Rumble in seat when idling?

[firemedic10584]

Still trying to gather ideas of what could be the problem. On my 2023 Laramie, only 4800 miles on it, I have a noticeable rumble / shake I can feel in my drivers seat when I'm idling with the truck in gear. There is no fluctuation in my RPMs when this is happening. If I turn auto stop/start on and allow the truck to shut down when stopped, the feeling will go away. I've confirmed it's not the radio, not the AC, I do not have any mods to the exhaust. Dealer of course says they don't feel it.

It's not a dramatic shake where the whole truck is shaking, but just a noticeable shake/rumble. Definitely not normal and is pretty annoying at this point. Any ideas of where I should begin to check?

 

[Smokey472]

Mine does it too. I just started leaving the auto start stop on. I've gotten used to it

 

[BlueHemi1500]

Dirty fuel injectors? Yes, I know the truck has low mileage. Bad fuel, try another source. Higher octane may solve the issue. If you turn off the AC/HVAC does the rumble go away as well? Lose/broken exhaust brackets/hangers?

BlueHemi1500

 

[PetePA]

The only thing that will fully eliminate it is to get a 2025 with the SST. The V8 configuration has inherently more vibration than an SST due to the cylinder orientation.