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SERVICING AND MAINTENANCE
CONTENTS
SCHEDULED SERVICING .................441
▫ Maintenance Plan ...................... .443
▫ Heavy Duty Use Of The Vehicle ............444
ENGINE COMPARTMENT .................445
▫ 3.6L Engine ......................... .445
▫ 5.7L Engine ......................... .446
▫ 3.0L Diesel Engine ..................... .447
▫ Checking Oil Level — Gasoline Engine .......448
▫ Adding Washer Fluid ...................448
▫ Maintenance-Free Battery .................448
DEALER SERVICE ...................... .449
▫ Engine Oil .......................... .450
▫ Engine Oil Filter ...................... .452
▫ Engine Air Cleaner Filter .................452 ▫
Air Conditioner Maintenance ..............454
▫ Accessory Drive Belt Inspection ............458
▫ Body Lubrication ..................... .459
▫ Windshield Wiper Blades .................460
▫ Exhaust System ....................... .465
▫ Cooling System ....................... .467
▫ Brake System ........................ .471
▫ Automatic Transmission ..................472
▫ Front/Rear Axle Fluid ...................474
▫ Transfer Case ........................ .475
RAISING THE VEHICLE ..................475
TIRES ............................... .475
▫ T
ire Safety Information ..................475
▫ Tires — General Information ..............483
8
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▫Tire Types ........................... .489
▫ Spare Tires — If Equipped ................490
▫ Wheel And Wheel Trim Care ..............492
▫ Tire Chains (Traction Devices) .............494
▫ Tire Rotation Recommendations ............495
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES ..........496
▫ Treadwear ........................... .496
▫ Traction Grades ....................... .496
▫ Temperature Grades .....................496
STORING THE VEHICLE ..................497
BODYWORK .......................... .498
▫ Protection From Atmospheric Agents ........498
▫ Body And Underbody Maintenance ..........498
▫ Preserving The Bodywork .................499
INTERIORS ........................... .500
▫ Seats And Fabric Parts ...................500
▫ Plastic And Coated Parts ..................501
▫ Leather Parts ......................... .501
▫ Glass Surfaces ........................ .502
440 SERVICING AND MAINTENANCE
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Required Maintenance
Refer to the Maintenance Schedules on the following pages
for required maintenance.
At Every Oil Change Interval As Indicated By Oil Change Indicator System:
•Change oil and filter.
• Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns
on.
• Inspect battery and clean and tighten terminals as required.
• Inspect brake pads, shoes, rotors, drums, hoses and park brake.
• Inspect engine cooling system protection and hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or off-road conditions.
442 SERVICING AND MAINTENANCE
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Transfer Case
Fluid Level Check
For normal service, periodic fluid level checks are not
required. When the vehicle is serviced for other reasons the
exterior surfaces of the transfer case assembly should be
inspected. If oil leakage is suspected inspect the fluid level.
Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information.
Adding Fluid
Add fluid at the filler hole, until it runs out of the hole,
when the vehicle is in a level position.
Drain
First remove fill plug, then remove drain plug. Recom-
mended tightening torque for drain and fill plugs is 15 to
25 ft lbs (20 to 34 N·m).
CAUTION!
When installing plugs, do not overtighten. You could
damage them and cause them to leak.
Selection Of Lubricant
Use only the manufacturer’s recommended fluid. Refer to
“Fluids And Lubricants” in “Technical Specifications” for
further information.
RAISING THE VEHICLE
In the case where it is necessary to raise the vehicle, go to
an authorized dealer or service station.
TIRES
Tire Safety Information
Tire safety information will cover aspects of the following
information: Tire Markings, Tire Identification Numbers,
Tire Terminology and Definitions, Tire Pressures, and Tire
Loading.8
SERVICING AND MAINTENANCE 475
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Tire MarkingsNOTE:
•P (Passenger) — Metric tire sizing is based on U.S.
design standards. P-Metric tires have the letter “P”
molded into the sidewall preceding the size designation.
