8-Digit GM Part Number: This displays the part number for the VIU.

Component Serial Number 13-16: This is the third partition of the serial number.

Electronic Serial Number: This is the electronic serial number stored in the VCU which is used by the OnStar® Call Center.

Julian Date of Build: This displays the day of the year the module was built.

Module I.D.: This displays the version of OnStar® which the vehicle is equipped with.

Software I.D.: This displays the 3-digit number of the software version used on the OnStar VIU.

VCI Module Station I.D.: This is the station identification number stored in the VIU which is used by the OnStar® Call Center.

Year Module Build: This displays the year the module was built.