What is a key sign of a failing transmission mount?

A key sign of a failing transmission mount is excessive engine vibration and shifting issues. The transmission mount is responsible for securing the transmission to the vehicle's frame, helping to absorb vibrations and prevent unwanted movement. When the mount begins to fail, it can lead to misalignment of the transmission, which may cause the engine to vibrate more than usual. Additionally, this misalignment can result in difficulties when shifting gears, as the transmission may not engage properly. Observing excessive vibration and trouble with shifting indicates that the mount is likely compromised and should be inspected or replaced.