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RUN and remain on, as a bulb check, until the engine is
started. If the vehicle is not ready for emissions testing,
the light will come on when the ignition is first turned to
ON/RUN and remain on for 15 seconds, then blink for
5 seconds, and remain on until the vehicle is started. If
the bulb does not come on during starting, have the
condition investigated promptly.
If this light comes on and remains on while driving, it
suggests a potential engine control problem and the need
for system service.
Although your vehicle will usually be drivable and not
need towing, see an authorized dealer for service as soon
as possible.CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also could
affect fuel economy and drivability. If the MIL is
flashing, severe catalytic converter damage and
power loss will soon occur. Immediate service is
required.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such
as dry plants, wood, cardboard, etc. This could result
in death or serious injury to the driver, occupants or
others.
188 UNDERSTANDING YOUR INSTRUMENT PANEL
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alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle, to ensure that the
replacement or alternate tires and wheels allow the TPMS
to continue to function properly.
CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.23. Airbag Warning Light
This light will turn on for four to eight seconds
as a bulb check when the ignition switch is first
turned to ON/RUN. If the light is either not on
during starting, stays on, or turns on while
driving, have the system inspected at an authorized
dealer as soon as possible. Refer to “Occupant Restraints”
in “Things To Know Before Starting Your Vehicle” for
further information.
24. 4WD Indicator This light indicates the vehicle is in four-wheel
drive and 4LOCK. 4WD allows all four wheels
to receive torque from the engine simultane-
ously.
190 UNDERSTANDING YOUR INSTRUMENT PANEL
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Macrovision
This product incorporates copyright protection technol-
ogy that is protected by U.S. patents and other intellec-
tual property rights. Use of this copyright protection
technology must be authorized by Macrovision, and is
intended for home and other limited viewing uses only,
unless otherwise authorized by Macrovision. Reverse
engineering or disassembly is prohibited.
DTS™
DTS™andDTS™ 2.0 are trademarks of Digital The-
ater Systems, Inc.
Uconnect™ Multimedia (Satellite Radio) —
If Equipped
Satellite radio uses direct satellite-to-receiver broadcast-
ing technology to provide clear digital sound, coast to
coast. The subscription service provider is Sirius Satellite
Radio. This service offers over 130 channels of music,
sports, news, entertainment, and programming for chil-
dren, directly from its satellites and broadcasting studios. NOTE:
Sirius service is not available in Hawaii and has
limited coverage in Alaska.
System Activation
Sirius Satellite Radio service is pre-activated, and you
may begin listening immediately to the one year of audio
service that is included with the factory-installed satellite
radio system in your vehicle. Sirius will supply a wel-
come kit that contains general information, including
how to setup your on-line listening account. For further
information, call the toll-free number 888-539-7474, or
visit the Sirius web site at www.sirius.com, or at www-
.siriuscanada.ca for Canadian residents.
Electronic Serial Number/Sirius Identification
Number (ESN/SID)
Please have the following information available when
calling:
1. The Electronic Serial Number/Sirius Identification
Number (ESN/SID).
4
UNDERSTANDING YOUR INSTRUMENT PANEL 207
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right of the control panel. Conditioned air will be di-
rected through the outlets selected by the mode control.
A light at the top of the SNOWFLAKE button shows that
the air conditioning is on. Press the button a second time
to turn the air conditioning off.
Slight changes in engine speed or power may be noticed
when the air conditioning compressor is on. This is a
normal occurrence as the compressor will cycle on and
off to maintain comfort and increase fuel economy.The Mode Control (at the right of the
control panel) can be set in any of the
following positions: NOTE:
To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots.
Recirculation Modes (Panel or Bi-Level )
Select the recirculation modes when
the outside air contains dust, odors,
high humidity, or if rapid cooling is
desired. This feature allows for recir-
culation of interior air only. Air flows
either through the panel outlets or
both the panel and floor outlets to-
gether, depending on which recirculation mode is
selected.
Panel (Fresh Air Modes)
Outside air flows through the outlets located in the
instrument panel.Mode Control
4
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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 “O” (Off)
position.
