GMC 2001 Savana - Manual (Page 385)

Long Trip/Highway Scheduled Maintenance
7-46
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: Inspect Positive Crankcase Ventilation (PCV) valve.
An Emission Control Service.
ACTUAL
SERVICED BY:
MILEAGE
DATE