GMC 2002 Savana Van Owner's Manual page 385

Long Trip/Highway Scheduled Maintenance
100,000 Miles (166 000 km)
j
Gasoline Engine Only: Inspect spark plug wires.
An Emission Control Service.
j
Gasoline Engine Only: Replace spark plugs. An Emission Control Service.
j
Change automatic transmission fluid and filter if the vehicle has a diesel
engine, if the vehicle's GVWR is over 8600 lbs. or 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.
j 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.
j Gasoline Engine Only (Except 8.1L V8): Inspect Positive
Crankcase Ventilation (PCV) valve.
An Emission Control Service.
7-46
DATE
ACTUAL
SERVICED BY:
MILEAGE