is Brake proportioning Distribution Block adjustable?

1998 GMC JIMMY
141,000 MILES • 6 CYL • 4WD • AUTOMATIC
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BESTDADN
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How do you reset a distribution block?
Sep 9, 2009 at 6:35 PM
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JACOBANDNICKOLAS
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Are you refering to the proportioning valve? If so, there are no serviceable parts on it.
Oct 5, 2009 at 9:33 AM