Brake pedal to the floor

Tiny
OWENCHINADLE
  • MEMBER
  • 1992 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Just replaced brake calipers and brake pads, when doing so I let the brake lines completely drain on accident overnight while my newly painted calipers were drying, put them on, bled the brakes, bled the master cylinder, and pedal still goes to floor. Replaced the master cylinder and even got a second one just in case I got a faulty one, still the same result. No leaks in any brake lines and I’m at a loss of what it could be.
Monday, November 22nd, 2021 AT 8:08 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,187 POSTS
Hi,

I suspect the vehicle has ABS and the electro-hydraulic control unit needs to be bled. This is to be done if there is a possibility that air got in it. Note, it should be done prior to bleeding the brakes, otherwise, you won't have a brake pedal.

If you look below, I attached the directions for the procedure. Give this a try and let me know if it helps.

Take care,

Joe

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Monday, November 22nd, 2021 AT 9:19 PM

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