Brake pedal goes to the floor

2003 GMC SIERRA
71,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BOBWENDRY1
  • MEMBER
  • 1 POST
Bake pedal goes to the floor, no fluid leaks.
Aug 24, 2018 at 11:01 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good afternoon.

Any recent work done? Master cylinder is a common issue for no brake pedal. Check the fluid level.If you have ABS, there may be air in the system. I would suspect there is air in the lines. These guides can help you fix it.

https://youtu.be/w7gUsj2us0U

and

https://youtu.be/WDxvEQrMkBg

and

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

Please run down these guides and report back.
Apr 14, 2021 at 1:35 PM
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