Need help figuring this one out
So my sister and mom have been driving the truck ever since I got it because I have been out of the country. Well they logged roughly 4500 miles on the thing and my sister called me recently saying that the truck feels like its grinding when she gives it gas sometimes.
Well I was driving it today and leaned into it and the truck downshifted and all the sudden it was grinding at like 60mph. I let off and then laid into it again and it was fine. It just feels like a transmission grind.
The truck has never been driven in 4x4 and I smelled the transmission fluid and it didn't smell burnt. And the truck is 100% stock.
I am taking it in tomorrow for an oil change and I will let the service adviser know about it but I was just wondering if the forum had any ideas.