594 MAINTENANCE SCHEDULES
Miles:
Or Months:
6
12
Or Kilometers:
Replace the spark
plugs – 6.2L Super-
charged Engine **
Replace the spark
plugs – 6.4L Engine
**
Flush and replace
the engine coolant/
intercooler at 120
months if not done
at 150,000 miles
(240,000 km).
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
18
24
30
36
42
48
54
60
66
72
78
84
90
96 102 108 114 120 126 132 138 144 150
X
X
I n f o r ma t i o n P r o v i d e d b y :
X
X
X