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Transfer Case Oil

transfer case

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#1 Denai07

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Posted 13 April 2012 - 07:31 AM

Hi, 
It is time to change my transfer case oil on my Yukon Denali 2007 and I have a critical question which I hope you can help me out before I do something wrong and damage my vehicle.

The owners manual says I shoul use the following:
(Manual transmission Fluid GM Part No. 88861800.

However, my dad's 2009 Yukon Denali manual as well as my friend's 2012 says they should use DEXRON-VI Automic Transmission Fluid! 

My question is, as far as I know there has been no changes in Yukon Denali from 07 to 2012. Therefore, this made me feel a little bit skeptical about my 07 manual. So, for my Transfer Case, should I use DEXRON- VI or GM Part No. U.S. 88861800?
Please help me out!
VIN # 1GKFK63827J379231


#2 txab

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Posted 13 April 2012 - 08:21 AM

IIRC two different transfer cases were offered in 2007 GMT900. One could use transmission fluid the other not. 2009 units used Dex VI in all TC. A quick call to a dealer, with your VIN will get a answer. Maybe MSDALE will notice this thread

Edited by txab, 13 April 2012 - 09:53 AM.

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#3 elcamino

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Posted 13 April 2012 - 10:30 AM

manual transmission fluid part number 88861800. Turns out that part number is basically Dexron III.

This information applies to 2007 and prior GM passenger cars and trucks.

Dexron III is being phased out as a product name. It is being renamed Manual Transmission Fluid and carries p/n 88861800 U.S. (88861801 Canada).

If fluid p/n 88861800 U.S. (88861801 Canada) is not yet available when servicing a manual transmission or transfer case, Dexron III can be used in its place.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
Unavailability of manual transmission fluid part number 88861800 U.S. (88861801 Canada).

Recommendation/Instructions:
If fluid part number 88861800 U.S. (88861801 Canada) is unavailable when servicing a manual transmission or transfer case, Dexron III can be used in it's place. DO NOT use Dexron VI in place of the manual transmission fluid in any manual transmissions or transfer cases as a failure may result.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.


Edited by elcamino, 13 April 2012 - 10:38 AM.

Mike





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