Gmc safari rear end howling?

I would start by checking for leaks then the rear end fluid level, if no leaks and the fluid level is ok next check the u-joints, if it howls there is a problem brewing and I would not run it long howling if its just fluid and not run much filling it up should stop the noise.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.