Jeep 2007 Grand Cherokee Series Owner's Manual page 421

Miles
(Kilometers)
Change the engine oil and engine oil filter, if not
replaced at 3 months.
Rotate the tires.
Check spare tire for proper pressure and correct
stowage.
Inspect the engine air cleaner filter, replace if nec-
essary.
Inspect the PCV Valve, replace if necessary.
Replace the spark plugs.
Inspect the engine accessory drive belt, replace if
necessary.*
Drain and refill the transfer case fluid.
Inspect the brake linings.
Drain and refill the front and rear axle fluid.
78,000 81,000 84,000
(130 000) (135 000) (140 000)
X X
X
X
SCHEDULE "B" 421
87,000 90,000
(145 000) (150 000)
X X X
X X
X X
X
X
X
X
X
X
X
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S
8