Is a brand new bcm plug and play?
However, if you're referring to the outside lights when you say that they are staying on, that is not related to the BCM. The BCM handles door locks, retained accessory power for windows and radio, rear hatch release, various warning lights and chimes, interior courtesy lights, VATS, keyless entry, and the optional alarm system. Exterior lights are not related to the BCM except for the alarm flashing the parking lights when triggered.





