Driveshaft vibration 2019 tacoma sr

I know there are threads but I'm wanting some exact help please. I have a 2019 tacoma with a 3 inch lift. I've been chasing mild vibration for a while. Yes I have the EGGS bushing already. The last time I took it in the shop looked at it and took out my rear driveshaft and said no vibration they added a 2.5 degree shim and it helped but I still have some deceleration vibes T around 25 mph and 10 to 12 mph? What next? 1 piece driveshaft?

 

How are your tires wearing? And what kind of tires?

 

They are pretty much new but wearing evenly

 

Have you had them rebalanced since this all started?

There’s a bunch of things that can cause a vibration.

What exactly do you mean this vibration happens on deceleration? Like when your pressing in the brakes it starts to vibrate?

most of the when I have seen a drive line vibration it’s in movement between speeds, whether accelerating/slowing/coasting it’s there

 

Yes when I am breaking coming to a slow stop there is a mild vibration from like 25 mph down to 20. It's not there on acceleration though

 

If it’s not there when your foot is on the gas or when your coasting check your brakes

 

Can also try to bump it to 3* shims, but it’s really weird that it’s not happening under load.

 

Alright thanks. Its been aggravating to try to fix.

 

It’s just the life of the beast when you lift a truck. Just gotta go through and test stuff till you figure out the cause and then move to the fix.

 

Try test driving a stock truck off the lot before you throw anymore time or money at this- decel shudder around those speeds is common, mine has a slight, but repeatable, and the others ones I've driven had the same.