2002 Buick Century Owner's Manual - Page 268

Automatic Transaxle Fluid When to Check and Change A good time to check your automatic transaxle fluid level is when the engine oil is changed. Change both the fluid and filter every 50,000 miles (83 000 km) if the vehicle is mainly driven under one or more of these conditions: 7. Remove the passenger compartment air filter. 8. Then replace the old air filter with the new one. For the type of filter to use, see "Normal Maintenance Replacement Parts" in the Index. 9. Reinstall the air inlet grille. 10. Reinstall the air inlet grille retainers. 11. Reattach the hood weatherstrip. 12. Reconnect the windshield washer pump hose to the fender rail and air inlet grille. 13. Close the hood. 14. Return the windshield wipers to the park position. D In heavy city traffic where the outside temperature regularly reaches 90_F (32_C) or higher. D In hilly or mountainous terrain. D When doing frequent trailer towing. D 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 and filter at 100,000 miles (166 000 km). See "Scheduled Maintenance Services" in the Index. 6-18