One more question concerning the tail shaft bushing in the C6 trans. One mechanic that was trying to locate the vibration told me it was the tail shaft bushing. This was based on the following : he grabbed the driveshaft just aft of the tail shaft housing and was able to move the tail shaft up and down app. 1/8" to a 1/4 " . He said that was the problem, worn tail shaft bushing. I had the car at an old school transmission shop. The owner did the same thing and stated, "no problem here, normal movement" Said it has to have some play in it or it would wear out prematurely. After looking at varius sources it seems like there should be no play, that is what the u-joints are for. Who is right ? Thanks
Steve