Help with my suburban please

[Rattler]

Hi there Jake, I own a 1995 lifted suburban as well. I haven't had that particular problem, but I do know these trucks inside out now.

There are a couple things you can do to try and isolate the problem. First off, when you had the front of the truck jacked up and spun that hub did the other side turn the opposite direction or was it stationary? In two wheel drive each wheel should spin freely without effecting the other. On the passenger side of the front differential is an electric actuator that slides a collar over the inner and outer shaft to engage the right wheel.

I can't see what's spinning and what's stationary in the video. If your drive shaft is not turning and your other wheel is turning in the opposite direction then the coupler is engaged when it shouldn't be or it's stuck. The noise could either be from a stripped collar on the coupler or something in the front spider gears.