1999 Chevy S-10 brake light

1999 CHEVROLET S-10
100,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
KLJHOUSE
  • MEMBER
  • 1 POST
brake light on, pedal sinks to floor, has little braking.
brake fluid level good ! no leaks at lines or all four wheels.
no fluid on inside brake pedal rod under dash.
breifly unplugged hose on booster and heard suction noise and plugged back in. I had replaced a front hub approx 500 miles earlier and everything appeared to be working just fine after that repair and than 500 miles later light comes and soft brake pedal and decreased braking.
Jul 16, 2008 at 9:52 PM
Advertisement
Avatar
MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
Hi there,

If you have bleed the system and you have a sinking pedal (with no fluid loss) you may have a faulty master cylinder, they can fail internally and by-pass fluid causing the soft pedal. Have this check out first.

Mark (mhpautos)
Jul 17, 2008 at 1:37 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.