Every
30,000
Miles
(50
000
km)
Cooling System Service (or every
24
months, whichever occurs first)
Spark Plug Replacement
Fuel Filter Replacement
Air Cleaner Filter Replacement
Front Wheel Bearing Repack
Every
50,000
Miles
(83
000
km)
Automatic Transmission Service (severe conditions only)
Every
60,000
Miles
(100
000
km)
Spark Plug Wire Inspection
Engine Accessory Drive Belt Inspection
Fuel
Tank, Cap and Lines Inspection
Engine Timing Check
Schedule
1
Definition
-
Gasoline Engines With Heavy Duty
Emissions
Follow Maintenance Schedule
I
if
any one of these is true for your vehicle:
e
e
e
e
Most
trips are less than
5
to
10
miles
(8
to
16
km).
This
is
particularly
important when outside temperatures are below freezing.
Most trips include extensive idling (such as frequent driving
in
stop and
go traffic).
You operate
your
vehicle
in
dusty areas or off-road frequently.
You frequently tow
a
trailer or use a carrier on top of
your
vehicle.
Schedule
I
should also be followed
if
the vehicle is used for delivery
service, police, taxi, or other commercial application.
Schedule I Intervals
-
Gasoline Engines with Heavy Duty
Emissions
Every
3,000
Miles
(5
000
km)
Engine Oil and Filter Change (or every
3
months, whichever occurs first)
Chassis Lubrication (or every
3
months, whichever occurs first)
Drive Axle Service
7-6
