Flash: Security Gateway Module (SGW) Enhancements
This bulletin involves reprogramming the SGW with the latest available software.
The SGW in these vehicles was flashed with a calibration intended to be paired with a different software version.No symptoms will be observable to the customer. Diagnostic services will still work correctly (e.g. vehicle scan, DTC read, etc.). However, the vehicle security firewalls will be lacking.Diagnostic Trouble Codes (DTCs) may be present. The technician will receive no notification indicating there is any problem with the SGW.
