Have been having issues with front brakes dragging on my 99 s10 blazer, well replaced both lines, calipers movement fine after doing the work now all 4 wheels drag could it be the master cylinder HELP.

 

After replacing 2 front brake lines I still have a dragging problem, but now its all 4 wheels , could this be the master cylinder ?

 

Open up a bleeder and see if it changes how easily the wheel rotates.

 

Yes I have tried this, but it does not release.

 

Then the problem is either a stuck caliper piston, or binding hardware, (guide pins etc).

 

after fixing the front lines, cleaned pins etc.., now the rear and front are dragging

 

could it be the master cylinder ?

 

Opening the bleeder takes the master cylinder and lines out of the equation. A stuck piston or binding hardware are the only possibilities.

 

although the rear was not dragging as much as the front , I called a master mechanic I know ,told him the problem ,1st answer was front rubber hoses ,told him I replaced them ,his answer was master cylinder , Got a new unit bleared it and install dragging brakes fixed.