Brakes and calipers
I have been working on a GMC Sierra for two days now. I replaced rotors and pads and calipers. I bled the front brakes only the first day. The pedal still goes to the floor. The second day I did all four. But I had to use the brake lines to bleed it not the bleeder screws. Pedal still goes to the floor. Any ideas on what it is or what would help would be much appreciated!!!