1995 GMC Yukon Owner's Manual - Page 371

Part A: Scheduled Maintenance Services Using Your Maintenance Schedule We at General Motors want to help you keep your vehicle in good working condition. But we don't know exactly how you'll drive it. You may drive very short distances only a few times a week. Or you may drive long distances all the time in very hot, dusty weather. You may use your vehicle in making deliveries. Or you may drive it to work, to do errands or in many other ways. Because of all the different ways people use their GM vehicles, maintenance needs vary. You may even need more frequent checks and replacements than you'll find in the schedules in this section. So please read this section and note how you drive. If you have any questions on how to keep your vehicle in good condition, see your GM dealer. This part tells you the maintenance services you should have done and when you should schedule them. If you go to your dealer for your service needs. you'll know that GM-trained and supported service people will perform the work using genuine GM parts. The proper fluids and lubricants to use are listed in Part D. Make sure whoever services your vehicle uses these. All parts should be replaced and all necessary repairs done beCore you or anyone else drivesthe vehicle. These schedules are forvehicles that: 0 carry passengers and cargo within recommended limits. You will find these limits on your vehicle's CertificatiodTire label. See "Loading Your Vehicle" in the Index. are driven on reasonable road surfaces within legal driving limits. are driven off-road in the reco~nmended manner. See "Off Road Driving With Your Four-wheel Drive Vehicle" in the Index. use the recommended unleaded fuel. See "Fuel" in the Index. 0 0 Selecting the Right Schedule The proper maintenance schedule foryour vehicle depends on which engine you have in your vehicle and how you use your vehicle. Gasoline engine vehicles and diesel engine vehicles have different maintenance requirements. If you have a diesel engine, follow a schedule designated for diesel engine vehicles only. If you have a gasoline engine, you must first determine whether your engine has a light duty or a heavy duty emissions classification. Follow a maintenance schedule designated for gasoline engines with the emissions classification (light duty or heavy duty) for your engine. See "Engine Identification" in the Index to find your engine's emission classification. 7-3