问：加速时和汽车在齿轮时发出滴答声

你好。我的车辆已经走了65,000英里。它具有自动变速箱。当我给气体加速时，问题出现在加速期间。然后，有这种滴答声。但是，当汽车处于中性状态或将窗户向下奔跑时，没有声音。但是，当我换档并慢慢加速并且窗户向上时，滴答声很容易引起人们的注意。随着RPM的上升，声音将消失。当发动机承受负载和换档时，可以再次听到滴答声。我以约55,000英里的速度更换了油。 The car idles well. There are no error codes. It has good gas mileage. At the dealership, they didn't find the cause of this ticking sound. I would like to know what the problem is and if it's serious. Do you have any suggestion?