100,000 Miles (166 000 km)
❑ V8 Engine Only: Inspect spark plug wires.
An
Emission Control Service.
❑ Replace spark plugs.
An Emission Control Service.
❑ Change automatic transmission fluid and filter if
the vehicle is mainly driven under one or more
of these conditions:
− In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C) or
higher.
− In hilly or mountainous terrain.
− When doing frequent trailer towing.
− Uses such as found in taxi, police or delivery
service.
❑ If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transmission fluid, change
both the fluid and filter
❑ Automatic Transfer Case Only: Change transfer case
fluid.
❑ V8 Engine Only: Inspect Positive Crankcase
Ventilation (PCV) valve.
An Emission Control Service.
150,000 Miles (240 000 km)
❑ Drain, flush and refill cooling system (or every
60 months since last service, whichever occurs first).
See
Engine Coolant on page 5-24
for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.
An Emission Control Service.
❑ Inspect engine accessory drive belt.
An Emission
Control Service.
6-10
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