Just popped up while cruising down the road. Pulled into the dealer, being scanned now. Let’s take guesses on what it is.

This truck is in for a rough summer in Phoenix. Lolbased on the outside temp reading on your dash, it could be "intake air over-temp"
At that point, regardless of speed , I’m jumping out of the truckNow that would be a good spoof. Driving down the road in your RHO, CEL pops up on the dash, then Jigsaw appears on the Uconnect screen.