so a 1998 buick lesabre 3.8 heat and air condision the dash controler is fine the resisor is new but blower stil works intermitently . shuts off and comes on will stay good for few days then out of blue wont blow but heat very lightly comes . anyhow with new resistor and good dash control will the internal electronics of the motor be he prob

Your blower motor is letting you know it'* on it'* way out. When it doesn't work try tapping it with something. If it starts working then it'* just worn out inside and need to be replaced.