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Transfer case fluid

Taswe

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Taswe New Member

Taswe

Posted
Posted

I have a 99 Tahoe with the autotrac 4WD. How often are you supposed to change the fluid in the transfer case and what fluid do you use?

WEFs99 Enthusiast

WEFs99

Posted
Posted

Unless you run it extremely hard, I wouldn't change it any sooner than the factory recommends. Definitely use the new blue stuff. I believe it is synthetic and it made a world of difference in my '99.

MarkD Senior Enthusiast

MarkD

Posted
Posted

It depends on your mileage. I would change it after the first 15k, then at 50k, then at 100k. Not a regular interval, but I think there is much to gain from doing the first change early.

 

GM Blue vote as well.

99silveradoz71 Senior Enthusiast

99silveradoz71

Posted
Posted

Did the first change on my 99 at 36k or so last fall. I went with the new blue fluid, which is supposed to assist in quieting the driveline clunk.

Jersey Tahoe LT Enthusiast

Jersey Tahoe LT

Posted
Posted

Not sure of the part # but yes the name is Autotrack II. The Dealer will know what you need. Tell them the blue stuff. I changed mine right after I bought it. It turned out it was never changed in 65k miles. Yowsa that is scarry. I will brobably change it ever year since I have over sized tires and I can't afford to change Gears. Will change the whole Drive line fluids yearly.

 

Later,

Brandon

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