General Motors will invest C$144 million ($104 million) to add assembly of the next-generation GMC Sierra heavy-duty pickup at its Oshawa, Ontario plant, according to a tentative labor agreement with union Unifor.
The deal, reached over the weekend, also includes a commitment not to immediately sell or close GM’s second Canadian assembly plant in Ingersoll, Ontario. The agreement covers 4,600 Unifor members whose ratification vote is scheduled for this weekend.
The investment follows unresolved U.S.-Canada trade talks last week aimed at reducing the 25% U.S. tariff on Canadian-made vehicles. Canada has insisted any deal must preserve a viable Canadian auto assembly and parts sector. U.S. President Donald Trump has separately threatened to raise tariffs on all Canadian cars, trucks, automotive parts, and steel to 50% starting January 1, 2027.
GM’s Oshawa plant, located in Canada’s most populous province, will now produce heavy-duty Sierra models under the agreement, while the Ingersoll facility remains operational for the time being.
