I know I have read through a hundred posts on this same issue, with no luck of finding the fix. After starting my truck, and pulling away at a low speed, it jerks like something is grabbing, then stops and as I accelerate, the light comes on. When slowing down, I can feel the brake pedal "grind" like they are anti-locking. We took it the dealer and they said it was the Brake pressure modulator switch. So we replaced that and it is still doing the same thing, only now the brake pedal felt really stiff, almost as if I couldn't push it at all, after pulling out at a low speed. I was just wondering if anyone found a fix?? Any help would be greatly appreciated