The Globe and Mail reports in its Wednesday edition that General Motors is set to end production of the light-duty Chevrolet Silverado 1500 pickup at its Oshawa, Ont., plant in November, and replace that volume by boosting output of the heavy-duty Silverado as it retools the plant to produce the GMC Sierra HD by 2028. The Globe's Eric Atkins writes that GM announced the $144-million investment to make the GMC Sierra HD in Oshawa after recent collective bargaining talks in August with Unifor, which represents 1,800 workers at the factory. GM declined to say when GMC Sierra HD output will begin. Employment levels will stay the same with the loss of the Silverado 1500. Total production at the plant in 2026 is expected to be 114,000 trucks, nearly evenly split between the light- and heavy-duty Silverado models. Sierra output is expected to be about 40,000 in the first year of production. GM last year said plans to increase employment and production of the Silverado 1500 at its factory in Fort Wayne, Ind., eliminating one shift -- about 500 jobs -- in Oshawa. GM plants in Pontiac, Mich., and Silao, Mexico, also make the Silverado, which was 2025's second-best-selling vehicle in the U.S., behind the Ford F-150 pickup.