How do you replace the brake calipers and how do you remove the clamp on the hose connected to the caliper on a 2000 Chevrolet Malibu?

Your car probably has antilock brakes w/ traction control. It would be very wise to let professionals repair your brakes. This is a very complex system, and you are going to end up getting yourself in trouble. If you still want to strike out on your own, buy a repair manual for your car, or go and read about it at the Public Library.