I have a 2000 blazer 4x4 and I replaced the front right hub today. When I got it all put back together and hopped in the car the brake pedal was spongy an goes all the way to the floor. I took back off the tire and inspected my work and everything is put back on correctly. I don't know why I have spongy brakes, usually that's because of air in the lines or a failed master cylinder right? I don't understand why my brakes worked fine before I took it apart and why they are not working now. Does anyone have any idea what's going on here?

 

Just bleed it out, it only takes 5 min with 2 people

 

Did you start the truck a pump the breaks after you finished. Try that an see if that brings it back.