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Hey all first time post but it wont be my last.


I have a question I was looking to possibly get an answer for.


I own a 1992 GMC Sierra 2500 454 4x4; The transmission is slipping and im looking at purchasing a used one as its far to expensive to rebuild.


Anyways i live on an island and there are absolutely no 4L80E 4x4 transmissions. but there is a lot of TH400's, newer 4L80Es and of course 4L60Es. What would work with my truck? Or would none of these work?


I do know that my transmission is specific to 1991 - 1993.


Any help is appreciated, thanks in advance

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