1. Park the car on a level surface and apply the parking brake.
2. Loosen the lug nuts on the rear wheels, but do not remove them completely.
3. Raise the rear of the car using a floor jack and jack stands. Make sure that the car is securely supported before proceeding.
4. Remove the lug nuts and take off the rear wheels.
5. Locate the two brake caliper bolts on the back of the caliper. Use a ratchet and socket to loosen the bolts and remove them.
6. Pull the caliper off of the rotor.
7. Use a pry bar to pry the rotor off of the hub. Be careful not to damage the hub or rotor.
8. Clean the hub and rotor with a wire brush and brake cleaner.
9. Install the new rotor on the hub. Make sure that the rotor is seated properly.
10. Reinstall the caliper and brake caliper bolts. Tighten the bolts securely.
11. Reinstall the rear wheels and lug nuts. Tighten the lug nuts in a star pattern until they are snug.
12. Lower the car and remove the jack stands.
13. Test the brakes by pressing the brake pedal. The pedal should feel firm and there should be no pulsations or vibrations.