Pontiac 1998 Grand Prix Owner's Manual page 353

Maintenance Schedule
45,000 Miles (75 000 km)
0
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
MILEAGE
See "Engine Oil" in the Index.
An Emission Control Service. (See footnote
*.)
0
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter if
necessary.
An Emission Control Service. (See footnote
T.)
rotation pattern
and
additional information.
(See footnote
+.)
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
50,000
Miles (83 000 km)
0
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
- In hilly or mountainous terrain.
90°F (32°C) or higher.
-
When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
rfyou do not use your vehicle under any o f these conditions, the fluid and
filter
do
not require changing.
7-8