Temperature Control
The rotary knob at the center of the
control panel controls the temperature
of the interior air. You can choose your
degree of comfort by rotating the
knob. The coldest temperature setting
is to the extreme left (blue region) and
the warmest setting is to the extreme
right (red region) of the rotation.
Circulation
The cab is designed with features to promote outside air
circulation. There are grilles in the cab back panel. These
are air exhausters that provide the means for regular
exchange of cab air. Side window demisters direct airflow specifically to the
window glass to help prevent interior fogging of the
glass. They are located in the extreme outside upper
edges of the instrument panel. The demisters also pro-
vide extra air ducts for circulation. They are in operation
whenever the Floor, Mix, Defrost, or Bi-Level modes are
in use.
NOTE:
When you turn off the engine you may hear a
hissing sound from under the hood for a short period of
time. This is a normal condition that occurs if the air
conditioning system has been on. It is not an indication of
a problem with the air conditioning system.
Operating Tips
Fast Cooldown
For a fast cooldown, open the windows and turn the
blower fan rotary knob to the extreme right position, turn
the mode control to the panel fresh position, press the
SNOWFLAKE button to turn on the air conditioning, and
4
UNDERSTANDING YOUR INSTRUMENT PANEL 241
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Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer, to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50%
concentration of engine coolant to distilled water is
recommended. Refer to “Cooling System” under “Main-
tenance Procedures” in “Maintaining Your Vehicle”.
When using the air conditioner in extremely heavy
traffic, in hot weather, especially when towing a trailer,
additional engine cooling may be required. If this situa-
tion is encountered, operate the transmission in a lowergear and set the air conditioner to recirculation mode.
Operating the air conditioner in recirculation mode pro-
vides the maximum performance from your air condi-
tioning. When stopped in heavy traffic, it may be neces-
sary to shift into NEUTRAL and press the accelerator
slightly for fast idle operation.
Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other obstruc-
tions. This will help prevent snow going into the ducts.4
UNDERSTANDING YOUR INSTRUMENT PANEL 243
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STARTING AND OPERATING
CONTENTS
Starting Procedures .................... 249
▫ Automatic Transmission ............... 249
▫ Normal Starting ..................... 249
▫ Extreme Cold Weather
(Below –20°F Or –29°C) ................ 250
▫ If Engine Fails To Start ................ 250
▫ After Starting ....................... 251
Engine Block Heater — If Equipped ........ 251
Automatic Transmission ................. 252
▫ Key Ignition Park Interlock ............. 253
▫ Brake/Transmission Interlock System ...... 253
▫ Automatic Transmission ............... 253
▫ Gear Ranges ........................ 253
Four-Wheel Drive Operation — If Equipped . . 258
▫ Transfer Case Operating Information/
Precautions ......................... 258
▫ Shifting Procedure ................... 262
5
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▫Spare Tire Matching Original Equipped Tire
And Wheel – If Equipped .............. 287
▫ Compact Spare Tire – If Equipped ........ 288
▫ Full Size Spare – If Equipped ............ 289
▫ Limited-Use Spare – If Equipped ......... 289
▫ Tire Spinning ....................... 290
▫ Tread Wear Indicators ................. 290
▫ Life Of Tire ........................ 291
▫ Replacement Tires .................... 292
Tire Chains .......................... 293
Snow Tires .......................... 295
Tire Rotation Recommendations ........... 295
Tire Pressure Monitor System (TPMS) ....... 296
▫ Base System ........................ 299 ▫
General Information .................. 301
Fuel Requirements ..................... 301
▫ Reformulated Gasoline ................ 302
▫ Gasoline/Oxygenate Blends ............. 302
▫ E-85 Usage In Non-Flex Fuel Vehicles ...... 303
▫ MMT In Gasoline .................... 303
▫ Materials Added To Fuel ............... 304
▫ Fuel System Cautions ................. 304
▫ Carbon Monoxide Warnings ............ 305
Flexible Fuel (4.7L Engine Only) —
If Equipped .......................... 306
▫ E-85 General Information ............... 306
▫ Ethanol Fuel (E-85) ................... 307
5
STARTING AND OPERATING 247