Abnormal vibration

Hi, and thanks for their comments in the other post. My car is a 08 Mazda5, automatic. The symptom is that between 20-40 mph, the car makes an abnormal shake on front, but when accelerator is released the shake goes off. It is possible that the transmission are going to kaput? Right know don't have any lights on at the dash, but the TCM was replaced about 2 yrs ago. Any suggestions? Thanks. Ruben.


2012 Mazda 5
How are your CV axles? If the boots have dropped their grease the joints could be going. Yes, they still spin when they aren’t under power, but I’ve previously had failing axles on another car where they only made noise when under the stress of the Engine driving them.