I looked up my service invoice for the mode switch replacement. I had the really violent jerking going on when the truck shifted between gears.

********************
Cause: Internal Failure
051414D R&R Inhibitor switch
76 WI
8-96017-511-0 Switch, Position


FC:44
Part#: 8-96017-511-0

49610 Mode switch internal failure, etc...

"Performed scan tool diag. found DTC P0705. Performed Diag. trouble tree found mode switch to have internal failure. Replaced mode switch cleared code and road tested vehicle. Trans shifting correctly at this time"
***************************
I do not know what the cost is. At the time it was covered by warranty. My mechanic said that he saw the mode switch fail on VX's with as little as 20K to mid 40's.