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Service Intervals & Specifications

REPLACEMENT INTERVALS (1)

Component Miles
Air Filter 30,000
Automatic Transmission 30,000
Coolant (2)
Manual Transmission 37,500
Oil & Filter 7500
PCV Valve (4.7L) (3) 60,000
Spark Plugs 30,000
Spark Plug Wires 60,000
Transfer Case 30,000
(1) Under normal operating conditions.
(2) Replace coolant at 36 months, regardless of mileage, then replace every 24 months after that.
(3) Inspect and replace if necessary.
BELT ADJUSTMENT

Application Tension Lbs. (Kg)
Serpentine Belt (1)
New Belts (2) 180-200 (81.7-90.8)
Used Belts 140-160 (63.6-72.6)
(1) Grand Cherokee 4.7L engines are equipped with an automatic belt tensioner. DO NOT attempt to adjust belt tension.
(2) A belt is considered new if it has been used 15 minutes or less.