I have a 98 Astro Cargo that clicks behind the drivers seat when the brakes are applied. The clicking starts at around 35 mph and stops around 20 mph. As more pressure is applied to the brake peddle the clicking gets louder. I have replaced the rear brake shoes and the problem still occurs. The clicking sounds mechanical but could it be the BPMV or the EBCM since these are located just below the drivers side door? Would one of these make a clicking noise when they are going bad?

Thanks

Cory