your brake light switch is on the brake pad
but if your master cylinder went up thats why you don't have brake pressure
what happen when you bled the brakes the 2nd time?
was there pressure in the line when you bled them?
k just got done.. bled the brakes.. 1st time around..very little fluid came out.. second time.. a gush of fluid came out.. but i have no pressure in the master cylinder tank.. no fluid comes out of that when the brakes are pressed... the only time the truck will stop is when the pedal is all the way to the floor.. then it will finally stop.. so im thinking that it's the master cylinder