Brake pedal travels to the floor?

Hi,

When the pedal goes to the floor, the first thing I suspect is the master cylinder, but you have replaced it already. Did this happen prior to replacement? This guide can help us fix it

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

I will also need to know if this vehicle has a traditional vacuum assist power brake booster or does it have the hydroboost system. Additionally, how was the system bleed and what conditions still exist with the ABS module and the front brake calipers?

Let me know.
Joe