I have customer who has swapped a 2005 Monte Carlo S/C motor into his 2001 Monte Carlo. The engine runs very well with the 05' ecu, but will not communicate with the BCM and other modules as you would expect. Since I am unable to change the vin on the VCM to the 01 we are unable to do a GM relearn.
Does anyone have any idea on how to make the VCM communicate with the BCM. We do not have access to the 2005 vehicles BCM so swapping the other modules is not an option.