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SERVICING AND MAINTENANCE
CONTENTS
SCHEDULED SERVICING .................337
▫ 3.6L And 5.7L Engines ...................337
▫ 6.4L Engine ......................... .341
ENGINE COMPARTMENT .................345
▫ 3.6L Engine ......................... .345
▫ 5.7L Engine ......................... .346
▫ 6.4L Engine ......................... .347
▫ Checking Oil Level — 3.6L And 5.7L Engine . . .348
▫ Checking Oil Level — 6.4L Engine ...........348
▫ Adding Washer Fluid ...................349
▫ Maintenance-Free Battery .................349
DEALER SERVICE ...................... .350
▫ Engine Oil .......................... .351
▫ Engine Oil Filter ...................... .355▫
Engine Air Cleaner Filter .................355
▫ Air Conditioner Maintenance ..............356
▫ Accessory Drive Belt Inspection ............359
▫ Body Lubrication ..................... .360
▫ Windshield Wiper Blades .................361
▫ Exhaust System ....................... .363
▫ Cooling System ....................... .365
▫ Brake System ........................ .369
▫ Clutch Hydraulic System — Manual
Transmission (If Equipped) ................371
▫ Manual Transmission — If Equipped ........371
▫ Automatic Transmission — If Equipped ......371
▫ All Wheel Drive (AWD) — If Equipped .......373
▫ Rear
Axle ........................... .373
8
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RAISING THE VEHICLE ..................373
TIRES ............................... .374
▫ Tire Safety Information ..................374
▫ Tires — General Information ..............383
▫ Tire Types ........................... .389
▫ Spare Tires — If Equipped ................390
▫ Wheel And Wheel Trim Care ..............393
▫ Tire Chains (Traction Devices) .............394
▫ Tire Rotation Recommendations .............395
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES ..........396
▫ Treadwear ........................... .396
▫ Traction Grades ....................... .396▫
Temperature Grades .....................396
VEHICLE STORAGE .....................397
BODYWORK .......................... .397
▫ Protection From Atmospheric Agents ........397
▫ Body And Underbody Maintenance ..........398
▫ Preserving The Bodywork .................398
INTERIORS ........................... .399
▫ Seats And Fabric Parts ...................399
▫ Plastic And Coated Parts ..................400
▫ Leather Parts ......................... .400
▫ Glass Surfaces ........................ .401
336 SERVICING AND MAINTENANCE
Page 339 of 532

SCHEDULED SERVICING
3.6L And 5.7L Engines
Your vehicle is equipped with an automatic oil change
indicator system. The oil change indicator system will
remind you that it is time to take your vehicle in for
scheduled maintenance.
Based on engine operation conditions, the oil change
indicator message will illuminate. This means that service
is required for your vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely hot or cold
ambient temperatures, and E85 fuel usage will influence
when the “Change Oil” or “Oil Change Required” message
is displayed. Severe Operating Conditions can cause the
change oil message to illuminate as early as 3,500 miles
(5,600 km) since last reset. Have your vehicle serviced as
soon as possible, within the next 500 miles (800 km).
The “Oil Change Required” message will be displayed in
the instrument cluster and a single chime will sound,
indicating that an oil change is necessary.
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other than
your authorized dealer, the message can be reset byreferring to “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information.
NOTE:
Under no circumstances should oil change inter-
vals exceed 10,000 miles (16,000 km), 12 months or 350
hours of engine run time, whichever comes first. The 350
hours of engine run or idle time is generally only a concern
for fleet customers.
Severe Duty All Models
Change Engine Oil at 4,000 miles (6,500 km) or 350 hours of
engine run time if the vehicle is operated in a dusty and
off-road environment, or is operated predominantly at idle
or only very low engine RPM’s. This type of vehicle use is
considered Severe Duty.
Once A Month Or Before A Long Trip:
• Check engine oil level.
• Check windshield washer fluid level.
• Check tire pressure and look for unusual wear or
damage. Rotate tires at the first sign of irregular wear,
even if it occurs before your next scheduled service.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering (if equipped) and
fill as needed.
• Check function of all interior and exterior lights.
8
SERVICING AND MAINTENANCE 337
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Maintenance Plan — 3.6L And 5.7L
Required Maintenance Intervals
Refer to the maintenance chart for the required mainte-
nance intervals.
At Every Oil Change Interval As Indicated By OilChange Indicator System:
•Change oil and filter
• Rotate the tires.
