PCM memory error code

Not sure if any other folks ran into this issue:
2002 Dodge Ram 1500 5.9 gas 190,220 miles, automatic, 4x4.
So the other day the truck threw a code.
after turning the key on and off three times, code P0601 came up on the odometer. Found out that it's a PCM memory error code. (early dementia I'm guessing). Called the Dodge dealer to see about either getting mine re flashed (if that's an option) or getting a new PCM and having it flashed. Well PCM's are no longer available for my truck and this dealership told me that I have to scour other dealerships that may have the ability to fix this. Already struck out at another one as well. Truck still operates, starts, stops and goes but that light is annoying. Anyone have similar results? TIA