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Front Blower Control
There are four blower speeds. Use this
control to regulate the amount of air
forced through the system in any
mode you select. The blower speed
increases as you move the control
clockwise from the OFF position.
NOTE: For vehicles equipped with Remote Start, the
climate controls will not function during Remote Start
operation if the blower control is left in the OFF position.
Temperature Control
Use this control to regulate the tem-
perature of the air inside the passenger
compartment. Rotating the knob coun-
terclockwise, from top center into the
blue area of the scale, indicates cooler temperatures. Rotating the knob clockwise, into the red
area, indicates warmer temperatures.
NOTE:
If your air conditioning performance seems
lower than expected, check the front of the A/C con-
denser (located in front of the radiator), for an accumu-
lation of dirt or insects. Clean with a gentle water spray
from behind the radiator and through the condenser.
Fabric front fascia protectors may reduce airflow to the
condenser, reducing air conditioning performance.
Mode Control (Air Direction)
Mode control allows you to choose
from several patterns of air distribu-
tion. You can select either a primary
mode, as identified by the symbols, or
a blend of two of these modes. The
closer the control is to a particular
mode, the more air distribution you
receive from that mode.
250 UNDERSTANDING YOUR INSTRUMENT PANEL
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Recirculation Control
Press this button to choose between
outside air intake or recirculation of
the air inside the vehicle. A LED will
illuminate when you are in Recircula-
tion mode. Only use the Recirculation
mode to temporarily block out any
outside odors, smoke, or dust, and to
cool the interior rapidly upon initial start-up in very hot
or humid weather.
NOTE:
•If the RECIRCULATION button is pressed when the
system is in Mix or Defrost mode the Recirculation
LED indicator will flash three times and then turn off
to indicate Recirculation mode is not allowed.
•Continuous use of the Recirculation mode may make
the inside air stuffy and window fogging may occur.
Extended use of this mode is not recommended.
•In cold or damp weather, the use of the Recirculation
mode will cause windows to fog on the inside because
of moisture buildup inside the vehicle. For maximum
defogging, select the Outside Air position.
•The A/C can be deselected manually without disturb-
ing the mode control selection by pressing the A/C
button.
Air Outlets
The airflow from each of the instrument panel outlets can
be adjusted for direction, and turned on or off to control
airflow.
NOTE: For maximum airflow to the rear, the center
instrument panel outlets can be directed toward the rear
seat passengers.
252 UNDERSTANDING YOUR INSTRUMENT PANEL
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blower will engage immediately if the Defrost mode is
selected, or by adjusting the blower control knob and
setting the fan to any fixed speed.
Manual Operation
This system offers a full complement of manual override
features.
NOTE:Each of these features operate independently
from each other. If any one feature is controlled manually,
the temperature doors will continue to operate automati-
cally.
There are six fixed blower speeds. Use
this control to regulate the amount of
air forced through the system in any
mode you select. The blower speed
increases as you move the control
clockwise from the OFF position. The blower fan speed can be set to any fixed speed by
adjusting the blower control knob. The fan will now
operate at a fixed speed until additional speeds are
selected. This allows the front occupants to control the
volume of air circulated in the vehicle and cancel the
Auto mode.
The operator can also select the direction of the airflow
by selecting one of the following positions.
Panel Mode
Air comes from the outlets in the instrument panel.
Each of these outlets can be individually adjusted to
direct the flow of air. The air vanes of the center outlets
and outboard outlets can be rotated to regulate or shut off
the airflow from these outlets.
Bi-Level Mode Air comes from the instrument panel outlets, floor
outlets and defrost outlets.
