GM Authority

Some GMC Hummer EV Units Need A Battery Energy Control Module Update

Certain units of the 2022-2024 GMC Hummer EV are included in a new Service Update from General Motors, which covers a fix for a battery energy control module issue. The Service Update applies to both ...
GM Authority

Some Cadillac Lyriq Units Need A Battery Energy Control Module Update

Certain units of the 2023 Cadillac Lyriq and 2024 Cadillac Lyriq are included in a new Service Update from General Motors, which covers a fix for a battery energy control module issue. Affected ...