Hello, I have an 02 Sierra 2500HD. Auto trans with the 6.0L. My transfer case started leaking at the output shaft seal. No prob, I thought. I went down to checker autopart and got a new seal. When I went to put it back in the transfer case, the seal is loose, its not sloppy loose, but I can shove it in by hand and I can also spin the seal while seated in the transfer case. I thought maybe they gave me the wrong seal so I took it back and got another. Same outcome with new one. So then I went to Napa, hoping they had something else. Turns out its the same brand, I bought it anyway, just in case. Same outcome. I cleaned the old one up and tried to shove it in by hand and you can tell that it would actually take a hammer to get it in, like its supposed to. Has anyone had this sort of problem?