Hello, I have an 06 xlt 4x4 117k miles. My truck is currently stuck in 4hi. I've changed the shift motor, esof switch, 2 relays on driver side and vaccum solenoid against the passenger fire wall and still stuck in 4hi. I brought it to my local mechanic who works mainly with fords and he is suppose I running a pin point test on it today. I could not drive it for a week due to trying to get the 4x4 to work properly. Any ideas on where else to look ? I also had a reman PCM installed about 2 months ago.