Vibrating
I have a 2015 f150 I have a little problem with it vibrating when accelerating and even more when going uphill don’t know really what the problem is took it to a shop and they said something about my lug nuts and tires but it doesn’t make sense to me why it only really does it when accelerating it doesn’t do it while I’m going downhill or not accelerating please lmk what I should look into

