Conflicting info.. AutoTracII or ATFIII transfer case fluid

[inkadink]

I want to check and change my transfer case fluid. I called the local GM dealership to ask what I need to use in my push button shift 4wd 1997 Tahoe. They said it looks like I need to use AutoTracII in the transfer case.

Here is where it gets interesting,,, in my owners manual ( I bought it on ebay) for 1997 Tahoes and Suburbans it says I need to use ATFIII fluid.

Also,, the parts guy said if I drain my fluid and it is red like ATFIII I could replace it with AutoTracII with no problems.

What do you all use or have in your transfer cases?? What do you think about this? Thanks again.

 

[3-lot]

if it push button 4x4 with no Auto 4wd option (so only 3 buttons, 2hi, 4hi, 4lo), then dexron 3 atf is fine to use (thats normal auto trans fluid). if it has the auto 4wd option then autotrac is a must.
and the other question, yes you can use auto track as substitue for atf (its pointless due to cost though), but not the other way around.
-3 lot