
4n(Four-Wheel Drive Low):This setting also
engages your front axle and delivers extra
torque. You may never need this setting. It sends
maximum power to all four wheels. You might
choose Four-Wheel Drive Low if you are driving
off-road in deep sand, deep mud, deep snow, and
while climbing or descending steep hills.
StabiliTrak
®will not engage in this mode. See
StabiliTrak®System on page 363for more
information.
{CAUTION:
Shifting the transfer case to NEUTRAL
can cause your vehicle to roll even if the
transmission is in PARK (P). You or
someone else could be seriously injured.
Be sure to set the parking brake before
placing the transfer case in NEUTRAL.
SeeParking Brake on page 156.NEUTRAL (N):Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 418or
Towing Your Vehicle on page 417for more
information.
If the SERVICE 4 WHEEL DRIVE message stays
on, you should take your vehicle to your dealer
for service. See “SERVICE 4 WHEEL DRIVE
message” underDIC Warnings and Messages on
page 270.
Shifting Into Four-Wheel Drive High or
AUTO (Automatic Four-Wheel Drive)
Turn the knob to the Four-Wheel High or AUTO
position. This can be done at any speed,
except when shifting from Four-Wheel Drive Low.
The indicator light will ash while shifting. It will
remain on when the shift is completed.
152

Shifting Out of Four-Wheel Drive Low
To shift from Four-Wheel Drive Low to Four-Wheel
Drive High, AUTO, or Two-Wheel Drive High, your
vehicle must be stopped or moving less than 3 mph
(5 km/h) with the transmission in NEUTRAL (N) and
the ignition in RUN. The preferred method for
shifting out of Four-Wheel Drive Low is to have your
vehicle moving 1 to 2 mph (1.6 to 3.2 km/h). Turn
the knob to the Four-Wheel Drive High, AUTO, or
Two-Wheel Drive High position. You must wait for
the Four-Wheel Drive High, AUTO, or Two-Wheel
Drive High indicator light to stop ashing and
remain on before shifting your transmission
into gear.
Notice:Shifting the transmission into gear
before the Four-Wheel Drive Low indicator light
has stopped ashing could damage the
transfer case. To help avoid damaging your
vehicle, always wait for the Four-Wheel
Drive Low indicator light to stop ashing
before shifting the transmission into gear.
The vehicle may have signi cant engagement
noise and bump when shifting between
Four-Wheel Drive Low and Four-Wheel Drive High
ranges or from NEUTRAL while the engine is
running.If the knob is turned to the Four-Wheel Drive High,
AUTO, or Two-Wheel Drive High switch position
when your vehicle is in gear and/or moving,
the Four-Wheel Drive High, AUTO or Two-Wheel
Drive High indicator light will ash for 30 seconds
but will not complete the shift unless your
vehicle is moving less than 3 mph (5 km/h) and
the transmission is in NEUTRAL (N).
Shifting into NEUTRAL
To shift the transfer case to NEUTRAL do the
following:
1. Make sure the vehicle is parked so that it will
not roll.
2. Set the parking brake and apply the regular
brake pedal. SeeParking Brake on page 156
for more information.
3. Start the vehicle or turn the ignition to RUN.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to Two-Wheel
Drive High.
154

6. Turn the transfer case dial clockwise to
NEUTRAL till it stops and hold it for
10 seconds. Then slowly release the dial to
the four low position. The NEUTRAL light will
come on when the transfer case shift to
NEUTRAL is complete.
7. If the engine is running, verify that the
transmission is in NEUTRAL (N) by shifting the
transmission to REVERSE (R) for one second,
then shift the transmission to DRIVE (D) for
one second.
8. Turn the ignition to ACCESSORY, which will
turn the engine off.
9. Place the transmission shift lever in PARK (P).
10. Release the parking brake prior to moving
the vehicle.
11. Turn the ignition to LOCK.
Shifting Out of NEUTRAL
To shift out of NEUTRAL do the following:
1. Set the parking brake and apply the regular
brake pedal.
2. Shift the transmission to NEUTRAL (N) and
turn the ignition to RUN with the engine off.3. Turn the transfer case dial to the desired
transfer case shift position (Two-Wheel
Drive High, Four-Wheel Drive High, AUTO).
After the transfer case has shifted out of
NEUTRAL the NEUTRAL light will go out.
4. Release the parking brake prior to moving the
vehicle.
Notice:Shifting the transmission into gear
before the Four-Wheel Drive Low indicator light
has stopped ashing could damage the
transfer case. To help avoid damaging your
vehicle, always wait for the Four-Wheel
Drive Low indicator light to stop ashing
before shifting the transmission into gear.
5. Start the engine and shift the transmission to
the desired position.
Excessively shifting the transfer case into or out of
the different modes may cause the transfer
case to enter the shift protection mode. This will
protect the transfer case from possible damage
and will only allow the transfer case to respond to
one shift per 10 seconds. The transfer case
may stay in this mode for up to three minutes.
155

