How do you change the serpentine belt on a 2001 Oldsmobile Aurora?

To change the serpentine belt on a 2001 Oldsmobile Aurora, first, ensure the engine is off and cool. Locate the belt routing diagram, usually found on a sticker under the hood, to understand the belt path. Use a wrench or ratchet to relieve tension on the tensioner pulley, then slip the old belt off the pulleys. Finally, install the new belt by following the routing diagram and ensure it is properly seated on all pulleys before releasing the tensioner.