This is the best summary I could come up with:

The escalated walkout began Saturday evening at a Spring Hill, Tennessee plant, GM’s largest in North America, just hours after the Stellantic deal was reached.

The added pressure on GM is substantial as Spring Hill makes engines for vehicles assembled in a total of nine plants as far afield as Mexico, including Silverado and Sierra pickups.

GM said it was disappointed with the additional strike at the Spring Hill plant, which has 11 million square feet of building space, “in light of the progress we have made.” It said in a statement that is has bargained in good faith and wants a deal as soon as possible.

Vice President Rich Boyer, who led the Stellantis talks, said the workforce will be doubled at the Toledo, Ohio, machining plant.

“Ultimately, the numbers they did come to agree with is what the UAW wanted,” said Jermaine Antwine, a 48-year-old Stellantis worker who had been picketing the automaker’s Sterling Heights, Michigan, plant Saturday.

Last month, the union representing Hollywood writers called off a nearly five-month strike after scoring some wins in compensation, length of employment and other areas.

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