Brake pedal goes almost all of the way to the floor. Very little brake pressure.
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Vehicle is four wheel drive with hydroboost brake system. ABS module, brake pressure proportioning valve, master cylinder, calipers, and brake pads have been replaced.
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Clamp shut the rubber flex brake hoses and try pedal .. IF high hard pedal now, air in brake system! .. Bulletproof 'old school' test - 'IF' it's done right! .. Good luck.
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