GM
Type:
    Network - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Loss of Communication with Transmission Control System
Cause:
    If it is an ECM DTC, the Freeze Frame records are stored if it is a TCM DTC, DTC is stored, TCS is disabled and TC indicator is on

GM
Type:
    Network - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Loss of Communication with Transmission Control System
Cause:
    If it is an ECM DTC, the Freeze Frame records are stored if it is a TCM DTC, DTC is stored, TCS is disabled and TC indicator is on