I recently developed a slow ticking noise when I am in 4lo and a faster same noise in 4hi (nothing in 2wd). You can only here it when the truck is really underload, but it is definitely noticable. I'm quite sure that it is coming fom the T-case, but other than that I have no ideas. Maybe a chipped gear? Opinions / advice. I'm heading on a long roadtrip soon and I would like to know that it is not a precurser to catastrophic failure.
Thanks,
Stephan

Thanks,
Stephan