1998 Buick Century Owner's Manual - Page 336

At Least Twice a Year Restraint System Check Make sure thesafety belt reminder light and all your belts, buckles, latch plates, retractors and anchorages are working properly. If your vehicle has a built-in child restraint, alsoperiodically make sure the harness straps, latch plates, buckle, clip, retractorsand anchorages are working properly. Look for any other loose or damaged safety belt and built-in child restraintsystem parts. If you see anything that might keep a safety belt or built-in child restraint system from doing its job, have it repaired. Have any torn or frayed safety belts or harness straps replaced. Also look forany opened or broken air bag coverings, and have them repaired or replaced.(The air bag system does not need regular maintenance.) Automatic Transaxle Check Check the transaxle fluid level; add if needed. See "Automatic Transaxle" in the Index. A fluid loss may indicate a problem. Check the system and repair if needed. At Least Once a Year Key Lock Cylinders Service Lubricate the key lock cylinderswith the lubricant specified in Part D. Body Lubrication Service Lubricate all hinges and latches includingthose for the body doors, hood, rear compartment, glove box door, console door and any folding seathardware. Part D tells you what to use.More frequent lubrication may be required when exposed to a corrosive environment. Wiper Blade Check Inspect wiper blades for wear or cracking.Replace blade inserts that appear worn or damaged or that streak or miss areas of the windshield. Also see "Wiper Blades, Cleaning" in the Index. 7-14