................3-21
Analog Clock...............................................3-21Climate Controls............................................3-22
Dual Automatic Climate Control System...........3-22
Outlet Adjustment.........................................3-27
Rear Air Conditioning and Heating System
and Electronic Climate Controls....................3-28
Warning Lights, Gages, and Indicators............3-29
Instrument Panel Cluster................................3-30
Speedometer and Odometer...........................3-31
Trip Odometer..............................................3-31
Tachometer.................................................3-31
Safety Belt Reminders...................................3-32
Airbag Readiness Light..................................3-32
Airbag Off Light............................................3-33
Charging System Light..................................3-35
Voltmeter Gage............................................3-36
Brake System Warning Light..........................3-37
Antilock Brake System (ABS) Warning Light.....3-38
StabiliTrak
®Indicator Light.............................3-38
Engine Coolant Temperature Gage..................3-39
Tire Pressure Light.......................................3-39
Malfunction Indicator Lamp.............................3-40
Oil Pressure Gage........................................3-42
Oil Pressure Light.........................................3-43
Security Light...............................................3-44
Cruise Control Light......................................3-44
Highbeam On Light.......................................3-44
Section 3 Instrument Panel
3-1
Tow/Haul Mode Light....................................3-44
Fuel Gage...................................................3-45
Low Fuel Warning Light.................................3-46
Driver Information Center (DIC).......................3-46
DIC Operation and Displays
(Using DIC Buttons)...................................3-47
DIC Operation and Displays
(Using Trip Odometer Reset Stem)..............3-52
DIC Compass..............................................3-54
DIC Warnings and Messages.........................3-56
DIC Vehicle Customization.............................3-64
Audio System(s).............................................3-72
Setting the Clock..........................................3-73
Radio(s)......................................................3-75Using an MP3 (Radio with Six-Disc Player)......3-94
Using an MP3 (Radio with CD and
DVD Player).............................................3-99
XM Radio Messages...................................3-105
Navigation/Radio System..............................3-107
Bluetooth
®.................................................3-107
Rear Seat Entertainment (RSE) System.........3-118
Rear Seat Audio (RSA)................................3-127
Theft-Deterrent Feature................................3-128
Audio Steering Wheel Controls......................3-129
Radio Reception.........................................3-129
Fixed Mast Antenna....................................3-130
XM™ Satellite Radio Antenna System............3-130
Section 3 Instrument Panel
3-2
The main components of the instrument panel are the following:
A.Outlet Adjustment on page 3-27.
B. Midgate Window Switch (SUT). SeePower Windows
on page 2-20.Rear Window Wiper/Washer on
page 3-11(SUV).
C.Turn Signal/Multifunction Lever on page 3-8.
D.Instrument Panel Cluster on page 3-30.
E.Audio Steering Wheel Controls on page 3-129.
F.Driver Information Center (DIC) on page 3-46.
G.Analog Clock on page 3-21.
H.Airbag Off Switch on page 1-76.
I. Global Window Switch. SeePower Windows on
page 2-20.
J.Exterior Lamps on page 3-15.
K.Dome Lamp Override on page 3-18.Instrument
Panel Brightness on page 3-17. Heated Windshield
Washer Control (If Equipped). SeeWindshield
Washer on page 3-10.L.Cruise Control on page 3-12.Heated Steering Wheel
on page 3-7(If Equipped).
M.Tilt Wheel on page 3-6.
N.Horn on page 3-6.
O.Full-Time Four-Wheel Drive on page 2-37.
P.Locking Rear Axle on page 4-10.Tow/Haul Mode
on page 2-36.Traction Control System (TCS) on
page 4-9. Ride Height Selector Button (If Equipped).
SeeSelectable Extended Rear Ride Height on
page 4-52.
Q. Shift Lever. SeeAutomatic Transmission Operation
on page 2-32.
R.Accessory Power Outlet(s) on page 3-20.
S.Dual Automatic Climate Control System on
page 3-22.
T.Audio System(s) on page 3-72.
U.Glove Box on page 2-64.
3-5