Cadillac 2002 DeVille Owner's Manual page 403

Scheduled Maintenance
100,000 Miles (166 000 km)
j Replace spark plugs.
An Emission Control Service.
j 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.
– Use such as limousine service.
– Uses such as high performance operation.
If you do not use your vehicle under any of these conditions, the fluid and
filter do not require change until the message CHANGE TRANS FLUID
appears on the Driver Information Center.
150,000 Miles (240 000 km)
j Drain, flush and refill cooling system (or every 60 months since last
service, whichever occurs first). See "Engine Coolant" in the Index 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.
DATE
ACTUAL
SERVICED BY:
MILEAGE
DATE
ACTUAL
SERVICED BY:
MILEAGE
7-15