Jeep Grand Cherokee 2013 Owner's Manual page 670

M
668 MAINTENANCE SCHEDULES
A
I
Mileage or time passed
N
(whichever comes first)
T
E
N
A
N
C
E
Change transfer case fluid.
S
C
Inspect and replace PCV valve if necessary.
H
** The spark plug change interval is mileage based only,
E
D
yearly intervals do not apply.
U
L
E
S
8
Or Years: 2 3
Or Kilometers:
4 5 6 7 8 9 10 11 12 13 14
X
X
15