Perform Maintenance Every (Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Replace the engine air cleaner filter. 30,000 50 000 30
Inspect the transfer case fluid. 30,000 50 000 30
Replace the top row of spark plugs on 4.7L engines. ** 30,000 50 000 30
Replace the spark plugs on 3.7L and 5.7L engines. 30,000 50 000 30
Change the automatic transmission fluid & filter if using
your vehicle for any of the following: police, taxi, fleet or
frequent trailer towing.
60,000 100 000 60
Change the transfer case fluid if using your vehicle for
any of the following: police, taxi, fleet, off-road or fre-
quent trailer towing.
60,000 100 000 60
Inspect and replace PCV valve if necessary. 90,000 150 000 90
Flush and replace the engine coolant. 102,000 170 000 60
Replace the ignition cables on 4.7L engines. 102,000 170 000 102
Replace the side row of spark plugs on 4.7L engines. ** 102,000 170 000 102
444 MAINTENANCE SCHEDULES
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