2002 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 381

Your vehicle may have a cap with text and a graphic, or just a graphic as shown. What Kind of Engine Oil to Use Oils recommended for your vehicle can be identified by looking for the starburst symbol. This symbol indicates that the oil has been certified by the American Petroleum Institute (API). Do not use any oil which does not carry this starburst symbol. The engine oil fill cap for the VORTEC 4800, 5300 and 6000 V8 engines is located on the engine valve cover on the passenger's side of the vehicle. On the 8100 engine, the oil fill cap is located on the front of the engine. See "Engine Compartment Overview" in the Index for more information on location. Be sure to fill it enough to put the level somewhere in the proper operating range. Push the dipstick all the way back in when you're through. If you change your own oil, be sure you use oil that has the starburst symbol on the front of the oil container. If you have your oil changed for you, be sure the oil put into your engine is American Petroleum Institute certified for gasoline engines. You should also use the proper viscosity oil for your vehicle, as shown in the following chart: 6-16