1999 GMC Jimmy Brake pedal goes to the floor

1999 GMC JIMMY
80,000 MILES • 6 CYL • 4WD • AUTOMATIC
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99JIMMYNEEDHELP
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  • 2 POSTS
Replaced back calipers, when I was bleeding them the pedal went from firming up to going to the floor. Now there is no brake fluid even going to the back calipers. Front brakes are fine. Do you think the master cylinder needs to be replaced? Have already tried gravity bleed, there's still no fluid going to the back calipers, I also haven't noticed a leak. Needing Brakes!
Jun 7, 2010 at 2:52 PM
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BLACKOP555
  • ✓ASE Certified Mechanic
  • 10,386 POSTS
  • ASE Certified Mechanic
did you let the brake fluid get to low? make sure all bleeders are closed. then crack them all and just let vehicle set and gravity bleed. that should get the fluid flowing again
Jun 7, 2010 at 11:57 PM
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