ABS activates on dry roads during gentle braking - pulsing brake pedal.
Brake pedal goes all the way to the floor, but can be pumped up - no loss of brake fluid.
ABS light comes on - very occasionally - maybe once a week. Resets to correct operation (Shows at engine start, than goes out) at next start up.
Car has been to two shops, including official Chevy Dealer, without a solution.