I have a 1996 chevy blazer 4x4 and when i brake i hear a clacking noise in the front end ive been hearing it for 2 months now and i replaced the idler arm and pitman arm but that didnt do anything someone please help or tell me what i have to do to make it go away

 

I had a clacking up front when braking ; also a bad bearing sound when going forward. Once bearing was replaced, the clacking stopped. I surmised that the wheel was not runningtrue and when the brakes were applied, it straightened out. just a thought