Not that I have noticed. I tried moving the your every which way with the driveshaft still installed. As a side note I did replace my pinion seal many months ago but was very careful with the torque of that nut. Maybe the nut came loose though? I'll have to check maybe tomorrow after work or Friday. Does that seem like too much play?

 

A hopeful update. I kept crawling around under the truck and randomly decided to check the bottom most trans mount bolts. Both were completely loose. Tightened them up and I can't replicate the noise anymore. Almost seems like too easy of a fix for this truck so we will have to see.

 

Sounds great. Hope that's all it was. I had an issue with my front differential leaking a slight amount of gear oil and fixed it by tightening the cover bolts. Those simple fixes really feel good on the mind and the wallet!

 

Loose trans mount WILL make some interesting noises.