2001 GMC Safari Owner's Manual - Page 263

Before closing the hood, be sure all the filler caps are on properly. Then lift the hood to relieve pressure on the hood prop. Remove the hood prop from the slot in the hood and return the prop to its retainer. Engine Oil Checking Engine Oil It's a good idea to check your engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. Then just pull the hood down and close it firmly. The engine oil dipstick has a yellow ring and is located near the center of the engine compartment. See "Engine Compartment Overview" in the Index for more information on location. 6-11