You gotta take off the tire, brake caliper and the caliper bracket(2 screws in the back) . The Rotor should slide off because the caliper bracket and caliper hold the rotor in place. It might also be held on by some screws. The screws are easy to strip so I recommend using an impact gun. I think cavaliers don't have the screws on the rotors.How Do I change Brake rotors on Cavalier?
What they said, and buy some brake cleaning spray to clean the protective oil off the new rotors, or the pads will glaze and won't work. You can use your pads you just put on too, no problem.How Do I change Brake rotors on Cavalier?
This is a very easy task ! Go to advance and buy a HAYNES AUTO MANULE, it has step by step procedures. Take your time,be sure car is on jack stands and not a stock car jack ! Hope this helps ,, good luck !!