Ring gear size?

[WilliamBos]

Wondering how to tell which rear ring gear size I have?

 

5.3, 6L80, 3:42 Axle ratio GU6 - G80 Locking Rear Diff

Z82 Trailering Package

[SierraHD17]

9.5".  There are only specific circumstances that you get anything else.  The 8.6" is with a V6 only.  The 9.76" requires you to have the RPO code NHT max trailer package with the 5.3.... or any configuration 6.2 powered truck.  That's it lol.

[WilliamBos]

Thank you.