I figured that the Chevy Forum would be the best place to ask if the rear ends ( 2007 - 2012) of Chevy Tahoe, GMC Yukon, and Cadillac Escalade are that same as those that are used for the Suburbans, and Yukon XL. I been searching for a replacement rear end assembly to swap with my Suburban and am curious if there are engineering differences that would prevent me from using the rear end assemblies that are used in Yukons, Tahoes, or an Escalade.

 

Mostly the same. The differences will be with self leveling and gear ratios.
Does your Suburban have the typical four-link and coil spring setup? Do you have a magnetic ride set up? What is your gear ratio? Is your Suburban a 1500, a 2500, or a 3500?

These are what you need to look for with a replacement from one of the other models you listed.

 

I have an 08 Chevy Tahoe LTZ flex fuel with 3.73 ratio rear axle. witch escalade will be compatible with my Tahoe. I’m in need of a rear straight axel and I can’t find it any where.