I have the same issue. I have 2022 suburban vibration starts when the truck was 25000 miles. It is vibrating when you maintain the speed it it very annoying. I took it multiple dealers and done some work but still the same. New tires, Transmission body valve, torque converter, fuel injections, fuel pump, drive shaft all replaced but vibration still there. Even dealer is tires of it. I am giving up please if someone know how to fix it share it.