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

Product ID: 2656916

Details

Brand
ACDelco
Item Weight
2 Pounds
Liquid Volume
1 Liters
Material
Synthetic
Package Information
Jug

🔥High-temp endurance & oxidation resistance

⚙️GM-approved for 4WD transfer cases

🛢️33.8 oz premium fluid volume

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R896

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
ACDelco
Item Weight
2 Pounds
Liquid Volume
1 Liters

Description

🛠️ Keep your 4WD transfer case running like new — because your GM deserves nothing less!

TRUSTED BY THOUSANDS - Rated 4.8 stars by over 2,300 users who demand genuine quality and reliability for their GM vehicles.
SMOOTH QUIET SHIFTING - Keeps your transfer case running silently and smoothly, enhancing driving comfort and control.
PRECISION GM OEM APPROVAL - Specifically engineered for GM automatic 4WD transfer cases, ensuring perfect compatibility and peak performance.
EXTENDED HIGH TEMP STABILITY - Formulated to withstand prolonged high-temperature operation, protecting your transfer case under the toughest conditions.
SUPERIOR OXIDATION RESISTANCE - Advanced formula resists oxidation for longer fluid life, reducing maintenance frequency and costs.

ACDelco GM Original Equipment 10-4017 Auto-Trak II Transfer Case Fluid is a 33.8 oz premium fluid specifically approved for GM automatic four-wheel drive transfer cases. It features enhanced oxidation resistance and high-temperature durability to extend fluid life and maintain smooth, quiet operation. Trusted by thousands of GM owners, this OEM-recommended fluid ensures optimal transfer case performance and longevity.

Specifications

ASIN	B002H8U3KK
Best Sellers Rank	#43,344 in Automotive ( See Top 100 in Automotive ) #124 in Transmission Fluids
Brand	ACDelco
Brand Name	ACDelco
Container Type	Jug
Customer Reviews	4.8 out of 5 stars 2,383 Reviews
Global Trade Identification Number	00707773844021
Included Components	Transfer Case
Item Form	Liquid
Item Type Name	Transfer Case
Item Weight	2 Pounds
Liquid Volume	1 Liters
Manufacturer	ACDelco
Material	Synthetic
Package Information	Jug
Recommended Uses For Product	Auto
Specific Uses For Product	Auto
UPC	707773844021
Unit Count	33.8 Fluid Ounces
Warranty Description	No Warranty

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15.02.2026

M**K

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S**E

26.09.2025

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19.03.2026

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6.01.2026

5**R

25.10.2025

S**D

30.03.2026

B**K

2.09.2025

A**2

21.02.2016

س**د

2.01.2026

G**R

3.04.2026

S**.

22.11.2025

R**L

20.12.2023

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