Genuine GM Fluid 88900402 Auto Trak II Transfer Case Fluid - 33.8 oz.

Blue transfer case oil 🛢 easy to change old one was dirty -hopefully this will last a few thousand miles.

Great for Gm maint

Oem product, same as original for 2012 Tahoe!!

The item pictured in the listing is shown with a standard size spout. The bottles that I actually received have the large (oversize) spouts, therefore not allowing me to use my fluid pump which is necessary to install the fluid.

Oem fluid is the only fluid I consume for lubricious purposes.

Used this in my 2001 Chevy Tahoe transfer case and my other Chevy vehicles that recommend this. USE THIS AUTO TRAK II and nothing else!! It has greater corrosion resistance !!! Buy you a screw on pumper with hose for the top of the bottle. Takes about 100 pumps each bottle but I was finished in like 15 minutes. Beats trying to funnel it into the hole under the vehicle. Mine used about 1 7/8 quarts before it started over flowing out of the top plug. All you do is remove the bottom plug on transfer case, let fluid drain, install bottom plug back in and tighten, take out top plug on transfer case, start filling with fluid until it starts running out of the top hole. Make sure you vehicle is on level ground.

I bought this to change out the transfer case fluid on my 2005 Chevrolet Silverado Z-71. I was worried about this being the correct fluid because Amazon did not have a picture posted of what the actual bottle would look like. I went ahead and bought it anyway and it turned out to be authentic ACDelco fluid after all. Changed out the fluid and everything is working fine 3,000 miles later. No worries! I'll try to post a pic later on.

Don't be fooled by the picture and the "Genuine GM Fluid 88900402" statement. Amazon sells this exact same product for $4 cheaper. It is sold as "AC Delco part No. 10-4017" it is 88900402 Auto-Trak II fluid for GM AWD and 4WD transfer cases. I ordered both, the cheaper to flush my transfer case (drain and refill and run it for around 100 miles) and the "Genuine GM" fluid to replace it and leave in. I received exactly the same thing for both orders. Black container with a blue label. The return postage would probably eat up the $8 price difference for the two quarts so why bother. Hope nobody else makes this mistake and I'll have to pay more attention to details in the future but the picture and nomenclature fooled me, I was going for the OEM stuff. Surprise! they both are. No surprise, Amazon sells it for 33% less.

purchased this a few years now still woks great