I have a 2024 Duramax Suburban. About twice a week, but when we shut it off and turn it back on it goes away. It seems to happen when really cold: anyone know why this would be?

 

Don't know but 2024 should be under warranty. Pester your dealer until resolved.
BTW welcome to Chevy from WA!

 

They won’t do anything cause it’s not on when I go to the dealership 😒 I know these people are sick of me cause I had a CEL on so they “updated” something then it came on day after I left and took 2 weeks to get my car back in cause no one would call me back. Then they replaced a valve. So I was not happy