Need help….”Failure initiating or Reading Parameter”

[King Louie]

I keep getting this fault when I try to change let’s say shifting parameters. It is in the run position with the engine off. It’s in a 2015 Tahoe 5.3. Won’t let me change or do anything except for backing out and unplugging. I’ve tried this many times over a few months with no luck. Any suggestions or help would greatly be appreciated.