cant change VIN

i swapped the pcm in my 2000 S-10 & Im having trouble, I disabled the VATs but it wont let me change the vin. It keeps giving me a error 31 "out of range"

i cant get the truck to start either but I'm not sure if that related to the vin thing or not....

can anyone help me out with this?

well I finally got it to start.. I guess I dont nessicarily have to change the VIN in the PCM