Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 90 Chevy Truck Brake Pedal sinks after stop.
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Old 07-20-2011, 07:53 AM
pemdj pemdj is offline
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The ABS Hydraulic Unit ( Isolation/Dump Valve ) was stuck in the bypass position causing a constant internal leak. I replaced the ABS Hydraulic unit , bled the brakes and now they work perfect. I was told that this is a common problem for these trucks.
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