2000 Pontiac Firebird Owner's Manual - Page 260

Before closing the hood, be sure all the filler caps are on. Then pull the hood down and close it firmly. Engine Oil If the LOW OIL light appears on the instrument panel, it means you need to check your engine oil level right away. For more information, see "Low Oil Light" in the Index. You should check your engine oil level regularly; this is an added reminder. The engine oil dipstick is the yellow loop near the back of the engine. Do not check the 5.7L V8 engine oil level after the engine has been sitting overnight. A higher than normal reading might be obtained. Check oil level with the oil warm. Turn off the engine and give the oil several minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level. 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. 6-12