Is up and down play from driveshaft where it connects to the transfer case normal?

[Cristian Sotelo]

I’m getting a major pulsing vibration from the front end of my 02 Silverado only when I am decelerating at highway speeds and sometimes when I’m about to stop (if the vibration is bad that day). The vibration is 97% gone when I disconnect my front drive shaft. This has been going on for around 6 months. Can someone help me diagnose my problem please? I’ve replaced brake pads and rotors, cv axles, inner and outer tie rods, shocks, upper and lower control arms, wheel bearings. I’m pretty sure the vibrations gets worse with the AC on… I posted what I think is the problem https://youtube.com/shorts/wXhm1Aoczxg?feature=share

Edited August 24, 2021 by Cristian Sotelo