I finally changed all the fluid in the brakes with new. My Haynes manual dosen't give any specifics about bleeding anti-lock brakes except bleeding the pressure from the power booster and doing the rest like usual. The problem was, I had a solid feeling pedal before I started the Blazer up but after it was running, the the brake light came on and I had to pump the pedal about 15 times to build pressure up and for the light to go off. The brakes work OK but the back still seems like they aren't working up to par. Any ideas?