How do you change a Flywheel on a 1999 Chevy Cavalier?

The flywheel typically isn't a service item. If for some reason you did actually have to replace it you would have to do so by dropping the transmission, and all associated bracing, and then removing the bolts securing it to crank. Normally these bolts are secured by triple digit torque figures, so an impact gun is necessary. Removing and installing the flywheel is straight forward, the real issue is actually getting to it.