HOW TO - Rear Differential Fluid Change (2021+ Yukon/Tahoe/Suburban)

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fondupot

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So this new to me Yukon had the dreaded rear diff groan. Did some research and with the help of @Cjamaco79 got some fluid ordered up and tackled the rear differential fluid change myself. Not to bad of a job, can be done in about 20 minutes.

Many of you know the G86 mechanical locking differentials have a TSB that the dealer can perform and if within warranty its free. But if you're out of warranty, they'll charge you an arm and a leg. The fluid is not that expensive, it can be had for less than $100.

Here is my first technical/how to contribution to the forum, hope it helps someone.
 

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