GM has issued a Service Update for the 2024 GMC Hummer EV for a serial data gateway module replacement and reprogramming.

GM has issued a service update related to fixing an issue with the serial data gateway module in certain affected units of the 2024 GMC Hummer EV. Both Hummer EV models utilize Ultium battery and ...

The WIZ110SR, a plug-and-play gateway module, converts RS-232 protocol to TCP/IP and includes DB-9 and RJ-45 connectors for operation out of the box. The module enables remote ...