This is devastating news for the thousands of GM workers in Oshawa.
"We supported GM, as everyone remembers, years ago when they were in trouble ... our history goes back 100 years with General Motors and to say we're disappointed is an understatement".
He said the move was part of a wider need to stay nimble and adapt, especially after the 2008 recession.
GM names the Lordstown, Ohio, factory that makes the Chevrolet Cruze compact and the Detroit-Hamtramck plant, where the Chevrolet Volt, Buick LaCrosse and Cadillac CT6 are produced.
Oshawa Mayor John Henry said the closure would have ripple effects well beyond his city.
The Prime Minister's Office said Sunday it is "very disappointed" and concerned with the news General Motors Canada is planning to shut down its plant in Oshawa, Ont.
GM also said it will reduce salaried and salaried contract staff by 15 per cent, which includes 25 per cent fewer executives.
Trump’s Chinese Tariffs Target Consumer Electronics, Including Sony and PlayStation
Mr Trump has been demanding major changes from Beijing on market access and intellectual property protections for U.S. companies. Some experts fear that could cost hundreds of thousands of American jobs and raise USA auto prices by roughly 10 percent.
We've known for some time that North American consumers just aren't buying sedans much anymore, especially not North American ones. "I have certainly expressed my willingness to be a part of looking for a solution that takes those smart people and the assets that we have and tries to find a way in which they can contribute". GM said it is investigating the possibility of retooling the assembly plants to make other vehicles.
"Every time we have a problem with a point, I just put up a picture of a Chevrolet Impala, " the USA president was reported to have said. "We think it's appropriate to do it at a time, and get in front of it, while the company is strong and while the economy is strong".
"It is disappointing that GM failed to see and build upon this competitive advantage", said Ford in a statement on Monday.
It's part of a major restructuring that will prioritize the company's electric and autonomous vehicle programs. "They are showing that we can do this better than anybody in the world and we will perform here and show people that we can do this well". It also plans to cut production at two plants in the USA that make transmissions.
Workers said they were creating a blockade, stopping trucks carrying supplies from entering the plant.
Trudeau faced questions going into a cabinet meeting Tuesday morning about whether there was anything the federal government could do to keep the Oshawa plant open.
"The ones that are sole-sourced to the plant, you know, who've been living off GM rather than getting out and hustling other business, they're vulnerable". Two transmission plants, in Warren, Mich., and in Baltimore, also will close.