Smart trac fluid

I have a 2000 smattrac bravada which is an all wheel drive, what type of transfer case fluid do i use?

I have a 2000 smattrac bravada which is an all wheel drive, what type of transfer case fluid do i use?

The blue Gm auto trac transfer case fluid from GM parts dealer.

What mileage?
Ever been serviced?

Here is what rockland gear says.
http://www.rsgear.com/articles/articles/2000_08.pdf