Same problem, today had close call on the way to autozone. I bought and installed a master cyl. Same problem only when the truck is off I have pressure. b4 I had none even with the truck off. Now I have pressure when the truck is off after I pump it up. I went back to AZ and they said it was my slave cyl. so I bought one of those. I have an slipomatic still till wed. where I begin the swap to 5speed. this is my daily driver so I have to take it to work everyday. I really need to figure out whats up. I bleed the whole truck after the master cyl install. very little air in the lines prolly from the master install. Is there a slave cyl on my truck for the brakes? and if so where is it?
