Front brake heavy rubbing on 2007 Buick Lucerne

2007 Lucerne 16,500 miles. There is a heavy rubbing sound from front brakes even after dealer replaced with ceramic pads. Could this be an ABS problem? It is not a rotor problem.

Asked by for the 2007 Buick Lucerne
If this is only on the first stop or two of the day it may just be surface rust from sitting and is somewhat normal. Greg
Thanks for this answer, but it isnt rust in fact it gets worse the more the car is driven.