GM resumes Sierra production at Oshawa

6 sourcesUpdated Aug 30, 2026

GM will bring next-generation heavy-duty GMC Sierra production back to Oshawa, covering 4,600 unionized workers under a three-year deal amid tariff pressures from the United States. The agreement includes a C$144 million investment to launch Sierra HD production at the Oshawa plant and maintains two shifts for the duration of the 2026 agreement after previously shelving a third shift. It also allocates C$215 million to St. Catharines Propulsion Plant to assemble a next-generation transmission starting in 2029, creating about 250 jobs, while pledging not to close or sell the CAMI Assembly Plant in Ingersoll and giving it first consideration for Canadian Armed Forces defence work if contracts are awarded. Workers would receive a 3% annual wage increase, a $10,000 productivity bonus, a new December bonus, and a layoff-mitigation program as part of the package. The union is preparing for ratification before pivoting talks to Stellantis, with broader economic headwinds including U.S. tariffs cited as a major backdrop.

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Canada-U.S. tariff standoff and economic falloutstory 18 of 21 · since Aug 18, 2026

Aug 18, 2026Aug 31, 2026

Aug 31, 2026The Bank of Canada holds its policy rate at 2.25% amid the renewed trade war, with economists eyeing a possible hike only in 2026 or 2027.
Aug 30, 2026General Motors invests C$144 million to resume next-generation GMC Sierra heavy-duty production at Oshawa, Ontario, under a tentative three-year Unifor deal amid tariff pressures.
Aug 29, 2026Trump invokes Section 338 of the Tariff Act of 1930 to impose a 50% tariff on about $20 billion of Canadian imports, an unprecedented and legally untested move.