2008 Jeep Grand Cherokee Owner's Manual - Page 448

M 448 MAINTENANCE SCHEDULES A I N T E N Maintenance Items A N Check the PCV valve, replace if necessary. Perform the first inC spection at 60,000 miles (100 000 km) or 60 months. E Inspect the transfer case fluid. S C H E D U L E S Perform Maintenance Every (Where time and mileage are listed, follow the interval that occurs first.) Miles 30,000 30,000 30,000 30,000 60,000 60,000 102,000 102,000 102,000 120,000 120,000 Kilometers 50 000 50 000 50 000 50 000 100 000 100 000 170 170 170 200 200 000 000 000 000 000 or Months 30 30 30 30 60 60 60 102 102 120 120 8 Replace the top row of spark plugs (4.7L Only). ** Replace the spark plugs (3.7L/5.7L Engines). Change the automatic transmission fluid & filter if using your vehicle for any of the following: police, taxi, fleet or frequent trailer towing. Change the transfer case fluid if using your vehicle for any of the following: police, taxi, fleet, off-road or frequent trailer towing. Flush and replace the engine coolant. Replace the ignition cables (4.7L Only). Replace the side row of spark plugs (4.7L Only). ** Change the automatic transmission fluid & filter. Replace accessory drive belt(s) (3.7L/4.7L/5.7L Engines).