I have a 2023 sierra 1500 5.3. I noticed the vibration slightly with factory tires. I put on bfg ko3's load range E and the vibration is worst at highway speeds. It does it when maintaining speed, starting up a slight incline or anytime the drive train has a slight torque on it, goes away when floating or coasting. I have a dfm disabler and nothing changed. Going into a head wind it gets significantly worse.