2001 Chevy what? Chevrolet made lots of different models in 2001. As you do not list what model you are referring to here is how to find out. Park the vehicle on a level surface, drain the oil, and change the filter. On a 4 cylinder & V6 Add 4.5 quarts of the correct weight oil and start the engine. On a V8 add 5 quarts. Run for 30 seconds and shut down. Wait 30 minutes and check the oil level. Add as necessary to reach the full mark. Do no overfill. You now know the capacity.
Should take 5 qts. with a new filter.
4.5
About five quarts should do it.
You only needd 5 quart for Chevy Tahoe 2001.
6 qts with filter
6QTS. with a new filter.
6 Qts of oil
According to the Chilton manual it takes 6 quarts.
It should hold 10 quarts.
most now take six with a filter
5 QTS. with new filter
it should hold 5 1/2 quarts