Brake pedal travels to the floor and hear a hissing sound when I press the pedal

Tiny
MARIO TRIDENTE
  • MEMBER
  • 1996 CHEVROLET TAHOE
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
Brake pedal travels to the floor after changing master cylinder, ABS module and both front calibers condition still exists still.
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Tuesday, September 15th, 2020 AT 10:37 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
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?

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
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Tuesday, September 15th, 2020 AT 5:49 PM

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