1994 Buick Century Owner's Manual - Page 271

TO BE SERVICED (See Explanationof Scheduled Maintenance Services Following Schedules I and11) Item No. WHEN TO PERFORM Miles (kilometers) or Months, Whichever Occurs First See Explanationof Scheduled Maintenance Services Following SchedulesI and I1 Every 100,000 mi. ( 166 000 km) Every 30 000 mi. (50 000 km) I I MILES (000) . , KILOMETERS (000) 50 I 62.5 75 I I 6. Transaxle Service 7. Spark Plug Replacement* a a a I 8. Spark Plug Wire Inspection*? 9. EGR System Inspection (2.2L L4 Code 4 engine only)*? II 10.Air Cleaner Filter Replacement" See Explanation of Scheduled Maintenance Services Following Schedules and I1 I Every 30 000 mi. (50 000 km) a 1 1. Fuel Tank, Cap& Lines Inspection*? The servicesshown in this scheduleup to 45 000 miles (75 000 km) should be performed after 45 000 miles at the same intervals. * An Emission Control Service. ? The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in "Section E:Maintenance Record". 269