I have an 06' H3 with an automatic transmission. I want to change my transfer case fluid and it says to use dexronIII with the H specification. I've been told they don't make dexron III anymore. So I bought Castrol dexron VI synthetic automatic transmission fluid instead because it says on the label that it replaces dexron III with the H specification. Is this fluid ok to use???? If not what should I get?

Thanks
Mark

 

It was discussed yesterday: https://www.hummerforums.com/forum/s...ad.php?t=22898
manual transmission fluid part number 88861800

 

Right, this topic was posted the other day. . .
When in doubt, go to dealer and get "manual transmission fluid" Part # 88861800
Tell them you have an 06.

 

i really hate to prolong this but now im curious.
first i believe i read in my 07 book about synth sae 90 trans grease. that would be for rear end and stick shift ,,right?
i havnt looked at my 10 book as i have a few yrs to go.

is it possible that different years used AUTO TRANS fluid in what must be the same t case???
it dont sound right!!

 

"I hate to prolong this" yeah right, you are prolonging this **** for some reason I just don't know what or why!

Your post Yesterday @ 1:21pm

"sounds like our egypt foreign policy,in,out,go,stay,go soon but no rush.
whats a mother to do" (by the way your not funny)

was after someone already stated that the 06, 07 and 08 manuals have 3 different types of fluids mentioned. Then a 10 owner said his manual said Dextron VI. So you already knew that 3 different years called for 3 different fluids in the same transfercase.

 

all the same, it does'nt sound right. i just present the truth with completly accurate and factual statements, and, a little humor thrown in on ocassion.
btw you culd keep your blood pressure down by just skipping over my posts if u have nothing to offer, like the x2,x3,x4 that is used by some to get in with nothing worthwhile!
after thinking this over, it makes more sense to use auto trans fluid. the mechanism is much like a front drive auto trans with chain drive so im done,satisfied.

 

06' using dexronVI in transfer case???? Look at this post????


#3 05-08-2010, 04:02 AM
Ken06H3
Senior Member Join Date: Nov 2005
Location: Dallas, TX
Posts: 151



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I had Sewell Hummer, Dallas do my 50K Service Package:

Diffs, 89021677 - GM Synthetic Axle Lubricant- 75W-90 Weight, $22.00
Tranmisson, Transfer Case 88861003 - GMDEXRONŽ-VI ATF, $7.36

Since my first oil change, Castrol 5W-30.

Gotta say, Sewell has given me a great service experience over the years
__________________
'06 H3/Boulder Grey/Adventure Package


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