Parking Brake
To set the parking brake, hold the regular brake
pedal down with your right foot. Push down
the parking brake pedal with your left foot.
A chime will activate and the warning light will
ash when the parking brake is applied and
the vehicle is moving at least 5 mph (8 km/h).To release the parking brake, hold the regular brake
pedal down. Pull the bottom edge of the lever,
located above the parking brake pedal, with the
parking brake symbol, to release the parking brake.
If the ignition is on when the parking brake is
released, the brake system warning light will
go off.
Notice:Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
If you are towing a trailer and are parking on any
hill, seeTowing a Trailer on page 422.
156

{CAUTION:
Four-wheel drive vehicles with the transfer
case in NEUTRAL will allow the vehicle to
roll, even if the shift lever is in PARK (P).
So, be sure the transfer case is in a drive
gear — not in NEUTRAL. Always set the
parking brake.
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P) on
page 157.
If you are pulling a trailer, seeTowing a Trailer on
page 422.
Mirrors
Automatic Dimming Rearview Mirror
with OnStar
®, Compass and
Temperature Display
Your vehicle may have this feature. When on, the
automatic dimming mirror dims to the proper level
to minimize glare from lights behind you after dark.
The mirror has a dual display in the upper right
corner of the mirror face that shows the compass
reading and the outside temperature.
Control buttons for the OnStar
®system are at the
bottom of the mirror. SeeOnStar®System on
page 173for more information about the services
OnStar
®provides.
P(On/Off):This is the on/off button.
162

Warning Lights, Gages, and Indicators..... 242
Instrument Panel Cluster........................... 243
Speedometer and Odometer...................... 244
Trip Odometer........................................... 244
Tachometer............................................... 244
Safety Belt Reminder Light........................ 244
Passenger Safety Belt Reminder Light....... 245
Airbag Readiness Light............................. 245
Passenger Airbag Status Indicator............. 246
Charging System Light.............................. 248
Voltmeter Gage......................................... 249
Brake System Warning Light..................... 249
Anti-Lock Brake System Warning Light...... 251
StabiliTrak
®Indicator Light......................... 252
Engine Coolant Temperature Gage............ 252
Tire Pressure Light.................................... 253
Malfunction Indicator Lamp........................ 253
Oil Pressure Gage..................................... 256Oil Pressure Light..................................... 257
Security Light............................................ 258
Fog Lamp Light......................................... 258
Cruise Control Light.................................. 258
Highbeam On Light................................... 259
Tow/Haul Mode Light................................ 259
Fuel Gage................................................. 259
Low Fuel Warning Light............................ 260
Driver Information Center (DIC).................. 260
DIC Operation and Displays
(With DIC Buttons)................................. 261
DIC Operation and Displays
(Without DIC Buttons)............................ 267
DIC Warnings and Messages.................... 270
DIC Vehicle Customization
(With DIC Buttons)................................. 280
Section 3 Instrument Panel
200

A. Air Outlets. SeeOutlet Adjustment on
page 238.
B. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 205.
C. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 243.
D. Hazard Warning Flasher Button. SeeHazard
Warning Flashers on page 204.
E. Shift Lever. SeeAutomatic Transmission
Operation on page 145.
F. Tow/Haul Selector Button (If Equipped). See
Tow/Haul Mode on page 149.
G. Driver Information Center Controls. SeeDriver
Information Center (DIC) on page 260.
H. Audio System. SeeAudio System(s) on
page 290.
I. Exterior Lamps Control. SeeExterior Lamps on
page 215.
J. Dome Lamp Override Button. SeeDome Lamp
Override on page 219.
K. Automatic Transfer Case Control. (If Equipped).
SeeFour-Wheel Drive on page 150.
L. Cruise Control Buttons. SeeCruise Control on
page 211.M. Tilt Wheel Lever. SeeTilt Wheel on page 204.
N. Horn. SeeHorn on page 204.
O. Audio Steering Wheel Controls. SeeAudio
Steering Wheel Controls on page 351.
P. Climate Controls. SeeClimate Control System
on page 227or Dual Automatic Climate
Controls (If Equipped). SeeDual Automatic
Climate Control System on page 231.
Q. Accessory Power Outlets. SeeAccessory
Power Outlet(s) on page 225. Cigarette Lighter
(If Equipped). SeeAshtray(s) and Cigarette
Lighter on page 227.
R. StabiliTrak
®Button (If Equipped). See
StabiliTrak®System on page 363. Pedal Adjust
Button (If Equipped). SeeAdjustable Throttle
and Brake Pedal on page 143. Rear Park Assist
Disable Button (If Equipped). SeeUltrasonic
Rear Parking Assist (URPA) on page 222.
Heated Windshield Washer Fluid Button
(If Equipped). SeeWindshield Washer on
page 209. Power Running Boards Disable
Button (If Equipped). SeePower Running
Boards on page 131.
S. Glove Box. SeeGlove Box on page 190.
203