
Automatic Transmission Operation
The vehicle has a Hydra-Matic®6L80 automatic
transmission, and has an electronic shift position
indicator within the instrument panel cluster.
This display comes on when the ignition key is
turned to the ON/RUN position.
There are several different positions for the shift lever.
P (Park):This position locks the rear wheels. It is the
best position to use when starting the engine because
the vehicle cannot move easily.
When parked on a hill, especially when the vehicle has
a heavy load, you may notice an increase in the effort
to shift out of P (Park). See Torque Lock (Automatic
Transmission) underShifting Into Park on page 2-43
for more information.{CAUTION:
It is dangerous to get out of the vehicle if the shift
lever is not fully in P (Park) with the parking brake
rmly set. The vehicle can roll.
Do not leave the vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure the
vehicle will not move, even when you are on fairly
level ground, always set the parking brake and
move the shift lever to P (Park). SeeShifting Into
Park on page 2-43. If you are pulling a trailer, see
Towing a Trailer on page 4-55.
R (Reverse):Use this gear to back up.
Notice:Shifting to R (Reverse) while the vehicle is
moving forward could damage the transmission.
The repairs would not be covered by the vehicle
warranty. Shift to R (Reverse) only after the vehicle
is stopped.
2-32

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

Transfer Case Dial
The transfer case dial is
located to the right of the
instrument panel cluster.
Use this switch to shift into
and out of the different
Full-Time Four-Wheel
Drive modes.
The transfer case is a part of the Full-Time Four-Wheel
Drive system and allows the following four different
modes of operation:
4
m(Full-Time Four-Wheel Drive):This setting is
used for driving in most street and highway situations.
It can be used for light or variable off-road conditions.
4
mQ(Four-Wheel-High Lock):Use this mode
when you need extra traction in most off-road situations
such as sand, mud, snow, or level, rocky trails.4
nQ(Four-Wheel-Low Lock):This mode delivers
extra torque to all four wheels and is used for extreme
off-road conditions. Choose Four-Wheel-Low Lock
while driving off-road in deep sand, mud, or snow and
climbing or descending steep hills.
When in this mode you can also choose to lock the rear
axle for additional traction in extreme off-road situations.
SeeLocking Rear Axle on page 4-10.
Notice:Operating the vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h)
for any extended period of time could cause damage
to the transfer case. Do not operate the vehicle in
Four-Wheel-Low Lock above 50 mph (80 km/h) for
extended periods.
{CAUTION:
Shifting the transfer case to N (Neutral) can cause
the vehicle to roll even if the transmission is in
P (Park). You or someone else could be seriously
injured. Be sure to set the parking brake before
placing the transfer case in N (Neutral).
SeeParking Brake on page 2-42.
2-38

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

Instrument Panel Overview
3-4

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

Turn Signal/Multifunction Lever
The lever on the left side of the steering column
includes the following:
G: Turn and Lane Change Signals
53: Headlamp High/Low-Beam Changer
N: Windshield Wipers
L: Windshield Washer
Flash-to-Pass Feature
Information for these features is on the pages following.
Turn and Lane-Change Signals
An arrow on the instrument
panel cluster ashes in the
direction of the turn or
lane change.
Move the lever all the way up or down to signal a turn.
Raise or lower the lever until the arrow starts to ash to
signal a lane change. The turn signals automatically ash
three times. It will ash six times if the tow-haul mode is
active. Holding the turn signal lever for more than one
second causes the turn signals to ash until the lever
is released.
The lever returns to its starting position when it is
released.
If after signaling a turn or a lane change the arrows
ash rapidly or do not come on, a signal bulb may be
burned out.
Have the bulbs replaced. If the bulb is not burned out,
check the fuse. SeeInstrument Panel Fuse Block on
page 5-111andUnderhood Fuse Block on page 5-113.
3-8