This Preliminary Information communication advises the technician that the following components will remain on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance for these parts Accessory AC and DC Power Control Module, Hybrid Powertrain Control Module, AC Charger - Low Content without Regular Production Option Code CBT High Voltage Battery Disconnect Control Module, and DC Fast Charger - High Content with Regular Production Option Code CBT High Voltage Battery Disconnect Control Module.