Might need lub on the driveshaft yoke
No. It's already been lubed. That's not going to cause the issueMight need lub on the driveshaft yoke
The pinion seal is definitely leaking like a civv. But there's no rear end noise while driving. I did move the driveshaft by hand while I had it in the air and it didn't seem bad just normal movement. I'm sure it's a little low on gear oil. Cover is dry, just the pinion seal leakingSlop in the rear end gears would do it. Block the wheels, put the truck in neutral, and twist the driveshaft by hand. I would bet it moves a considerable distance within the rear end.