2nd gear vibration

[matt4282]

I replaced my transmission mount the other day. Drives and shifts a lot better now. But now I’m getting a lot of vibration in second gear vibrates my whole Jeep. Any suggestions?
Thanks

 

[CharlesHS]

I would check the rear driveshaft yoke U joint.... Then new transmission mount may have changed the operating angles just enough to cause an old U joint to vibrate due to wear.

 

[matt4282]

I would check the rear driveshaft yoke U joint.... Then new transmission mount may have changed the operating angles just enough to cause an old U joint to vibrate due to wear.

I don’t see any play in my U joint.