brake pedal goes to floor

2003 CHEVROLET TAHOE
104,654 MILES • 5.3L • V8 • 2WD • AUTOMATIC
Avatar
DENNISAUGUSTJR
  • MEMBER
  • 1 POST
On the vehicle listed above the brake pedal goes to the floor. I change out the rotor tried bleeding the brakes I wasn't getting no fluid anywhere. so I took the lines off the master cylinder and there's no fluid coming out master cylinder. what can cause that? Also it has a new master cylinder on it.
Feb 3, 2021 at 9:07 AM
Advertisement
Avatar
KASEKENNY
  • ✓ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
Did you bench bleed the master cylinder? If not, then you most likely are just pushing and pulling the air that is trapped in the chamber.

Here are some guides that will help with this:

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

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

More then likely you will have to replace the master cylinder again because if you didn't bench bleed it then it could have damaged the seals on the inside or it is possible that the master was faulty out of the box.

Either way, if you are getting no fluid out of the master then it is failed. Let me know if you have questions. Thanks
Mar 16, 2021 at 10:08 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.