1993 Buick LeSabre Owner's Manual - Page 289

Inspect hoses and replace they are cracked, if swollen or deteriorated.Tighten screw-type hose clamps. Clean the outside of the radiator and air conditioning condenser.Wash the pressure cap and neck. To help ensure proper operation, recommend a we pressure test of both the cooling system the and pressure cap. If you do not use your vehicle under any of these conditions, changeboth the fluid and filter every 100,000 miles(140 000 km). 8. Spark Plug Replacement* -- Replace spark plugs with the proper type. See "Specifications Chart" in the Index. 9. Spark Plug Wire Inspection*? 7. Transaxle Service -- Change both the fluid and filter every 15,000 miles (25 000 km) if the vehicle is mainly driven under one or more these of conditions: 0 -- Inspect for burns, cracks or other damage. Check the boot fit at the distributor and at the spark plugs. Replace wires as needed. In heavy city traffic where the outside temperature regularly reaches 90 F (32 C) or higher. In hilly or mountainous terrain. When doing frequent trailer towing. 10. Air Cleaner Filter Replacement* -- Replace every 30,000 miles (50 000 km) or more oftenunder dusty conditions. Ask your dealer for the proper replacement intervals for your driving conditions. 11. Fuel Tank, Cap and Lines Inspection"? -- Inspect 0 0 0 Uses such as found in taxi, police car or delivery service. fuel tank, cap and lines (including fuel rails and injection assembly, if equipped) for damageor leaks. Inspect fuel cap gasket for an even filler neck imprint or any damage. Replaceparts as needed. Periodic replacement of the fuel filter isnot required. * An Emission Control Service. -t The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item willnot nullify theemission warranty or limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all recommended maintenance services be perlormed at the indicated intervals and the maintenance be recorded in "Section E:Maintenance Record". 287