1998 Pontiac Firebird Owner's Manual - Page 345
1998 Pontiac Firebird Manual
Page 345 highlights
I Short TripKity Maintenance Schedule I I DATE ACTUAL MILEAGE 96,000 Miles (160 000 km) 0 Change engine oil and filter (or every3 months, whichever occurs first). An Emission Control Service. 0 Change the rear axle gear lubricant if vehicle isused to pull a trailer. 0 Rotate tires.See "Tire Inspectionand Rotation" in the Index proper for rotation pattern and additional information. footnote +.) (See I I SERVICED BY: 99,000 Miles (165 000 km) 0 Change engine oil and filter (or every 3 months, whichever occursfist). An Emission ControlService. I DATE I 100,000 Miles (166 000 km) 0 Inspect spark plug wires. An Emission Control Service. 0 Replace spark plugs. An Emission Control Service. 0 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. Manual transmission fluid doesn't require change. I DATE I 7-20