In October, nearly 65 percent of new vehicles sold in the USA were trucks or SUVs.
As recently as 2012, passenger cars made up more than 50 percent of all USA new vehicle sales.
The reduction includes about 8,000 white-collar employees, or 15 percent of GM's North American white-collar workforce. Some will take buyouts while others will be laid off.
The company also said it will stop operating two additional factories outside North America by the end of next year, in addition to a previously announced plant closure in Gunsan, South Korea. "That adds up to more than 8,000 jobs, after almost 18,000 salaried employees were offered buyout packages last week".
Toyota also has discussed cutting costs, even though it is building a new assembly plant in Alabama. The Cruze compact vehicle will be discontinued in the USA market in 2019.
In a statement, Governor John Kasich said the news was "frustrating" but said he would work with GM to try to preserve the plant.
President Trump told reporters, "We don't like it, I believe they'll be opening up something else". The Chevy Volt plug-in hybrid will also be cut along with the Chevy Cruze compact, which will be made in Mexico for other markets.
Unlike its plants making passenger cars, many of GM's plants producing its higher-margin trucks and SUVs are running on three shifts, with some running six and sometimes seven days a week to keep up wih demand.
The U.S. plants are in places that have been economically devastated by job losses and pressure on wages for decades, which helped lead to the 2016 election of Donald Trump as U.S. president.
"I promise you they will be back on their feet", Ford told the Ontario legislature. A Canadian union, Unifor, which represents most unionized autoworkers in Canada, said on Sunday it had been informed by GM that there would be no product allocated to the plant in Oshawa after December 2019.
General Motors Co plans to announce as early as Monday it will significantly cut auto production in North America and stop building some low-selling vehicle models, a source briefed on the matter said.
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The Auto Union is precisely one of GM's problems.
Three assembly plants, in Detroit, Ohio, and Ontario, are earmarked for the main cuts, along with two factories in MI and Maryland that build transmissions and batteries.
"I can't believe our president would allow this to happen", she said Monday.
The GM auto plant has always been woven into the fabric of the town. In the 1980s the three plants produced as many as 730,000 cars and trucks a year, and employed about 23,000 people.
Democratic Sen. Sherrod Brown said the move will be disastrous for the region around Youngstown, Ohio, east of Cleveland, where GM is one of the area's few remaining industrial anchors.
According to the company's website, the Oshawa Assembly Plant employs 2,522 workers with Unifor Local 222.
Barra is reducing staff from operations that make conventional cars and hiring people who can design electric cars or add software prowess to GM Cruise LLC, the automaker's autonomous vehicle unit in San Francisco.
GM plans to announce a broader restructuring of its efforts as it shifts more of its focus toward electrified and autonomous vehicles, the source said.
Arno Hill, the mayor of Lordstown, home of the hulking factory where GM now plans to stop producing the Chevrolet Cruze small vehicle next year, said mood in the village of about 3,000 people was "somber".
Senator Rob Portman, a Republican from OH, helped shepherd through landmark corporate tax cuts previous year as a senior member of the Senate Finance Committee, of which Brown is also a member.