Brake pedal almost to the floor

1996 GMC SIERRA
200,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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RHOWERT13
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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.
Nov 12, 2017 at 1:51 PM
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WRENCHTECH
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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.
Nov 12, 2017 at 6:10 PM
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RHOWERT13
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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.
Nov 13, 2017 at 4:52 AM
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WRENCHTECH
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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.
Nov 13, 2017 at 5:05 AM
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RHOWERT13
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Wow, okay. thanks.
Nov 13, 2017 at 5:28 AM