This bulletin applies to 2007-2013 GMC Yukon and Sierra vehicles. DTC B2555 may be found in a driver and/or passenger door module (DDM or PDM). This DTC is associated with front driver and passenger door panel courtesy lights that are only available on certain models.
The door module calibrations are the same if equipped with or without the door panel courtesy lights. This means that the DTC may set on a vehicle that is not equipped with the door panel courtesy lights.
DTC B2555 should be ignored if set on a vehicle that is not equipped with the courtesy lights.