2004 Jeep Grand Cherokee Owner's Manual - Page 309

SCHEDULE "B" 309 M Miles (Kilometers) Inspect the drive belt and replace as needed. Not required if belt was previously replaced. Drain and refill the transfer case fluid (Selec-Trac and Quadra-Trac Models). 108,000 (173 000) 111,000 (178 000) 114,000 (182 000) 117,000 (187 000) 120,000 (192 000) X X A I N T E N A N C E S C H E D U L E S Inspection and service should also be performed anytime a malfunction is observed or suspected. Retain all receipts. This maintenance is recommended by the manufacturer to the owner, but is not required to maintain emissions warranty. ‡Off-highway operation, trailer towing, taxi, limousine, bus, or other types of commercial service or prolonged operation with heavy loading, especially in hot weather, require front and rear axle service indicated with a ‡ in Schedule "B". Perform these services if the vehicle is usually operated under these conditions. 8