Handbrake and brake pedal, how are they different, apart from the fact that the handbrake can be locked and the pedal can't? Which wheel do they brake? - Quora
Why does my brake pedal go to the floor when the engine is running but - 2000-2006 GMC Yukon - iFixit
![Brake Pedal Goes To The Floor When The Engine Is Running...Solved! Here's What Worked For Me - YouTube Brake Pedal Goes To The Floor When The Engine Is Running...Solved! Here's What Worked For Me - YouTube](https://i.ytimg.com/vi/tYYMoZGEzCc/maxresdefault.jpg)