local GM dealer
talk to the parts manager, and ask for a copy of the warranty procedures from their manual. most of the counter guys will tell you crazy stuff like that, but GM requires them to warranty all their parts. cant recall, but i think they are refered to as "SEMA" parts. like crate motors and trannies.
they did not do any of the labor, but i did put in a new Xfer case from boyle? maybe
when i carried it back for the warranty replacement the service guy that handles your job called and said GM would cover the new tranny, but i would have to pay the labor, and i said WHAT ARE YOU TALKING ABOUT?
GET ME THE PARTS AND SERVICE MANAGERS OUT HERE NOW!!!!!!!!!
the parts manager came out and said sorry for the confusion but this guy was mistaken, and everything is covered.