Page 406 of 493

Drain And Refill
Vehicles operated in normal service do not have regularly
scheduled oil changes. If fluid has become contaminated
with water or subjected to severe service, follow the
recommended change intervals in Maintenance Schedule
“B” in Section 8 of this manual.
Lubricant Selection
Refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type.
NOTE:The presence of water in the gear lubricant will
result in corrosion and possible failure of differential
components. Operation of the vehicle in water, as may be
encountered in some off-highway types of service, will
require draining and refilling the axle to avoid damage.
Limited-Slip Differentialsin vehicles equipped with
10.5”/11.5” AxlesDO NOT REQUIREany limited slip
oil additive (friction modifiers).
Transfer Case — If Equipped
Fluid Level Check
This fluid level can be checked by removing the filler
plug. The fluid level should be to the bottom edge of the
filler plug hole with the vehicle in a level position.
Lubricant Selection
Refer to Fluids, Lubricants and Genuine Parts for the
correct lubricant type.
Manual Transmission — If Equipped
Fluid Level Check
This fluid level can be checked by removing the filler
plug. If the level of the lubricant is more than 1/4” below
the bottom of the filler hole while the vehicle is on level
ground, enough lubricant should be added to bring the
level to the bottom of the filler hole.
406 MAINTAINING YOUR VEHICLE
Page 443 of 493

•Off-road or desert operation.
•Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
NOTE:Most vehicles are operated under the conditions
listed for ScheduleB.
NOTE:IfANYof these apply to you then change your
coolant every 101,250 miles (162 000 km) or 60 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedulessection of this manual.
Second is Schedule“A”. It is for vehicles that are not
operated under any of the conditions listed under Sched-
uleB.
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
At Each Stop for Fuel
•Check the engine oil level about 15 minutes after a
fully warmed engine is shut off. Checking the oil level
while the vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil only when
the level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required. When refilling the washer fluid reservoir,
take some washer fluid and apply it to a cloth or towel
and wipe clean the wiper blades, this will help blade
performance.
•Drain water from the fuel filter.
MAINTENANCE SCHEDULES 443
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Page 444 of 493
Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the batteries and clean and tighten the termi-
nals as required.
•Check the fluid levels of coolant reservoir, brake
master cylinder, and transmission and transfer case (if
equipped), add as needed.
•Check Filter Minder™. Replace air cleaner filter
element if necessary.
•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 the brake hoses.
•Inspect the U-Joints ( if equipped) and front suspen-
sion components.
•Check the automatic transmission fluid level.
•Check the manual transmission fluid level.
•Check the coolant level, hoses, and clamps.
•Lubricate outer tie rod ends 2500/3500 (4X4) models
only.
•Lubricate Front Drive Shaft Fitting (2500/3500, 4X4).
444 MAINTENANCE SCHEDULES
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Page 452 of 493
Miles 78,750 82,500 86,250 90,000 93,750
(Kilometers) (126 000) (132 000) (138 000) (144 000) (150 000)
Change engine oil and engine oil filter. X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X
Check spare tire for proper pressure and correct
stowage.XX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.XX
Inspect drive belt, replace as required. X
Change rear axle fluid.X
Change front axle fluid (4X4). X
Check transfer case fluid level (4X4). X
Inspect fan hub.X
Inspect damper.X
Inspect water pump weep hole for blockage. X
452 SCHEDULE “B”
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Page 459 of 493
Schedule “A”
Miles 7,500 15,000 22,500 30,000 37,500
(Kilometers) (12 000) (24 000) (36 000) (48 000) (60 000)
[Months] [6] [12] [18] [24] [30]
Change engine oil and engine oil filter. X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.X X XXX
Check transfer case fluid level (4X4). X
Inspect water pump weep hole for blockage X X
Replace fuel filter element. Clean the water in fuel
sensor.XX
Inspect drive belts, replace as necessary. X
Inspect brake linings. X
SCHEDULE “A” 459
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Page 461 of 493
Miles 45,000 52,500 60,000 67,500 75,000
(Kilometers) (72 000) (84 000) (96 000) (108 000) (120 000)
[Months] [36] [42] [48] [54] [60]
Change engine oil and engine oil filter. X X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.X X XXX
Check transfer case fluid level. X
Flush and replace engine coolant at 60 months, if
not replaced at 102,000 miles (163 000 km).X
Inspect drive belts, replace as necessary. X X
Inspect water pump weep hole for blockage X X X
Replace fuel filter element. Clean the water in fuel
sensor.XXX
SCHEDULE “A” 461
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Page 463 of 493
Miles 82,500 90,000 97,500 100,000 105,000
(Kilometers) (132 000) (144 000) (156 000) (160 000) (168 000)
[Months] [66] [72] [78] [84]
Change engine oil and engine oil filter. X X
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4).X X XXX
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only.X X XXX
Flush and replace engine coolant, if not replaced at
60 mos.X
Check transfer case fluid level (4X4). X
Inspect drive belt, replace as required. X
Inspect fan hub. X
Inspect damper. X
Inspect water pump weep hole for blockage. X X
SCHEDULE “A” 463
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Page 465 of 493
Miles 112,500 120,000 127,500 135,000 142,500 150,000
(Kilometers) (181 000) (193 000) (205 000) (217 000) (229 000) (241 000)
[Months] [90] [96] [102] [108] [114] [120]
Change engine oil and engine oil filter. X X X
Lubricate Front Drive Shaft Fitting (2500/
3500, 4X4).X X XXXX
Rotate tires. X X X X X X
Check spare tire for proper pressure and cor-
rect stowage.X X XXXX
Lubricate outer tie rod ends 2500/3500 (4X4)
models only.X X XXXX
Flush and replace engine coolant at 120
months, if not replaced at 100,000 miles (160
000 km).X
Inspect drive belt, replace as required. X X
Drain and refill transfer case fluid (4X4). X
Check tranfer case fluid level (4X4).X
Inspect fan hub. X X
SCHEDULE “A” 465
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