94 Chevy Silverado C1500 - Brake Issue, master cylinder replaced, brake booster replaced, Abs module proportioning valve and control unit pulled out of salvaged vehicle. Currently have the module disconnected from control unit but have all brake lines connected out of the factory. First press on the brake soft and goes pretty much to the floor then after that they work normally until you give them 5 to 10 seconds of non use, bleeding believed to be done properly with a vacuum bleeder system and fluid never got too low. Thinking about bypassing the valve and abs all together what is you opinion.
You probably still have air in the brake system. It may be necessary to use a Tech2 or equivalent to bleed the ABS system. Of course it's possible the used parts you installed are no better than what you removed, assuming those were even bad in the first place.
