2005 Pontiac Bonneville Owner's Manual - Page 400

97,500 Miles (162 500 km) ❑ Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (See footnote *.) ❑ Rotate tires. See Tire Inspection and Rotation on page 5-85 for proper rotation pattern and additional information. (See footnote @.) (See footnote +.) − When doing frequent trailer towing. − Uses such as found in taxi, police or delivery service. ❑ If you have not used your vehicle under severe service conditions listed previously and, therefore, have not changed your automatic transaxle fluid, change both the fluid and filter. 100,000 Miles (166 000 km) ❑ V6 engine only: Inspect spark plug wires. An Emission Control Service. ❑ Replace spark plugs. An Emission Control Service. ❑ 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. 150,000 Miles (240 000 km) ❑ Drain, flush and refill cooling system (or every 60 months since last service, whichever occurs first). See Engine Coolant (3.8L V6 Engine) on page 5-31 or Engine Coolant (4.6L V8 Engine) on page 5-34 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. ❑ Inspect engine accessory drive belt. An Emission Control Service. 6-18