Page 489 of 536

•Heavy Loading.
•Taxi, police, or delivery service (commercial service).
•Off-road or desert operation.
•If equipped for and operating with E-85 (ethanol)
fuel.
NOTE: IfANY of these apply to you then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedules section of this manual.
NOTE: IfANY of these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first and follow
schedule “B” of the Maintenance Schedules section of
this manual.
NOTE: Most vehicles are operated under the conditions
listed for Schedule B. Second is Schedule
“A”. It is for vehicles that are not
operated under any of the conditions listed under Sched-
ule B.
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
NOTE: Under no circumstances should oil change in-
tervals exceed 6000 miles (10 000 km) or 6 months
whichever comes first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
MAINTENANCE SCHEDULES 489
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Page 490 of 536

At Each Stop for Fuel
•Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy 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.
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 coolant bottle, 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.
•Lubricate Drivetrain/Steering/Suspension Grease Fit-
tings (if equipped)
•Inspect the exhaust system.
•Inspect the brake hoses.
•Inspect the CV joints/U— joints (if equipped) and
front suspension components.
•Check the automatic transmission fluid level.
•Check the manual transmission fluid level.
•Check the coolant level, hoses, and clamps.
•Lubricate Front Drive Shaft Fitting (2500/3500, 4X4).
490 MAINTENANCE SCHEDULES
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Page 491 of 536

Schedule “B”
Follow schedule “B” if you usually operate your vehicle
under one or more of the following conditions.
•Day or night temperatures are below 32° F (0° C).
•Stop and go driving.
•Extensive engine idling.
•Driving in dusty conditions.
•Short trips of less than 10 miles (16 km).
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90° F (32° C).
•Trailer towing.
•Snowplowing.
•Heavy Loading.
•Taxi, police, or delivery service (commercial service).
•Off-road or desert operation.
•If equipped for and operating with E-85 (ethanol)
fuel.
NOTE: IfANY of these apply to you then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedules section of this manual.
NOTE: IfANY of these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first and follow
schedule “B” of the Maintenance Schedules section of
this manual.
NOTE: If none of these apply to you, then change your
engine oil at every interval shown on schedule Aof the
Maintenance Schedules section of this manual.
SCHEDULE “B” 491
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Page 492 of 536
Miles 3,000 6,000 9,000 12,000 15,000
(Kilometers) (5 000) (10 000) (15 000) (20 000) (25 000)
Change engine oil and engine oil filter at interval
shown or 3 months, whichever comes first. X X XXX
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
Change rear axle fluid. X
Change front axle fluid (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary. X
492 SCHEDULE “B”
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Page 493 of 536
Miles 18,000 21,000 24,000 27,000 30,000
(Kilometers) (30 000) (35 000) (40 000) (45 000) (50 000)
Change engine oil and engine oil filter at interval shown or
3 months, whichever comes first. XXXXX
Lubricate Front Drive Shaft Fitting (2500/3500, 4X4). X X X X X
Rotate tires. X X X
Check spare tire for proper pressure and correct stowage. X X X
Lubricate outer tie rod ends 2500/3500 (4X4) models only. X X X
Change rear axle fluid. X
Change front axle fluid (4X4). X
Check transfer case fluid level (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if necessary. X
Replace spark plugs. X
Inspect PCV valve, replace as necessary. ** X
SCHEDULE “B” 493
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Page 494 of 536
Miles 33,000 36,000 39,000 42,000 45,000
(Kilometers) (55 000) (60 000) (65 000) (70 000) (75 000)
Change engine oil and engine oil filter at interval
shown or 3 months, whichever comes first. X X XXX
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
Change rear axle fluid. X
Change front axle fluid (4X4). X
Inspect brake linings. X
Inspect engine air cleaner filter, replace if neces-
sary. X
494 SCHEDULE “B”
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Page 495 of 536
Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Change engine oil and engine oil filter at interval
shown or 3 months, whichever comes first. X X XXX
Lubricate Front Drive Shaft Fitting (2500/3500,
4X4). X X XXX
Rotate tires. X X X
Check spare tire for proper pressure and correct
stowage. XXX
Lubricate outer tie rod ends 2500/3500 (4X4) mod-
els only. XXX
Flush and replace engine coolant at 60 months, or
102,000 miles (170 000 km) whichever comes first. X
Drain and refill transfer case fluid (4X4). X
Change rear axle fluid. X
Change front axle fluid (4X4). X
Change 6-spd manual transmission fluid 2500/3500
models only. X
SCHEDULE “B” 495
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Page 496 of 536
Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (80 000) (85 000) (90 000) (95 000) (100 000)
Inspect brake linings. X X
Inspect engine air cleaner filter, replace if neces-
sary. X
Replace spark plugs. X
Inspect and replace ignition cables if necessary. X
Inspect PCV valve, replace as necessary. ** X
Drain and refill automatic transmission fluid and
change main sump filter*. X
496 SCHEDULE “B”
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