u/Leatherchameleon

This is my first truck, never been super mechanically inclined but I can google enough I suppose. This sound randomly came on after driving completely normal for a good 20-30 mins. When cruising at a decently high speed it doesn’t make noise but any bit of acceleration causes it to get loud. Only have 80k miles on it. It’s a 2018, trying to be a cheap ass and save 200$ on a diagnostics fee, any ideas? Sounds like it’s coming from the engine area, no check engine light though