Page 274 of 532

CAUTION!(Continued)
•Then, during the first 500 miles (805 km) that a trailer
is towed, do not drive over 50 mph (80 km/h) and do
not make starts at full throttle. This helps the engine
and other parts of the vehicle wear in at the heavier
loads.
Towing Requirements — Tires
• Do not attempt to tow a trailer while using a compact
spare tire.
• Do not drive more than 50 mph (80 km/h) when towing
while using a full size spare tire.
• Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to
“Tires” in “Servicing And Maintenance” for proper tire
inflation procedures.
• Check the trailer tires for proper tire inflation pressures
before trailer usage.
• Check for signs of tire wear or visible tire damage before
towing a trailer. Refer to “Tires” in “Servicing And
Maintenance” for the proper inspection procedure. •
When replacing tires, refer to “Tires” in “Servicing And
Maintenance” for the proper tire replacement proce-
dures. Replacing tires with a higher load carrying capac-
ity will not increase the vehicle’s GVWR and GAWR
limits.
Towing Requirements — Trailer Brakes
• Do not interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible per-
sonal injury.
• An electronically actuated trailer brake controller is
required when towing a trailer with electronically actu-
ated brakes. When towing a trailer equipped with a
hydraulic surge actuated brake system, an electronic
brake controller is not required.
• Trailer brakes are recommended for trailers over
1,000 lbs (453 kg) and required for trailers in excess of
2,000 lbs (907 kg).
272 STARTING AND OPERATING
Page 309 of 532

7. Mount the spare tire.
CAUTION!
Do not attempt to raise the vehicle by jacking on
locations other than those indicated.NOTE:
•For vehicles so equipped, do not attempt to install a
center cap or wheel cover on the compact spare.
• Refer to “Compact Spare Tire” and to “Limited-Use
Spare” under “Tires—General Information” in “Servic-
ing And Maintenance” for additional warnings, cau-
tions, and information about the spare tire, its use, and
operation.
8. Install the lug nuts with the cone shaped end of the lug nut toward the wheel. Lightly tighten the lug nuts.
WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the wheel nuts fully until the vehicle has
been lowered. Failure to follow this warning may
result in serious injury.
9. Lower the vehicle to the ground by turning the jack handle counterclockwise.
10. Refer to “Torque Specifications” in “Technical Specifi- cations” section for proper lug nut torque.
Mounting Spare Tire
7
IN CASE OF EMERGENCY 307
Page 337 of 532

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
Page 338 of 532

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
Page 340 of 532

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
Page 341 of 532

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
8
SERVICING AND MAINTENANCE 339
Page 342 of 532

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