Page 501 of 669

CAUTION!(Continued)
•A poorly fitting fuel filler cap may cause the MIL to
turn on.
• To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.
NOTE: When the fuel nozzle “clicks” or shuts off the
fuel tank is full.
WARNING!
• Never have any smoking materials lit in or near the
vehicle when the gas cap is removed or the tank is
being filled.
• Never add fuel to the vehicle when the engine is
running. This is in violation of most state and
federal fire regulations and may cause the MIL to
turn on. NOTE:
Tighten the gas cap ¼ turn until you hear one
click. This is an indication that the cap is properly
tightened.
If the gas cap is not tightened properly, the Malfunction
Indicator Light will come on. Be sure the gas cap is
tightened every time the vehicle is refueled.
WARNING!
A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on the
ground while filling.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
5
STARTING AND OPERATING 499
Page 502 of 669

will display in the EVIC/DID telltale display area. Refer
to “Electronic Vehicle Information Center (EVIC)/Driver
Information Display (DID) in “Understanding Your In-
strument Panel” for further information. Tighten the fuel
filler cap properly and push the RIGHT button to turn off
the message. If the problem continues, the message will
appear the next time the vehicle is started.
VEHICLE LOADING
Certification Label
As required by National Highway Traffic Safety Admin-
istration regulations, your vehicle has a certification label
affixed to the driver’s side door or pillar.
This label contains the month and year of manufacture,
Gross Vehicle Weight Rating (GVWR), Gross Axle Weight
Rating (GAWR) front and rear, and Vehicle Identification
Number (VIN). A Month-Day-Hour (MDH) number isincluded on this label and indicates the Month, Day and
Hour of manufacture. The bar code that appears on the
bottom of the label is your VIN.
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front and
rear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
Payload
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the
driver, all passengers, options and cargo.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
500 STARTING AND OPERATING
Page 503 of 669

Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles or suspension
components sometimes specified by purchasers for in-
creased durability does not necessarily increase the vehi-
cle’s GVWR.
Tire Size
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commer-
cial scale to insure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should
then be determined separately to be sure that the load is
properly distributed over the front and rear axle. Weigh-
ing the vehicle may show that the GAWR of either the
5
STARTING AND OPERATING 501
Page 559 of 669
MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 6.4L ..........559
ONBOARD DIAGNOSTIC SYSTEM (OBD II) . . .560
▫ Loose Fuel Filler Cap Message ............560
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ......................... .561
REPLACEMENT PARTS ..................562
DEALER SERVICE ..................... .563
MAINTENANCE PROCEDURES ...........563
▫ Engine Oil ......................... .564
▫ Engine Oil Filter ..................... .566▫
Engine Air Cleaner Filter ................567
▫ Accessory Drive Belt Inspection ...........570
▫ Maintenance-Free Battery ...............572
▫ Air Conditioner Maintenance .............573
▫ Front Prop Shaft Lubrication — Four-Wheel Drive
Models ............................ .575
▫ Body Lubrication .....................576
▫ Windshield Wiper Blades ...............576
▫ Adding Washer Fluid ..................580
▫ Exhaust System ..................... .581
7
Page 562 of 669

ONBOARD DIAGNOSTIC SYSTEM (OBD II)
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light (MIL).” It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability.
The vehicle must be serviced before any emissions
tests can be performed.
• If the MIL is flashing, while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
will display in the EVIC/DID telltale display
area. Refer to “Electronic Vehicle Information Center
560 MAINTAINING YOUR VEHICLE
Page 563 of 669

(EVIC)” or “Driver Information Display (DID)” in “Un-
derstanding Your Instrument Panel” for further informa-
tion. Tighten the fuel filler cap properly and push the
SELECT button to turn off the message. If the problem
continues, the message will appear the next time the
vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL).
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.For states that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction Indicator Light (MIL)” is functioning and is not on when
the engine is running, and that the OBD II system is
ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may
notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not
ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test, which
you can use prior to going to the test station. To check if
your vehicle’s OBD II system is ready, you must do the
following:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over.7
MAINTAINING YOUR VEHICLE 561
Page 623 of 669
FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
Standard Rear Tank 52 Gallons197 Liters
Optional Midship Tank 22 Gallons83 Liters
Engine Oil With Filter
6.4L Engine (We recommend you use SAE 0W-40, Synthetic API
Certified) 7 Quarts
6.6 Liters
Cooling System
6.4L Engine (We recommend you use MOPAR Antifreeze/Coolant
10 Year/150,000 Mile Formula). 16.6 Quarts
15.7 Liters
7
MAINTAINING YOUR VEHICLE 621
Page 648 of 669

Adding Engine Coolant (Antifreeze)............585
Adding Fuel ............................ .498
Additives, Fuel .......................... .496
Adjust Down ........................... .140, 141
Forward ......................... .140, 141
Rearward ........................ .140, 141
Up ............................. .140, 141
Adjustable Pedals ........................ .175
AirBag.............................. .67, 68
Advance Front Air Bag ....................69
Air Bag Operation .......................70
Air Bag Warning Light ....................78
Enhanced Accident Response ................78
Event Data Recorder (EDR) .................81
FrontAirBag...........................67
If A Deployment Occurs ...................76
Knee Impact Bolsters .....................71
Maintaining Your Air Bag System ............80Side Air Bags
...........................71
Transporting Pets .......................112
Air Bag Deployment ........................67
Air Bag Light ..................... .78, 115, 237
Air Bag Maintenance .......................80
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .567
Air Conditioner Maintenance .................573
Air Conditioning ..................... .345, 350
Air Conditioning Controls ................345, 350
Air Conditioning, Operating Tips ...........364, 367
Air Conditioning Refrigerant ..........573, 574, 575
Air Conditioning System ..........345, 350, 363, 573
Air Pressure, Tires .....................468, 480
Alarm, Panic .............................28
Alarm (Security Alarm) ..................21, 240
Alarm System (Security Alarm) ................21
Alterations/Modifications, Vehicle ...............7
Antifreeze (Engine Coolant) ..................584
Capacities ........................... .621
646 INDEX