The master cylinder has been changed and the breaks still go to the floor after bleeding

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your Rendezvous. If the brakes still go to the floor after replacing the master cylinder and bleeding the system, you may have seized brake components or a failing ABS actuator. Inspect all four calipers for seized slide pins or pistons and ensure no leaks. If this is the case, you may have an internal leak in the ABS actuator. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!