Yes...motor mounts and trans mounts are fine. The vibration is sometimes noticeable at slower speeds 30-35 mph. I feel it just a little bit but most noticable to me in the vibration of my side view mirror. The worst is about 68mph and up from there, the faster I go the worse it gets. To me it feels like the whole truck skaking...visors flaapen away, nirrors shakin and teeth chattering although I do feel it and see it in the steering wheel. Very tough to determine what the cause is.
The driveshaft was balanced but did not solve problem. Have not been able to get the truck in the air (jack stands or hyd. lift) to run it at high speed and inspect it. Trans shop said they had 3 techs drive it and they all say it's in the tires! omg I'm thinking now I'm doomed. Anyway, I use my truck for work so I'm just driving it till I have more time....sucks
at 6am here on the highway, going with the flow of traffic is 75-80mph. I was told by a mechanic that it certainlty can be an out of balance torque converter but the details for diagosis were not there. In mentioning that to that Tranny shop they said it is rare these days to get a converter out of balance but if I went to a particular tire shop and they said it was not in the tires, he would replace the converter...no cost to me. I guess he just wants a second opinion before trying that option.