try to check if the button has power. what i did was pull the button out, with a volt meter , the ignition on .see if their is any power . only one side will have power until you press the button once you press the button the other side should have power if not most likely the button is bad . if the button has power find the same color wire on the trunk motor check it with the volt meter while some one hits the button. if that wire has power make sure the mounting bolts that connect the motor to the trunk are not rusted, that where its grounds out . if that's all good most likely the motor is bad it happens.