2003 Chevrolet Avalanche Owner's Manual - Page 450

At Least Twice a Year Restraint System Check Make sure the safety belt reminder light and all your belts, buckles, latch plates, retractors and anchorages are working properly. Look for any other loose or damaged safety belt system parts. If you see anything that might keep a safety belt system from doing its job, have it repaired. Have anytorn or frayed safety belts replaced. Also look for any opened or broken air bag coverings, and have them repaired or replaced. (The air bag system does not need regular maintenance.) Spare Tire Check At least twice a year, after the monthly inflation check of the spare tire determines that the spare is inflated to the correct tire inflation pressure, make sure that the spare tire is stored securely. Push, pull, and then try to rotate or turn the tire. If it moves, use the wheel wrenchhatchet to tighten the cable. See Changing a Flat Tire on page 5-67. Engine Air Cleaner Filter Restriction Indicator Check Your vehicle may be equipped with an engine air cleaner filter restriction indicator located on the air cleaner in the engine compartment. The indicator lets you know when the air cleaner filter is dirty and needs to be changed. Check the indicator at least twice a year or when your engine oil is changed, whichever occurs first. See Engine Air CleanedFilter on page 5-19 for more information. Inspect your air cleaner filter restriction indicator more often if the vehicle is used in dusty areas or under off road conditions. 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 Cleaning the Outside of Your Vehicle on page 5-88. 6-11