Mary Barra, G.M.’s chief executive, said that the company had fixed battery-manufacturing problems and that its electric vehicles would soon be profitable.
The Minnesota governor running for vice president on the Democratic ticket also had strong words for Elon Musk, the billionaire businessman who is working to get former President Donald J. Trump elected.
After a delay of several months, General Motors said owners of its battery-powered models would now be able to use Tesla charging stations with adapters.
General Motors and the South Korean automaker say they will collaborate on new vehicles, buying parts and clean energy technologies.
With Trump once again in the Oval Office, America would be at risk of falling even further behind China in industrial competitiveness.
For the first time in its 87-year history, the automaker is considering shuttering factories in Germany, citing the need to remain competitive.
JD Vance, the Republican vice-presidential nominee, waded into a fight over plans by Gotion, a Chinese battery plant, to build a factory in Michigan.
The Taiwanese company has built a manufacturing hub in Zhengzhou, China, for its star customer Apple, but it is starting almost from scratch in the auto business.
Stressing science education, China is outpacing other countries in research fields like battery chemistry, crucial to its lead in electric vehicles.
China’s electric vehicle companies are making inroads in Thailand, a key industry hub, as Europe and the United States wield tariffs to keep them out.