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Drivetrain - 2001 - 2010 Discuss front and rear axle, transfer case, brakes, etc. Transmission questions belong in the appropriate transmission forum below. First through fourth generation...


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Old 02-08-2020, 04:59 AM   #1 (permalink)
jakep4401
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Changing transfer case fluid

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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Old 02-08-2020, 09:34 AM   #2 (permalink)
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Thread relocated over to "Drivetrain - 2001 - 2010" for more appropriate answers




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Old 02-08-2020, 10:24 PM   #3 (permalink)
OKMillerTime
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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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Old 02-08-2020, 10:53 PM   #4 (permalink)
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I used ac delco manual transmission/ transfer case fluid in a 2007. Takes 2 quarts.
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Old Yesterday, 04:34 PM   #5 (permalink)
DuramaxEric
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I have had great luck with the merchant automotive transfer case fluid. 2 quarts and your good to go.
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Old Today, 01:41 AM   #6 (permalink)
Oregonnovaguy
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This subject has been argued ad nauseum see here: https://www.dieselplace.com/forum/76...-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.
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Old Today, 08:55 AM   #7 (permalink)
Rvn4me
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Quote:
Originally Posted by jakep4401 View Post
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

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Old Today, 03:34 PM   #8 (permalink)
whiskeyrun
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I just did mine for the second time and both times used allison transynd works well
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