Blower Control
256 UNDERSTANDING YOUR INSTRUMENT PANEL
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STARTING AND OPERATING
CONTENTS
Starting Procedures .................... 265
▫ Normal Starting ..................... 265
▫ Automatic Transmission ............... 265
▫ If Engine Fails To Start ................ 266
▫ After Starting ....................... 267
Engine Block Heater — If Equipped ........ 267
Automatic Transmission ................. 268
▫ Key Ignition Park Interlock ............. 269
▫ Brake/Transmission Shift Interlock System . . 269 ▫
Brake/Transmission Interlock Manual
Override .......................... 269
▫ Five–Speed Automatic Transmission (545RFE)
— 5.7L Engine Only .................. 270
Four-Wheel Drive Operation — If Equipped . . 277
▫ Manually Shifted Transfer Case – If
Equipped .......................... 277
▫ Shifting Procedure – Manually Shifted
Transfer Case ....................... 279
▫ Transfer Case Position Indicator Light ...... 280
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▫Electronically Shifted Transfer Case
(Four-Position Switch) – If Equipped ....... 280
▫ Shifting Procedure ................... 285
Limited-Slip Differential ................. 287
Driving On Slippery Surfaces ............. 288
Driving Through Water ................. 288
▫ Flowing/Rising Water ................. 289
▫ Shallow Standing Water ............... 289
Power Steering ....................... 291
▫ Power Steering Fluid Check ............. 292
Parking Brake ........................ 292
Brake System ........................ 295
▫ Dual Rear Wheel Models Only ........... 295▫
Four-Wheel Anti-Lock Brake System ....... 295
Tire Safety Information ................. 297
▫ Tire Markings ....................... 297
▫ Tire Identification Number (TIN) ......... 301
▫ Tire Terminology And Definitions ......... 302
▫ Tire Loading And Tire Pressure .......... 303
Tires — General Information ............. 307
▫ Tire Pressure ....................... 307
▫ Tire Inflation Pressures ................ 308
▫ Radial Ply Tires ..................... 313
▫ Tire Spinning ....................... 313
▫ Tread Wear Indicators ................. 314
▫ Life Of Tire ........................ 314
262 STARTING AND OPERATING
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STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belt.
The starter should not be operated for more than 15-
second intervals. Waiting a few seconds between such
intervals will protect the starter from overheating.
WARNING!
•Accidents can be caused by inadvertently moving
the shift lever or by pressing the accelerator pedal.
This may cause excessive heat in the exhaust
system, resulting in overheating and vehicle fire
which may cause serious or fatal injuries.
•Do not leave children or animals inside parked
vehicles in hot weather. Interior heat buildup may
cause serious injury or death.
Normal Starting
Normal starting of either a warm or cold engine is
obtained without pumping or pressing the accelerator
pedal. Turn the key fob to the START position and release
when the engine starts. If the engine fails to start within
10 seconds, turn the key fob to the OFF position, wait five
seconds, then repeat the “Normal Starting” procedure.
Automatic Transmission
Start the engine with the shift lever in the NEUTRAL or
PARK position. Apply the brake before shifting into any
driving range.
NOTE: This vehicle is equipped with a transmission
shift interlocking system. The brake pedal must be
pressed to shift out of PARK.5
STARTING AND OPERATING 265
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If the engine has been flooded, it may start to run, but not
have enough power to continue running when the key
fob is released. If this occurs, continue cranking with the
accelerator pedal pushed all the way to the floor. Release
the accelerator pedal and the key fob once the engine is
running smoothly.
If the engine shows no sign of starting after two 15-
second periods of cranking with the accelerator pedal
held to the floor, the “Normal Starting” procedure should
be repeated.
After Starting
The idle speed is automatically controlled and will de-
crease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.3500 Models — 5.7L Engine Only
The engine block heater cord is routed through the grille
by the right front tow hook.
It includes a removable cap that is secured by a tethered
strap. It also has a c-clip that is used for storage when not
in use for the winter months. During winter months,
remove the heater cord wiring assembly from itself on
the c-clip.
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 Volt electrical cord could cause
electrocution.
5
STARTING AND OPERATING 267
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WARNING! (Continued)
•Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, you should
always shift the transmission into PARK, remove
the key fob from the ignition, and apply the
parking brake. Once the key fob is removed from
the ignition, the shift lever is locked in the PARK
position, securing the vehicle against unwanted
movement. Furthermore, you should never leave
unattended children inside a vehicle.
Key Ignition Park Interlock
This vehicle is equipped with a Key Ignition Park Inter-
lock which requires the shift lever to be placed in PARK
prior to rotating the ignition switch to the LOCK posi-
tion. The key fob can only be removed from the ignitionswitch when the ignition switch is in the LOCK position
and once removed the shift lever is locked in PARK.
Brake/Transmission Shift Interlock System
This vehicle is equipped with a Brake Transmission Shift
Interlock System (BTSI) that holds the shift lever in the
PARK position when the ignition switch is in the LOCK
position. To move the shift lever out of the PARK
position, the ignition switch must be turned to any other
ignition switch position (ACC, ON, or START) (engine
running or not) and the brake pedal must be pressed.
Brake/Transmission Interlock Manual Override
There is an override for the BTSI that allows you to move
the shift lever out of the PARK position if an electrical
system malfunction occurs (i.e., dead battery).
1. Turn the ignition switch to the ACC or ON position
without starting the engine.
2. Tilt the steering wheel to the full up position
5
STARTING AND OPERATING 269