Looking for input on the cause of an unusual problem with my ABS brakes: I'm getting a brief activation (rumbling/pedal vibration) of the system on the first one or two applications of the brakes after starting off. This happens just before the car comes to a complete stop at less than 5 mph wehn I'm backing out of the driveway in the morning. It may also do it at the end of my street where I have to come to a stop. This usually only occurs after the first start-up of the day, or if the car has been sitting for several hours. After things get warmed up or I drive a mile or so, the problem disappears. The brake pads are new, calipers don't seem to be hanging up. Nothing else obvious, but the system seems to be sensing an imbalance.
Thanks!