Weird Vibration/ Shake when coming to a stop

Few days ago I started noticing this issue when coming to a stop. It doesn't always happen, but it feels like I'm getting wheel hop when I come to a stop from the rear. Kinda hard to explain. It's not very violent, just a minor shake/hop feeling.

I do have a lift on the truck, the rear consisting of Wheelers progressive AAL and a 1.5" block and the long bilstein's, but those have been on for at least 10k.

I know it's not warped rotors as it's coming from the back for sure. I went ahead and checked all nuts and bolts I R&I'd when I did the lift and they all are tight. I never did a CB drop, maybe after it's been this long it has something to do with that?

Any help would be appreciated so I don't have to take it to the dealer under warranty(don't like being without my truck).

Truck has almost 45k on it.

 

Check the U Bolts on your rear leafs just to be sure. Recently read a post where this was the culprit for someone.


Edit: Found the post;
https://www.tacomaworld.com/threads/do-i-have-a-brake-issue.394446/#post-10895290

 

Hmm, I cranked on those with my half inch snap on impact. Ill get a torque wrench on em and see. Thanks!

 

Remove the blocks and either add extra leafs to get it to that proper height or don't run it at all. Those things cause a plethora of problems including early leaf spring failure, wheel hop (due to tired leaf springs), axle wrap, and in severe cases can cause leaf springs to break.