Vibration right off idle

512Stroker said
Im back
The driveshaft and yokes do not know or care if you are in or out of overdrive.
If your road speed remains the same and the vibration changes or goes away when the trans shifts into overdrive IMO you likely have an internal trans or engine issue causing the vibration.

Well the speed does change. The OD kicks in about 45. The speed where the vibration is felt is cruising at about 35.

I'm going to turn off the OD and manually run it in each gear for further diag. One thing is for sure, raising the trans up made a SIGNIFICANT difference.