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Brake pedal almost to the floor

Tiny
RHOWERT13
  • MEMBER
  • 1996 GMC SIERRA
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Replaced master cylinder, brake booster, front calipers, new brake lines. Bled lines, and the whole system and the pedal still goes almost to the floor.
Sunday, November 12th, 2017 AT 1:51 PM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You do not state what you were trying to fix in the first place before changing all those parts, but on that vehicle once air is in the system it has to be electronically bled using a bidirectional scan tool.
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Sunday, November 12th, 2017 AT 6:10 PM
Tiny
RHOWERT13
  • MEMBER
  • 2 POSTS
Thank you for your response. I will have to see if I can buy one of those bidirectional scan tools. It is been this way for years.
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Monday, November 13th, 2017 AT 4:52 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Since the cost of the tool is in the vicinity of $10,000, I would suggest you just have it done by a professional shop.
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Monday, November 13th, 2017 AT 5:05 AM
Tiny
RHOWERT13
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  • 2 POSTS
Wow, okay. Thanks.
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Monday, November 13th, 2017 AT 5:28 AM

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