2000 Dodge Ram 1500 V8 4x4 gear shift problems
During the winter when I put my truck in 4wd, it started slipping back into 2wd several times while I was driving. I kept having to put it back in. After parking it. I noticed it was very hard to move the gear shift. I tried to put it through the gears, i.e., 4x4H to 4x4L and couldn't move it. So I shoved it hard with my foot and it finally moved into 4x4 L. Then I put it into 2wd and can drive in 2wd, but before I take it to the repair shop, I want to know what is wrong with it. Has it lost its lubrication or is something broken inside?