Quote:
Originally Posted by padresag
proportioning valve proportions(regulates) the flow between the front and rears brakes on a gm setup. if you didn't have one at all your back brakes would be locking up first
ron
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Right - I have been adjusting the valve to diagnose this problem. From full shut, to wide open, and steps in-between. I can't get the front discs to effectively stop the truck regardless of how I have the valve set.