2010 kia sportage
so I think my kia is stuck in 4wd. The light isn't on but its having a hard time turning. When I crank the wheel in any direction and try to go forward my rear tires will slip a little. Also when I go into reverse and turn either direction I hear a thunk coming from the rear then when I go into drive and start to turn in any direction it thunks again. It only does that while turning. If I reverse while going straight it doesn't make the sound. What the heck is wrong with my sportage? I did just replace the front passenger wheel baring and can't afford much else. Thanks for any advice.