Pontiac 1998 Firebird Owner's Manual page 336

I
Short TripKity Maintenance Schedule
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30,000 Miles
(50 000 km)
0
Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
0
Change the rear axle gear lubricant if vehicle is used to pull a trailer,
0
Replace air cleaner filter.
0
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
An
Emission
Control
Sewice.
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote?.)
under one or more of these conditions:
-
In heavy city traffic where the outside temperature regularly reaches
-
In hilly
or mountainous terrain.
- When doing frequent trailer towing.
-
Uses such as found in taxi, police or delivery service.
If
you do not use your vehicle under any of these conditions, change the fluid
andfilter every 50,000 m i l e s (83 000 km).
rotation pattern and additional information. (See footnote
+.)
0
Change automatic transmission fluid and filter if the vehicle is mainly driven
90°F (32°C) or higher.
C l
Rotate tires, See "Tire Inspection and Rotation" in the Index for proper
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DATE
7-11