Is early transfer case replacement a sign of an overworked engine?

[Toonces]

I'm about to look at this '02 Sierra with 141k miles for potential purchase and the guy is having to wait on its transfer case to be replaced before showing it. I've seen a lot of trucks advertised, but not too many mentioning T case work being done at this early mileage.

Does T case replacement at 141k miles indicate the truck's been overworked with pulling heavy trailer loads? What signs of overuse should I look for on this upcoming inspection, keeping this T case replacement in mind?

 

[TheDo114]

It could also be from improper use like using it on dry grippy terrain all the time while making sharp turns or making the truck slide in snow or ice and suddenly you get traction.

 

[Dusdaddy]

Endless reasons why it crapped out but usually not from towing. TheDo114, posts a good reason for sure.

Me? I'd be more suspicious of those miles being right considering the age and the transfer going bad. The rest of it better be in the shape of 141K mile truck.