reset the BCM???

'96 T&C LXi: just replaced the BCM because my wipers wouldn't work. Everything seems to work fine....EXCEPT I now have an odometer showing 194,xxx miles instead of 140,xxx miles. That not only scews with resale value, but also my tire and other parts warranties. I asked a local dealer and the svc rep said they can't reset it. Does anyone know any way to rest these BCM's???