1997 Chevrolet Tahoe Owner's Manual - Page 359

Maintenance Schedule I Long Trip/Highway Definition -- Gacoline Engines Follow thismaintenance schedule only if none of the conditions fromthe Short Trip/City Maintenance Schedule istrue. Do not use this schedule if the vehicle is used for trailer towing, driven in a dusty area or used off paved roads. Use the Short Trip/City schedule for these conditions. Driving a vehicle with a fully warmed engine under highway conditions causes engine oil break to down slowel: Long TripMighway Intervals -- Gasoline Engines Every 30,000 Miles (50 000 km): Fuel Filter Replacement. Front Wheel Bearing Repack (2WD only)(or at each brake relining, whichever occurs first). Every 50,000 Miles (83 000 km): Automatic Transmission Service (severe conditions only). Every 60,000 Miles (100 km): Engine Accessory 000 Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection. Exhaust Gas Recirculation System Inspection. Evaporative Control System Inspection. Every 100,000 Miles (166000 km): Spark Plug Wire Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection. Every 150,000 Miles(240 000 km): Cooling System Service (orevery 60 months, whichever occurs first). These intervals only summarize maintenance services. Be sure tofollow the complete maintenance schedule on the following pages. 1 Long TripMighway Intervals -- Gasoline Engines I Every 7,500 Miles (12500 km): Engine Oil and Filter Change (or every 12 months, whichever occurs first). Chassis Lubrication (or every 12 months, whichever occurs first). Drive Axle Service. TireRotation. Every 15,000 Miles(25 000 km): Shields and Underhood Insulation Inspection (GVWR above 8,500 lbs. only). 7-6