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Service Intervals & Specifications: Notes

REPLACEMENT INTERVALS (1)

Component Months Miles
Air Filter
Normal Service 30 30,000
Severe Service (2) (3) 15,000
Automatic Transmission Band Adjustment
5.9L
Normal Service (2) 100,000
Severe Service (2) 30,000
Automatic Transmission Fluid & Filter
4.7L
Normal Service (2) 100,000
Severe Service (2) 30,000
5.9L
Normal Service (2) 100,000
Severe Service (2) 30,000
Coolant (4) (4)
Drive Belt (5)
Normal Service
4.7L 90 90,000
5.9L 60 60,000
Severe Service
4.7L (2) 75,000
5.9L (2) 60,000
Engine Oil & Oil Filter
Normal Service 6 6000
Severe Service (2) 3000
Front Differential Fluid (4WD)
Normal Service (6) (6)
Severe Service (2) 12,000
PCV Valve (7)
Normal Service 60 60,000
Severe Service (2) 30,000
Rear Differential Fluid
Normal Service (6) (6)
Severe Service (2) 12,000
Spark Plugs
Normal Service 30 30,000
Severe Service (2) 30,000
Spark Plug Wires
4.7L (8) (8)
5.9L
Normal Service 60 60,000
Severe Service (2) 60,000
Transfer Case Fluid (4WD)
Normal Service 120 120,000
Severe Service (2) 120,000
(1) Different interval may be required for normal and severe service. Severe service is described as long periods of engine idling, frequent short trip operation of less than 5 miles, trailer towing, off-highway operation, snow removal operation, or operating in dusty or excessively hot conditions.
(2) Monthly interval does not apply.
(3) Inspect air filter every 15,000 miles and replace as necessary. Replace at 30,000 miles unless previously replaced during inspection.
(4) Replace coolant at 60 months regardless of mileage.
(5) Inspect and replace, if necessary. After initial belt inspection or replacement, inspect and/or replace belt every 12 months or 15,000 miles.
(6) Normal service interval is not available from manufacturer. Manufacturer lists service schedule only under severe service conditions.
(7) Inspect PCV valve and replace as necessary. This service is recommended by manufacturer and is not required to maintain emissions warranty.
(8) Engine does not use spark plug wires.
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