4wd problem
 

Awhilw back I gave someone a jump and it locked into 4wd. My uncle took a part off the bottom so it wouldn't run in 4wd. Well its a year or so later and I thought I was slipping on ice but it was the car. It was in drive giving it gas but it wouldn't move. I played with buttons while the key was on but not running and now it runs fine but in 2hi. Need advice. Solenoid? Idk