Heavy shake when slowing down from high speeds

Hi everyone! I’m new here and have a question. I have a 2011 Toyota tundra crew max 2wd. I replaced my carrier bearing a few months ago and the shaking went away and now it’s back again… does anyone have an idea of why this will happen? this will be the third carrier bearing I’ve put on my truck. Thank you

 

brake rotors are the usual culprit

 

If you shake when you brake its probably your brake rotors that are the issue. They are possibly warped. If you shake when decelerating by just taking your foot off the gas and it shakes then it cant be the brakes. If you have replaced multiple carrier bearings that they seem to be the issue then you should consider doing a carrier bearing drop kit install. Its super easy, you just put a metal spacer in between the carrier bearing bracket and frame. Took my like 5 mins at most. Coach builder sells a great one.

https://shop-coachbuilder.myshopify.com/products/coachbuilder-carrier-bearing-drop-kit-rear-lift-0-2

This will most likely not fix your issue if your carrier bearing is already shot, but it will lower the angle on the driveshaft joint making it last longer since its under less mechanical stress due to high angularity.

But shaking can come from many other things such as:
Unbalanced tires
Bad ball joints
Steering rack issues
Bad tie rods
Bad shocks/springs