Chris D'

I noticed today while driving my 2020 GMC 1500 that the truck is making a knocking noise and the truck has a slight stutter from time to time after the noise starts. I hear the noise from underneath the truck. The noise comes and goes but I notice it mostly when going uphill. I have heard the noise at slow speeds and at highway speeds. What is the issue? Is it the transmission or something else? Please help. Thanks Chris