4x4, BRAKE, ABD Lights On

What is your question?

Starting this weekend, first the 4x4 light comes shortly after starting to drive, followed quickly by the Brake and ABS lights coming on, followed by a beep. Googling seems to indicate one of three possibilities...steering angle sensor, wheel speed sensor(s), and transfer case actuator. The last one worries me. Do I need to go to the stearlership for a GT1 diagnosis? Snap On scan did not reveal anything useful: it threw out three codes: 24378, 50, and 00032. Will the autologic or any other scanner work?