I talked to a friend who used to own a ex-military Chevy K30 and he had the exact same problem, his revs weren't limited either.
When going through a emissions test he had to block the throttle lever with a piece of wood to prevent over revving the engine.

None of you ever had this problem? I find it kinda strange I don't read anything about this on the diesel page and the only guy I know who owned a GM 6.2 diesel had it too.
This must be a common problem, or is it the Dutch air or something in the water that make our pumps go crazy??