I have a 2000 Bonneville that when driving over 45 and braking the ABS pulses until the speed drops to 45 then stops. The problem started right after I had a tire go flat and replaced. The tire pressure light came on when the new tire was installed. I reset the warning light and it has not come back on. Shortly after the ABS pulsing started. I replaced the rotors pads and calipers on the front but the problem is still there.