can this substitute for Automatic Transfer Case Fluid (GM Part No. 12378396)

auto trak 2 is slicker. It came about because the clutches in the transfer case were grabbing & causing a chatter. I've never heard of anyone having a problem using the auto trak 2 fluid instead of the auto trak fluid. I hope that helps you.

Is all ac delco auto track 2 fluid the same this part number doesn’t match my owners Manual ?

This is the correct fluid to use if and only if you have “full time” or automatic ALL WHEEL drive. It is NOT for four wheel drive, which mechanically is a totally different system, even though the result is similar- getting up a snow covered hill. I used this in my 2000 Olds Bravada. Fluid I drained looked dirtier, but the same blue. I believe that GM changed the part number, or updated the old fluid about 12 or 15 years ago. Like you, I did extensive online research before proving to myself that This Is the correct fluid to use for “automatic” All wheel drive before buying it.

Will this work in a 2007.5 lmm duramax?

It should work in the transfer case but I'd call the dealer parts department to be sure. My truck is a 1500. The transfer case in your Duramax may be a different unit requiring a different fluid.

Is this for the 2003 Silverado with 4 wheel buttons?

I used it in a 2004 Avalanche 1500 with push button 4WD and it made the service 4wd light stop. I decided to spend the extra to get this blue AC Delco fluid instead of a different brand the local part store offers

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⚙️ Keep your 4WD transfer case running like new—because your ride deserves the best!

TRUSTED OEM QUALITY - ACDelco Original Equipment guarantees factory-level reliability and peace of mind.
ULTIMATE HEAT RESILIENCE - Withstands prolonged high-temperature operation to keep your drivetrain cool under pressure.
PRECISION GM COMPATIBILITY - Specifically engineered for GM automatic 4WD transfer cases, ensuring seamless performance.
LONG LASTING FLUID INTEGRITY - Advanced oxidation resistance extends fluid life, reducing maintenance frequency.
OPTIMAL VOLUME FOR MAINTENANCE - 33.8 oz jug perfectly sized for efficient transfer case servicing without waste.

ACDelcoGM Original Equipment 10-4017 Auto-Trak II Transfer Case Fluid is a 33.8 oz premium fluid designed specifically for GM automatic four-wheel drive transfer cases. It offers superior oxidation resistance and high-temperature durability, ensuring extended fluid life and reliable drivetrain performance. This OEM-approved fluid supports optimal vehicle maintenance and longevity.

Reviews

J**E

Vaule

Great stuff and price

3.04.2025

M**W

Easy install, peace of mind

This is an easy install that gives peace of mind you’re keeping your truck maintained. Did I feel anything different after putting it in? No. However, it’s intended by GM engineers to be replaced on intervals and the previous fluid I removed from my truck was nasty looking, so it was refreshing watching the blue fluid go in my transfer case.

25.04.2025

B**K

good quality

would not sub for any other for my own vehicle

2.09.2025

W**G

This is the stuff you want for a GM Transfer case with the "auto" button

Great price for a GM OEM fluid that is specifically formulated for the 2000-2014 (I think) transfer cases. It will work in them all, but is designed for the transfer cases with the "auto" button. Dex III is preferred for the T Cases without the "auto" button. I needed 2 for my application (2000 Silverado 1500).

17.01.2025

J**S

Productos automotricez

Es exelente el aceite gracias

13.09.2025

L**E

Good fluid

Great fluid for Gm vehicles Works great. Used on my 2001 Tahoe 5.3 transfer case

24.02.2025

K**Y

Transfer case lubricant

Good stuff

15.09.2025

M**H

As described.

Exactly as described. I needed transfer case fluid for my 4X4 play toy

1.08.2025

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Brand	ACDelco
Package Information	Jug
Liquid Volume	1 Liters
Recommended Uses For Product	Auto
Item Form	Liquid
Manufacturer	ACDelco
Unit Count	33.8 Fluid Ounces
UPC	707773844021
Number of Items	1
Model	Transfer Case
Item Weight	1.96 pounds
Product Dimensions	8.8 x 4.8 x 2.5 inches
Item model number	10-4017
Is Discontinued By Manufacturer	No
Exterior	Machined
Manufacturer Part Number	10-4017
OEM Part Number	88900402

ACDelco GM Original Equipment 10-4017 Auto-Trak II Transfer Case Fluid - 33.8 oz

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