I don't believe there is a way to "reprogram" it exactly if it's bad. If your electrical issue you explained in your previous post was resolved by replacing it, the donor BCM can be flashed by the dealer.
When I replaced the BCM in my ex-wife's van I took it to the dealer (which is now an empty building) and they put the correct mileage etc. on the donor.
If someone does know a way, I'm all ears.
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