Important: Never swap OnStarĀ® vehicle integration units (VIU) or vehicle communication units (VCU) from other vehicles. Transfer of OnStarĀ® components from other vehicles should not be done. Each OnStarĀ® component has a unique identification number. The VIU has a specific station identification (STID) and the VCU has a specific electronic serial number (ESN). These identification numbers are used by the National Cellular Telephone Network and OnStarĀ® systems, and are stored in the General Motors vehicle history files by VIN.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the screw to 9 NĀ·m (80 lb in).
The STID number recorded will be needed by the OnstarĀ® Dealer support line.