You need to rebleed the brakes. I do it by myself because I ain't got nobody to help me. I just figure out how to do things myself.
Start from the closest wheel and work to the farthest. Take the top off the master cyl reservoir and fill to the top. Loosen the left front wheel bleed screw and attach a hose to the bleed screw nipple. Put the other end of that hose into a small jar of brake fluid, sitting on the ground. Get back into the truck and push down on the brake peddle slowly a few times then leave the peddle to the floor. Wedge a precut piece of 2x4 between the seat and the brake peddle, holding it down to the floor. Tighten the bleed screw at that wheel. Repeat this process for all four wheels then, repeat the process again. This works! I have done it several times. My brakes are working perfectly.
