This DTC is indicated when a body control module update is not completed properly.
Before updating the body control module, make sure the 12 volt battery in the vehicle is fully charged, and connect a 12 volt jumper battery (not a 12 volt battery charger) to maintain system voltage.
Never turn the vehicle to the ACCESSORY mode or OFF (LOCK) mode, during the reprogramming. If there is a problem with the reprogramming, turn the vehicle to the ON mode.
DTC Description
DTC
B1003 BCM (Body Control Module) PROGRAM Error
1.
Problem verification:
Problem verification
?1.
Clear the DTCs with the HDS.
?2.
Turn the vehicle to the OFF (LOCK) mode and then the ON mode.