Despite the OEM's recent efforts, however, these supply and manufacturing issues have still not eased and continue to put the squeeze on GM's Ultium battery-employing EV production levels. The very same issues were just re-emphasised by GM CFO Paul Jacobson who spoke at the J.P. Morgan investor conference last week, explicitly pointing to the Cadillac Lyriq SUVs and BrightDrop van models as being affected by battery module assembly problems.