2000 Chevy Blazer it sounds like tire noise

Last week we drove over ice hard in 4 wheel drive. After the snow was gone I heard the tires making a roaring sound. Begins about 20 mph and get louder as I pick up speed. What parts in the front end could have broke? I jacked up both sides, I shook the wheel from top 12 0clock and 6 0clock postion no movement on driver side and pass side. Then I shook 9 oclock and 3 oclock postion and it has movement on both tires this way. What parts could cause this problem? You said the 4 wheel drive may not have completely disengaged. I need to know how can I tell that the 4 wheel drive is not fully disengaged by looking under there. Next thing I want to know, is their any way it could be the tierods, pitman arm, ball joints or any other parts. The tires are fairly new, looks like no wear on tires. Transfer case, full of fliud, I changed it today. The 4 wheel drive buttons work like they should. I dont know where to start. Any sugestion. One more thing I drove it in the mudd and 2 and 4 wheel drive works. But still have roaring sounds. The tires roar in 4 wheel and 2 wheel. I have the 4 button switch. Thanks for the help