UPDATE: I force stopped the app, and cleared the cache just now, this is the umpteenth time I tried since this afternoon, it's finally cleared the condition.
I accidentally triggered the alarm in my truck while experimenting with a no FOB and PAAK disabled phone to simulate a stranded condition, checking to see if my door code and back-up start password were functional, at some point I triggered the trucks alarm system with a sequence of opening the door after a failed password attempt.
Eventually I got the truck to start with my backup password, the first attempt was a typo using the Sync virtual keyboard, BTW why does that keyboard take so long to appear, I know we've talked about it before, someone refresh my memory.
Anyhow..... I can't clear the alert banner, every time I click into the alert and request a delete, it returns to the same alert on the home Vehicle screen!!