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1999 GMC Jimmy Brake pedal goes to the floor

Tiny
99JIMMYNEEDHELP
  • MEMBER
  • 1999 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
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!
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Monday, June 7th, 2010 AT 2:52 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
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
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Monday, June 7th, 2010 AT 11:57 PM

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