LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2004 >> DeVille Protection Series >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular Communication System >> Diagnostic Information and Procedures >> Scan Tool Data Definitions >> OnStar® Vehicle Communication Interface Module (VCIM)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

OnStar® Vehicle Communication Interface Module (VCIM)

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.

scientia non olet · About LEMON Manuals