[Riche]

My 97 Z71 has a clunk. I bought it with 123K so I am sure it has been doing it for some time…. I think that I have read that it is normal. I imagine that means if it isn’t extremely loud. I noticed riding in a friends 2004 Z71 that his was doing the same between 2&3. It was quieter than mine but I could still hear it.
Did some one post that there is a special transfer case fluid that helps with this?