Chevrolet 2004 Classic, Owner'S Manual, Page: 313 / 348

90,000 Miles (150 000 km)
❑
Change engine oil and filter (or every 12 months,
whichever occurs first). An Emission Control
Service.
❑
Replace engine air cleaner filter. See Engine Air
Cleaner/Filter on page 5-17 for more information.
An Emission Control Service.
❑
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See fo.)
97,500 Miles (162 500 km)
❑
Change engine oil and filter (or every 12 months,
whichever occurs first). An Emission Control
Service.
❑
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See fo.)
100,000 Miles (166 000 km)
❑
Inspect spark plug wires. An Emission Control
Service.
❑
Replace spark plugs. An Emission Control Service.
❑
Change automatic transaxle 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 do not use your vehicle under any of these
conditions, the fluid and filter do not require changing.
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 5-19 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.
6-15