I have a 2007 ESV and I would like to change the Front Diff, transfer case and rear Diff fluids this winter. What is the factory fluids for these?

Does anyone have the part numbers of the following?

Front Diff
Transfer case
Rear Diff

I know some GM use a blue transfer case fluid, I would like to put factory GM fluid back in it.

thanks for the Help and also how much does it take of each one?

I would like to know this myself. Dealership wants $1,500 for this service.

I have a 2007 ESV and I would like to change the Front Diff, transfer case and rear Diff fluids this winter. What is the factory fluids for these?

Does anyone have the part numbers of the following?

Front Diff
Transfer case
Rear Diff

I know some GM use a blue transfer case fluid, I would like to put factory GM fluid back in it.

thanks for the Help and also how much does it take of each one?

From Owners Manual, however, volume not stated.

Front and Rear Axle: SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115.

Transfer Case: DEXRON-VI Automatic Transmission Fluid

You want to use a synthetic gear oil like Amsoil Severe Gear 75W-90 or Mobil 1 75W-90 for the front and rear diff, 4 quarts will do the job, I just changed two of my trucks. Transfer case around 2 quarts, trans about 6 quarts

Per hcvone's recommendation, I just swapped out my engine oil, front and rear diffs, and the trans with Amsoil and I'm very happy with the result... well other than a leaky oil filter. It was tight but leaking out all around the filter and left a quarter quart puddle in my drive. I took it back to the Mobil 1 location and they pulled it off and said it looked fine, but not sure why it was leaking. They put one of their filters on in the meantime and the leak was gone. I do have to give it to Amsoil though because I emailed them with my problem and they immediately contacted me to send the filter back and they're willing to reimburse me with any additional fees that I incurred during the problem solving. Total cost including shipping for the Amsoil order was $300 (and I have 6 quarts of trans fluid left as well as a couple quarts of diff fluid left) and the lil side job swapping the fluids was $70... cash lol. $1,500 is highway robbery... considering it took them less than 45m to do everything at Mobil 1.

Was the leaking filter an EA filter? That is the Amsoil synthetic oil filter, Ea047 or Ea050?

EA050 per the online chart

I guess also to note, my truck only has 14k miles on it and the lube tech said the diff oil was reallllly dirty and it was a good thing I was proactive about wanting to swap it out. I've heard some of the horror stories on the new V's with some guys finding their rear diffs only halfway full and things like that, so I figured I'd be cautious and swap both rides out. I'm not sure if I'm buying the increased mpg yet, but I've been driving it for a week and opposed to the 13mpg average (thank the 26" rims lol), I'm now getting a little over 14mpg avg about half of it is in the city I'd guess. The mpg increase is an added bonus though because really I only care about the wear and tear on it.

I have been thru almost a case of the 050's and no issues, could you see any damage in the one that leaked?

Nope... nothing... I sent it back to Amsoil to figure out the problem.

I have an Eao50 on my 2008 GMC as well and it has not leaked.

Its easy sometimes to damage a filter during installation by neglecting to clean the mounting base before installation. If you use a wrench to tighten the filter (a no-no) it can damage the gasket or distort the can so that you don't have a good seal.

AMSOIL filters are made for them by leading filter manf. such as Wix and Donaldson to name a few. So they are made to be a quality filter but as with everything, there can be defects.