Backup Battery Reset

The Backup Battery Timer Reset needs to be performed anytime a new OnStar^® backup battery is replaced. The OnStar^® module monitors certain elements of the backup battery (including age) and failure to perform this reset procedure could result in future needless replacement of the backup battery.

1. Using a scan tool, in the K73 Telematics Communication Interface Control Module under Configuration/Reset Functions perform the Backup Battery Timer Reset procedure.
2. Follow the scan tool directions to complete the procedure.
3. At the end of the procedure clear any DTC's