2013 Yukon Transmission problems

[Jbird15]

I have a 2013 Yukon Slt with a little over 50k miles, the last couple of times I've been going down a steep downgrade the transmission seems to downshift for no reason. Any ideas what it could be or has anyone experienced this? New to the forum so sorry if this has been discussed, couldn't find anything while searching.

 

[Ex Euro Driver]

Pretty sure the grade braking option is activating.

 

[ezdaar]

its broke, you can ship me your yukon, I will drive it.

 

[ccapehartusarmyINF.(ret)]

yeah its some sort of engine braking feature

 

[SBCT]

Sounds normal to me as well

Sent from my XT1080 using Tapatalk

 

[Jbird15]

I'm guessing it's the braking assist option as well but should it be shifting really hard? Never experienced it quite as hard in my Silverado