Got a 2000 blazer 4x4 just replaced master cylinder to fix a rear brake problem now have front brake issue.....when driving feels like brakes are on but nothing smoking or dragging......notice when I let off the gas it makes a humming noise till I give gas......speed sensors??????

 

No ABS lights either

 

When is the last time you replaced your front brakes? I replaced my front calipers and pads all around, and when I left my mechanic's (aka my brother's house) I got about 2 houses down and tapped the brakes and my rear brakes locked up. The rear calipers were warped and the pistons were stuck out and wouldn't go back in. Could this possibly be happening with yours?

 

Just replaced everything in the rear....lines pads calipers rotors .......didtnt have an issue with the front till I did the back........replaced front pads bout 6 months ago that's not to say calipers ain't bad guess ill replace everything on the front and go from there

 

Did you ever figure it out?

 

Yeah changed the bpmv and ecbm....
both parts of the abs and have had no problems