Hard full pedal with engine off, but when pressed while running goes all the way to floor with no resistance. New master cylinder and ABS.
Aug 28, 2018 at 6:45 PM
when pressed while running goes all the way to floor ?
2003 CHEVROLET BLAZER
MIKEJUSTIN
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This happens when the brake booster internal valve goes bad here are diagrams and instructions on how to change it out. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Aug 29, 2018 at 2:18 AM
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