1997 Dodge Caravan

Hi,
My van speedometer and rpm meter inop. And auto shop said need to replace the bcm and need to reprogrammed the new bcm for the same milage of my van. I never heard of bcm affect the speedometer and programmed bcm. Is it ture?
Thanks,

Look for a fuse called IOD and/or Memory IOD under hood in the power distribution box. Remove the one labeled IOD or Memory IOD for at least 30 seconds and then reinsert it. The BCM can simply get hung and this should reset it for you.