Page 233 of 436

smoke, perfumes, etc.) from sticking to the windows.
Contaminates increase the rate of window fogging.
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 is recommended. Refer to Fluids and
Genuine Parts in Section 7 for the proper coolant type.
When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation is
encountered, operate the transmission in a lower gear to
increase engine RPM, coolant flow and fan speed. When
stopped in heavy traffic, it may be necessary to shift into
N (Neutral) and depress the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.Your air conditioning system is also equipped with an
automatic recirculation system. When the system senses
a heavy load or high heat conditions, it may use partial
Recirculation A/C mode to provide additional comfort.
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.
Vacation Storage
Anytime you store your vehicle, or keep it out of service
(i.e. vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh
air and high blower setting. This will insure adequate
system lubrication to minimize the possibility of com-
pressor damage when the system is started again.
INSTRUMENT PANEL AND CONTROLS 233
4
Page 388 of 436
Once a Month
•Check the 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 transmission, and add as needed.
•Check all lights and all other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the exhaust system.
•Inspect brake hoses.
•Inspect the CV joints (If equipped) and front suspen-
sion components.
•Check the coolant level, hoses, and clamps.
•After completion of off-road operation, the underside
of the vehicle should be thoroughly inspected. Exam-
ine threaded fasteners for looseness.
388 MAINTENANCE SCHEDULES
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Page 391 of 436
Miles 18,000 21,000 24,000 27,000 30,000
(Kilometers) (30 000) (35 000) (40 000) (45 000) (50 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months.X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary.X
Inspect the PCV Valve, and replace if necessary. X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X
Drain and refill the front and rear axle fluid. X
Inspect the manual transmission fluid, add as nec-
essary (3.7L Only).X
Inspect the transfer case fluid, add if necessary. X
SCHEDULE “B” 391
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Page 393 of 436
Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months.X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary.X
Inspect the PCV Valve, and replace if necessary. X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X X
Drain and refill the front and rear axle fluid. X
Inspect manual transmission fluid, add as neces-
sary (3.7L Only).X
Drain and refill the automatic transmission fluid.
Replace main sump filter and spin-on cooler return
filter (if equipped).‡X
Inspect the drive belt, and replace as needed. Not
required if belt was previously.X
SCHEDULE “B” 393
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Page 396 of 436
Miles 78,000 81,000 84,000 87,000 90,000
(Kilometers) (130 000) (135 000) (140 000) (145 000) (150 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months.X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary.X
Inspect the PCV Valve, and replace if necessary. X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X
Drain and refill the front and rear axle fluid. X
Inspect the drive belt, and replace as needed. Not
required if belt was previously replaced.X
Inspect the manual transmission fluid, add as nec-
essary (3.7L Only).X
Inspect the transfer case fluid, add if necessary. X
396 SCHEDULE “B”
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Page 398 of 436
Miles 108,000 111,000 114,000 117,000 120,000
(Kilometers) (180 000) (185 000) (190 000) (195 000) (200 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months.X X XXX
Rotate the tires. X X X
Inspect the engine air filter element, replace if
necessary.X
Inspect the PCV Valve, and replace if necessary. X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X X
Drain and refill the front and rear axle fluid. X
Inspect the manual transmission fluid, add as nec-
essary (3.7L Only).X
Drain and refill the automatic transmission fluid.
Replace main sump filter and spin-on cooler return
filter (if equipped).‡X
Inspect the drive belt, and replace as needed. Not
required if belt was previously replaced.X
398 SCHEDULE “B”
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Page 401 of 436
Miles 138,000 141,000 144,000 147,000 150,000
(Kilometers) (230 000) (235 000) (240 000) (245 000) (250 000)
Change the engine oil and engine oil filter, if not
replaced at 3 months.X X XXX
Rotate the tires. X X
Inspect the engine air filter element, replace if
necessary.X
Inspect the PCV Valve, and replace if necessary. X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X
Drain and refill the front and rear axle fluid. X
Inspect the manual transmission fluid, add as nec-
essary (3.7L Only).X
Inspect the transfer case fluid, add if necessary. X
Inspect the drive belt, and replace as needed. Not
required if belt was previously replaced.X
Flush and replace the engine coolant/anti-freeze, if
not done at 120,000 miles (200 000 km).X
SCHEDULE “B” 401
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Page 403 of 436
Schedule “A”
Miles 6,000 12,000 18,000 24,000 30,000
(Kilometers) (10 000) (20 000) (30 000) (40 000) (50 000)
[Months] [6] [12] [18] [24] [30]
Change the engine oil and engine oil filter. X X X X X
Rotate the tires. X X X X X
Inspect the engine air filter element, and replace
if necessary.X
Replace the spark plugs (3.7L Only).X
Inspect the brake linings. X
Inspect the manual transmission fluid, add as nec-
essary (3.7L Only).X
Inspect the transfer case fluid, add as necessary. X
SCHEDULE “A” 403
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