Example: P215/65R15 95H.
• European — Metric tire sizing is based on European
design standards. Tires designed to this standard have
the tire size molded into the sidewall beginning with the
section width. The letter Pis absent from this tire size
designation. Example: 215/65R15 96H.
• LT (Light Truck) — Metric tire sizing is based on U.S.
design standards. The size designation for LT-Metric
tires is the same as for P-Metric tires except for the letters
“LT” that are molded into the sidewall preceding the
size designation. Example: LT235/85R16.
• Temporary spare tires are designed for temporary emer-
gency use only. Temporary high pressure compact spare
tires have the letter “T” or “S” molded into the sidewall
preceding the size designation. Example: T145/80D18
103M.
• High flotation tire sizing is based on U.S. design stan-
dards and it begins with the tire diameter molded into
the sidewall. Example: 31x10.5 R15 LT.
Tire Markings
1 — U.S. DOT Safety Standards
Code (TIN) 4 — Maximum Load
2 — Size Designation 5 — Maximum Pressure
3 — Service Description 6 — Treadwear, Traction and
Temperature Grades
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Tire Identification Number (TIN)
The TIN may be found on one or both sides of the tire;
however, the date code may only be on one side. Tires with
white sidewalls will have the full TIN, including the date
code, located on the white sidewall side of the tire. Look forthe TIN on the outboard side of black sidewall tires as
mounted on the vehicle. If the TIN is not found on the
outboard side, then you will find it on the inboard side of
the tire.
EXAMPLE:
DOT MA L9 ABCD 0301
DOT = Department of Transportation
– This symbol certifies that the tire is in compliance with the U.S. Department of Transportation tire safety
standards and is approved for highway use
MA = Code representing the tire manufacturing location (two digits)
L9 = Code representing the tire size (two digits)
ABCD = Code used by the tire manufacturer (one to four digits)
03 = Number representing the week in which the tire was manufactured (two digits)
– 03 means the 3rd week
01 = Number representing the year in which the tire was manufactured (two digits)
– 01 means the year 2001
– Prior to July 2000, tire manufacturers were only required to have one number to represent the year in
which the tire was manufactured. Example: 031 could represent the 3rd week of 1981 or 1991
8
SERVICING AND MAINTENANCE 477
Page 482 of 633

Tire And Loading Information Placard
This placard tells you important information about the:
•Number of people that can be carried in the vehicle.
• Total weight your vehicle can carry.
• Tire size designed for your vehicle.
• Cold tire inflation pressures for the front, rear, and spare
tires.Loading
The vehicle maximum load on the tire must not exceed the
load carrying capacity of the tire on your vehicle. You will
not exceed the tire’s load carrying capacity if you adhere to
the loading conditions, tire size, and cold tire inflation
pressures specified on the Tire and Loading Information
placard in “Vehicle Loading” in the “Starting And Operat-
ing” section of this manual.
NOTE: Under a maximum loaded vehicle condition, gross
axle weight ratings (GAWRs) for the front and rear axles
must not be exceeded. For further information on GAWRs,
vehicle loading, and trailer towing, refer to “Vehicle Load-
ing” in the “Starting And Operating” section of this
manual.
To determine the maximum loading conditions of your
vehicle, locate the statement “The combined weight of
occupants and cargo should never exceed XXX kg or
XXX lbs” on the Tire and Loading Information placard. The
combined weight of occupants, cargo/luggage and trailer
tongue weight (if applicable) should never exceed the
weight referenced here.
Tire And Loading Information Placard
480 SERVICING AND MAINTENANCE
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WARNING!
Overloading of your tires is dangerous. Overloading
can cause tire failure, affect vehicle handling, and
increase your stopping distance. Use tires of the rec-
ommended load capacity for your vehicle. Never over-
load them.
482 SERVICING AND MAINTENANCE