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This can be caused by a number of things checked the connectors at the ABS unit and at the transmission make sure they are clean and all tight with no damaged conductors or terminals Then clear these trouble codes and test drive the vehicle tell me which trouble code occurs first this could be a problem with the solenoid in the transmission or it could be a problem with the front brake solenoid
I'll go monday to the dealer. If they do a n y from your advise , I'll accept it. I'll tell them about MODULATOR unit replacement and connectors at ABC unit