1997 Pontiac Bonneville Owner's Manual - Page 333

Short Trip/City Maintenance Schedule ~ ~~ 15,000 Miles (25 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 18,000 Miles (30 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Inspect air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. An Emission Control Service. (See footnote?.) Lubricate chassis components (or every 6 months, whichever occurs first). (See footnote #.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additionalinformation. (See footnote +.) DATE ACTUAL MILEAGE SERVICED B Y I T E I ACTUAL MILEAGE ISERVICED BY: I 7-10