No 3rd. O/D light blinking. Took the truck to auto shop...they couldn't find any codes, checked fluids, etc. Everything looks ok. They think it may be internal. Does anyone know where I can find either a reputable trans shop in Las Vegas or get a rebuild????

2001 Ford 250 7.3 diesel (200,000 miles)

 

If O/D light is blinking, there is a code. The shop doesn't have a scanner that can read Ford diesel codes. Might want to take it somewhere else.

As far as transmissions go, get a BTS if you can.