[jakep4401]

I want to change the fluid in my transfer case. Anybody know what kind of fluid i need too put in and how much?. I have a 2008 gmc sierra 2500hd 4x4

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[OkDually]

Thread relocated over to "Drivetrain - 2001 - 2010" for more appropriate answers


:thumb:

 

[OKMillerTime]

Look in the owners manual to verify, but I believe the 2011 on up 2500hd trucks use a synthetic GL4 gear lube like 80/90. Last one I did took 2-3 quarts. I'm unsure what differences if any, there are between your transfer case and the 2011 thru 2019 trucks.

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[duramaxforlife]

I used ac delco manual transmission/ transfer case fluid in a 2007. Takes 2 quarts.

 

[DuramaxEric]

I have had great luck with the merchant automotive transfer case fluid. 2 quarts and your good to go.

 

[Oregonnovaguy]

This subject has been argued ad nauseum see here: https://www.dieselplace.com/forum/76-speciality-forums/64-maintenance-fluids/299016-transfer-case-fluid-options-detailed-research.html

Bottom line; look in your owner's manual and follow their recommendations, don't experiment. don't listen to the self-proclaimed "experts", and DO NOT over-fill.

 

[Rvn4me]

I want to change the fluid in my transfer case. Anybody know what kind of fluid i need too put in and how much?. I have a 2008 gmc sierra 2500hd 4x4

Your Owners Manual page 6-15
Transfer Case (Four-Wheel Drive) DEXRON®-VI Automatic Transmission Fluid.
Your Manual doesn’t give capacity but it’s 2 quarts.
I have used Allison Transynd oil and Mobile1 5w-30

 

[whiskeyrun]

I just did mine for the second time and both times used allison transynd works well

 

[Malibu SS]

Good ole Mobil 1 Synthetic 5-30 in mine for ages. No HOLES so far....crossed fingers.....Your truck....your decision.