2000 Other Chevrolet Models brakes mushy and brake light on

2000 CHEVROLET
15,400 MILES • V8 • 2WD • AUTOMATIC
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KMM838
  • MEMBER
  • 1 POST
This is a 3500 service body I pulled up to a job everything was fine. 2 hrs pass and I go to leave. the brake pedel goes to the floor and the brake light goes on. I stop at the autoparts store and fill brake fluid ( about 1/2" low). No difference, no fluid leak. Is this something to do with the master cylinder. I am pretty good with repairs but I dont know where to start.
Sep 24, 2009 at 6:45 PM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
Bingo master cylinder if no leaks at wheels then internal piston seals in master gone.
Sep 25, 2009 at 2:06 PM
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