Transfer case lube 2003 Suburban

[Brian W. Littleton]

Just changed all my lubricants in my 2003 Suburban with the exception of the transfer case.
The GM oil has no cross over from AMSOIL and when I asked them they said don't change it until they can identify it and come up with a replacement.
Anyone know what the lube is and why the problem?
Sub is 8.1 3/4ton HD trans.
Also to change tran filter requires dropping the drive shaft??? Not the same as my 2000 Yukon XL.

[DmaxMaverick]

If your 'burb has Autotrac, you MUST use Autotrac II fluid. There is no substitution. As far as I know, the only place to get it is at the dealer, for now. All others use Dexron III ATF.

Autotrac is not the same as the "push button" 4 X 4. If you have Autotrac, you will have an "auto" button on the dash. The "push button" versions have 2 hi, 4 hi, and 4 lo only. No Auto button. Check your equipment options paper if you are not sure.