2020 Yukon No crank No Start after tranny swap by Dealer a while back

[Bigell]

2020 Yukon SLT w 112500K miles. Recently got tranny replaced not even a thousand miles ago. Today I go on a bagel run, get back in the truck and it won’t start. Tried using the remote start w the app no luck, tried key fob remotely but no luck. Put it in neutral and tried to start but no luck. The dash lights up, radio works, I hear that clack before it’s supposed to start but that’s it. I’m stumped and stuck in the parking lot, miraculously it’s a 30 sec drive to the dealer/stealer. Any info is appreciated.