4X4 HIGH TAKES A WHILE TO LOCK IN . 4X4 LOW WILL NOT AND BUTON
DOES NOT STAY IN COULD IT BE THE BUTTONS OR THE ACTUATOR
When you first turn in the key does the 4X4 lights all turn on, then go back to what mode you are in? If not then you have switch and lamp problems, if they do then most likely it is the transfer case shift motor.