Vehicle Shudder problems of the 2012 Ford Mustang

The getrag mt-82 manual transmission in my Mustang has had a history of shifts that take extra effort, clunky shift engagement, and a high pitched whining noise from the drivetrain under throttle application, since I bought the vehicle used 5 years ago. I have had it looked at at a Ford dealer, but they say noting is wrong. The whine is present every time I drive, the other issues are intermittent. In the most odd incident that I had in the vehicle, I was in 2nd gear under throttle and the car began to shake wildly back and forth, with a loud clunking noise coming from the transmission. I'm not sure exactly on the date, a few years ago for sure. I have tried to replicate the effect, and it has happened a few other times in a less dramatic manner, but never quite like that. I am concerned that the transmission will not last the life of the vehicle, and feel it is not very safe. I know that I am not the only person who has had problems with this transmission. Thank you for the investigation.

The contact owns a 2012 Ford Mustang. The contact stated that while driving 50 mph and attempting to shift gears, the vehicle grinded while shifting. The vehicle was taken to the dealer for diagnosis but they were unable to duplicate the problem. The vehicle was not repaired and the manufacturer was notified, but the problem persisted. The approximate failure mileage was 7,000.

My gt was shifting perfect for 2000 mile. One day I went to afm and everyone saids my transmission is pos and will fail. What do you know. Just 2 days later I almost run over my neighbor john m because I was not able to get into gear. I have 2 other frens with 2011 gts, cbatty and 06gtfan. They have to cry themself to bed at night because their car grinds and whines. Ford is not doing anything to help them. Sigh. . . . . . .