So my ABS light keeps going on and off. Sometimes when I let off the brake, the brake pedal "thumps" like it should when something is wrong with the ABS I assume. It happens more often when I turn and brake at the same time. I took it in to our family mechanic today and he couldn't pull any codes (the light went away, figures..) He says he thinks it may be the hydro-boost but isn't sure. He also said a power steering flush may help because it's all one unit? IDK...that's why I'm asking for help! Thank you!