GM: No Dexron VI ATF in Transfer Case

[Luv2Camp]

SO now I am really confused. Went to my local Hummer dealer today to purchase the manual gear oil listed in the tsb for my 06 H2 and was told by both the parts and service areas that they are using DEX6 in the transfer case as the DEX3 is no longer made. When I told them that GM was advising to use the manual gear oil the parts manager went in the back and came back a few min later and told me he called GM and they said that they confirmed I should use the DEX6 in the transfer case.

Not sure what I should do now!