Today I replaced the ECM on my Dakota with a used part. After installation my ABS light immediately began blinking, but no codes were returned from the OBD module. Thought maybe the used part was bad so I reinstalled original ECM. Same problem with the light. First, what's the secret to resetting the ABS light???? I've read on some forums of other vehicles that such a procedure exists. Second, do I need to reset the entire ECM so it goes through the learning process again? Truck seems to be running better than ever.