Rotate at the first sign of irregular
wear, even if it occurs before your next scheduled
service
At Every Oil Change Interval As Indicated By Oil Change Indicator System:
•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
Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV joints. XX X XX
Inspect front suspension, tie rod ends, boot seals
and replace if necessary. XXX X X X X
338 SERVICING AND MAINTENANCE
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Inspect the rear axle fluid. Inspect the front axle
fluid (All Wheel Drive Only). XXX X X X X
Inspect the manual transmission fluid (if equipped). X X X X X X X
Inspect the brake linings, replace as necessary. X X X X X X X
Adjust park brake on vehicles equipped with four
wheel disc brakes. XXX X X X X
Inspect transfer case fluid (All Wheel Drive Only). X X X X X
Additional Maintenance
Replace engine air filter. X X X X X
Replace cabin/air conditioning filter. X X X X X X X
Replace spark plugs.* X
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first. XX
Change the manual transmission fluid (if equipped)
if using your vehicle for any of the following: Most of
your driving is at sustained speeds during hot
weather, above 90°F (32°C), driving in dusty condi-
tions, or stop and go driving. XX X
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SERVICING AND MAINTENANCE 339
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Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Change the transfer case fluid; if using your vehicle
for any of the following: police, taxi, fleet, off-road,
or frequent trailer towing. (All Wheel Drive Only). XX
Change the rear axle fluid and on models equipped
with All Wheel Drive (AWD) change the front axle
fluid if using your vehicle for any of the following:
police, taxi, fleet, off-road, or frequent trailer towing. XX X
Inspect and replace PCV valve if necessary. X
* The spark plug change interval is mileage based only,
yearly intervals do not apply.
WARNING!
• You can be badly injured working on or around a
motor vehicle. Do only service work for which you
have the knowledge and the right equipment. If you
have any doubt about your ability to perform a
(Continued)
WARNING! (Continued)
service job, take your vehicle to a competent me-
chanic.
• Failure to properly inspect and maintain your vehicle
could result in a component malfunction and effect
vehicle handling and performance. This could cause
an accident.
340 SERVICING AND MAINTENANCE
Page 343 of 532

Heavy Duty Use Of The Vehicle
Change engine oil at 4,000 miles (6,500 km) or 350 hours of
engine run time if the vehicle is operated in a dusty and off
road environment or is operated predominately at idle or
only very low engine RPM’s. This type of vehicle use is
considered Severe Duty.
6.4L Engine
The scheduled maintenance services listed in this manual
must be done at the times or mileages specified to protect
your vehicle warranty and ensure the best vehicle perfor-
mance and reliability. More frequent maintenance may be
needed for vehicles in severe operating conditions, such as
dusty areas and very short trip driving. Inspection and
service should also be done anytime a malfunction is
suspected.
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
A “Oil Change Required” message will be displayed in the
instrument cluster and a single chime will sound, indicat-
ing that an oil change is necessary.Based on engine operation conditions, the oil change
indicator message will illuminate. This means that service
is required for your vehicle. Have your vehicle serviced as
soon as possible, within the next 500 miles (800 km).
NOTE:
•
The oil change indicator message will not monitor the
time since the last oil change. Change your vehicle’s oil
if it has been six months since your last oil change, even
if the oil change indicator message is NOT illuminated.
• Change your engine oil more often if you drive your
vehicle off-road/track usage for an extended period of
time.
• Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or six months, whichever
comes first.
An authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other than
an authorized dealer, the message can be reset by referring
to the steps described under “Instrument Cluster Display”
in “Getting To Know Your Instrument Panel” for further
information.
8
SERVICING AND MAINTENANCE 341
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At Each Stop For Fuel
•Check the engine oil level. Refer to “Engine Compart-
ment” in this chapter for further information.
•
Check the windshield washer solvent and add if required.
Once A Month
• Check tire pressure and look for unusual wear or
damage.
• Inspect the battery, and clean and tighten the terminals
as required.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, and add as needed. •
Check all lights and other electrical items for correct
operation.
At Each Oil Change
• Change the engine oil filter.
• Inspect the brake hoses and lines.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
Maintenance Plan — 6.4L
Miles:6,000
12,000
18,000
24,000
30,000
36,000
42,000
48,000
54,000
60,000
66,000
72,000
78,000
84,000
90,000
96,000
102,000
108,000
114,000
120,000
126,000
132,000
138,000
144,000
150,000
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 126 132 138 144 150
Or Kilometers:
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
160,000
170,000
180,000
190,000
200,000
210,000
220,000
230,000
240,000
250,000
Change the engine oil and engine oil
filter. XXXXXXXXXXXXXXXXXXXXXXXXX
Rotate the tires, rotate at the first sign
of irregular wear, even if it occurs be-
fore scheduled maintenance. XXXXXXXXXXXXXXXXXXXXXXXXX
342 SERVICING AND MAINTENANCE