Page 479 of 528
MAINTENANCE SCHEDULES
CONTENTS
mEmission Control System Maintenance........480
mMaintenance Schedules Ð 6.7L Turbo Diesel....480
NOil Change Indicator System.............482NMaintenance Schedule..................483
mMaintenance Schedule Ð 5.7L Gas Engine.....491
NRequired Maintenance Intervals...........494
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Page 480 of 528

EMISSION CONTROL SYSTEM MAINTENANCE
The ªScheduledº maintenance services, listed inbold
typein this section (Section 8) must be done at the times
or mileages specified to assure the continued proper
functioning of the emission control system. These, and all
other maintenance services included in this manual,
should be done to provide best vehicle performance 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 also should be done any time a
malfunction is suspected.
NOTE:Maintenance, replacement, or repair of the emis-
sion control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part which has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULES Ð 6.7L TURBO
DIESEL
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
At Each Stop for Fuel
²Check the engine oil level about 30 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.
480 MAINTENANCE SCHEDULES
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Page 481 of 528

²Check 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.
Once a Month
²Check tire pressure and look for unusual wear or
damage.
²Inspect the batteries and clean and tighten the termi-
nals as required.
²Check the fluid levels of coolant reservoir, transmis-
sion and transfer case (if equipped), add as needed.
²Check master cylinder reservoir fluid level for indica-
tions of brake maintenance.
²Check Filter MinderŸ. Replace air cleaner filter
element if necessary.
²Check all lights and all other electrical items for correct
operation.
At Each Oil Change
²Change the engine oil filter.
²Inspect the exhaust system.
²Inspect the brake hoses.
²Inspect the U-Joints ( if equipped) and front suspen-
sion components.
²Check the automatic transmission fluid level.
²Check the manual transmission fluid level.
²Check the coolant level, hoses, and clamps.
²Lubricate outer tie rod ends (4X4) models only.
²Lubricate Front Drive Shaft Fitting (4X4).
MAINTENANCE SCHEDULES 481
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Page 482 of 528

Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts.
Oil Change Indicator System
Your vehicle is equipped with an engine oil change
indicator system. This system will alert you when it is
time to change your engine oil by displaying the words
ªOil Change Requiredº on your Electronic Vehicle Infor-
mation Center (EVIC). The engine oil change indicator
system is duty cycle based, which means the engine oil
change interval may fluctuate depending on your per-
sonal driving style. Driving styles such as frequent stopand go type driving can increase the frequency of the
engine oil change. This is the result of more frequent
regeneration of the exhaust aftertreatment system, which
can decrease the life of the engine oil. Failure to change
the engine oil per the maintenance schedule can result in
internal engine damage.
For information on resetting the Oil Change Indicator
message, refer to ªOil Change Required ± If Equipped,º
under ªSystem Status (EVIC Displays)º in the ªElectronic
Vehicle Information Center (EVIC)º Section of this
manual.
482 MAINTENANCE SCHEDULES
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Page 483 of 528
Maintenance Schedule
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 X X X
Lubricate Front Drive Shaft Fitting (4X4). X X X X X
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Lubricate outer tie rod ends. X X X X X
Check transfer case fluid level (4X4). X
Change front axle fluid (3500/4500/5500 4X4) (Die-
sel Engine only).XX
Change rear axle fluid (3500 4X4 and 4X2) (Diesel
Engine Only)XX
Change automatic transmission fluid. X
Replace fuel filter element. X X
MAINTENANCE SCHEDULES 483
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Page 484 of 528
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]
Inspect brake linings. X
Inspect and adjust parking brake if necessary. X
Inspect fan hub.X
Inspect damper.X
Inspect front wheel bearings. X
Inspect drive belt, replace as necessary. X
484 MAINTENANCE SCHEDULES
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Page 485 of 528
Miles 45,000 52,500 60,000 67,500 75,000
(Kilometers) (72 000) (84 000) (97 000) (109 000) (121 000)
[Months] [36] [42] [48] [54] [60]
Change engine oil and engine oil filter. X X X X X
Lubricate Front Drive Shaft Fitting (4X4). X X X X X
Rotate tires. X X X X X
Check spare tire for proper pressure and correct
stowage.X X XXX
Lubricate outer tie rod ends. X X X X X
Drain and refill transfer case fluid (4X4). X
Change front axle fluid (3500/4500/5500 4X4) (Die-
sel Engine only).XXX
Change rear axle fluid (3500 4X4 and 4X2) (Diesel
Engine only)XXX
Change rear axle fluid (4500/5500 4X4 and 4X2). X
Change automatic transmission fluid. X
Change manual transmission fluid. X
MAINTENANCE SCHEDULES 485
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Page 486 of 528
Miles 45,000 52,500 60,000 67,500 75,000
(Kilometers) (72 000) (84 000) (97 000) (109 000) (121 000)
[Months] [36] [42] [48] [54] [60]
Flush and replace engine coolant at 60 months, if
not replaced at 100,000 miles (160 000 km).X
Inspect drive belt, replace as necessary. X X
Replace fuel filter element. X X X
Inspect brake linings. X X
Inspect and adjust parking brake if necessary. X X
Inspect fan hub. X
Inspect damper. X
Inspect front wheel bearings. X
Replace Crankcase Ventilation Filter (CCV). X
486 MAINTENANCE SCHEDULES
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