2013 ram sport 5.7 hemi with afe cold air intake oiled.
used 4 wheel drive auto than back to 2 wheel drive and now i have a sound that sounds like big mudder tires. I don't have mudder tires and I've never had this noise until I used the 4x4 auto. Any ideas what it could be? It's only when I'm moving. This was the first time I used the 4x4 auto. I just bought this truck and just had the passenger cv axle replaced.

 

Did the 4wd or 4Low light go off on the dash? If you turn a tight corner on hard pavement does it jerk (like it's still in 4x4 mode)? I had a similar issue over the weekend. It wouldn't go out of 4 Low no matter what I tried. I finally shut it off and let is set a while. Came back & when I first started it, the 4 Low light was still on, but as soon as I put it into drive, the light went out and the truck went back to 2wd. It was the first time I had used 4x4 since I bought the truck (4 months ago....and then it was just to see that it worked).

 

Yes light is off and no it drives normal just has the loud hum like mud tires.