Can't get truck out of D, transmission not responding

[Gus B.]

The tow truck is on the way, but I wanted to see if anyone could shed some light as to what could be wrong with my 03 Turbo.

After a 2 hour highway drive, that included a stop where I turned off the car, we arrived to our destination, only to find out that when I put the car on "P", the dash indicator and transmission, would still remain in "D" The shift lever can be moved from P to R to N, but takes a lot of effort to get into D. Once in D, I can go into the manual mode and shift it to 1st (dash indicator confirms this), but I cannot get the car out of D.

Had to remove the 2 fuel pump relays to turn the car off as it won't do it with the key since it thinks it is in D. Once off, I removed the negative terminal of the battery (under driver's seat) and when I re connected the battery, all I got was a air suspension fault code. The car still thinks it is in D, but now the dash indicates as if P, R, N, and D are all selected at the same time.

Anyone ever gone through anything like this? Any idea what the solution will/could be?

Thanks in advance for any and all help regarding this matter.