In a surprise move, the UAW on Saturday evening added Local 1853, which represents workers at GM’s manufacturing complex in Spring Hill, Tenn., to the strike.
GM builds the electric Cadillac Lyriq crossover, the GMC Acadia and the Cadillac XT5 and XT6 in Spring Hill. That followed an earlier strike expansion on Tuesday to include 5,000 GM workers who build highly profitable full-size SUVs in Arlington, Texas.
In addition to the GM workers on strike, nearly 2,500 employees at other GM plants were temporarily laid off as a result of the work stoppages, which have cost the company more than $800 million.
Ford's tentative agreement with the UAW, if ratified by that company's 57,000 members, will give raises totaling 25 percent over the next four years, reinstate cost-of-living adjustments and give top wages to new hires after three years, among other benefits. Stellantis matched the 25 percent wage raise and also agreed to reopen the idled Belvidere Assembly in Illinois.
GM and union negotiators had met for several days in an effort to reach a deal, including on Saturday, and the automaker had agreed to a 25 percent wage hike, according to sources familiar with talks.
This story will be updated.