Drivers Mirror Memory

[WalleyeMikeIII]

I had this happen on my 2013. The issue was not the memory/computer...the issue whas the position sensor in the mirror itself. The mirror was replaced, fixed the problem.

 

[prettySUV01]

What seems to work for me:
When my mirror memory goes flaky, I remote start once and the mirrors go back to normal. Once a week seems to do it. (2013 Yukon Denali)

Definitely worth a try.
Waiting to hear back from service advisor. He was going to check with electronics tech again.