When applying my brakes while slowing down from freeway speeds, I feel a pulsating sensation which seem to come from the rear drum brakes. Once my speed go below 40 MPH, the pulsation disappears. I don't have this problem when stopping from below 40 MPH. The rear brakes don't lock up when I apply brakes at any speed. But it could be that the pulsation while breaking down from high speed is normal.
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