Pontiac 1999 Bonneville, Owner'S Manual

Page: 343 / 392

Short Trip/City Scheduled Maintenance
yellow blue
7-21
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.
– 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 transaxle fluid,
change both the fluid and filter.
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
cooling system and pressure cap.
An Emission Control Service.
ACTUAL
SERVICED BY:
MILEAGE
DATE