Jeep 2014 Grand Cherokee Owner's Manual page 638

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