ABS Light comes on

This is going to require a diagnosis to determine what is going on with the ABS system. I suggest you take it to a shop to have them look at this to see what is wrong. Look here for an idea of what they will charge (select ABS Diagnosis): https://repairpal.com/estimator/cadillac/deville Find a shop here: https://repairpal.com/cadillac-repair-in-plano-texas