My pepper just hit 900 miles today, and I've been noticing that the engine makes a weird humming noise at around 1200 RPM's. I can't help but notice it every time I drive now

Any thoughts? I'm assuming that is a drone of some sort and that it can't be corrected? It is pretty annoying and is starting to get on my nerves, which is somewhat unfortunate because I bought the truck brand new three weeks ago.

Any insight would be greatly appreciated!