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GM adds sixth day at Michigan plant to boost heavy-duty truck output

General Motors will increase production of heavy-duty trucks in Michigan to meet strong demand for gas-powered pickups despite high fuel prices.

The Flint Assembly facility will operate five to six days a week starting in June.

The 16 millionth vehicle produced at Flint Assembly, GM’s longest operating assembly plant in North America, rolls off the line on Monday, March 16, 2026, in Flint, Michigan. New owners Andy and Amanda Sanford climb into the 3.5 millionth Duramax diesel-powered Chevrolet Silverado 2500 Crew Cab LTZ produced by DMAX.

GM told Reuters it was making strategic adjustments to Flint Assembly’s production schedule in line with strong demand.

The Detroit automaker sold about 320,000 heavy-duty Silverado and Sierra pickups in the United States last year.

This increase comes at a time when fuel prices have increased significantly following the conflict in the Middle East and vehicle prices are hovering around $50,000.

GM, like other global automakers, is increasing production in the US to avoid being affected by tariffs.

The Flint Assembly plant in Michigan, which opened in 1947, is one of GM’s main truck plants and produces the profitable Silverado and Sierra heavy-duty pickups.

Last month, GM’s chief financial officer, Paul Jacobson, also said the company had not seen a significant change in sales following increases in gas prices following the war in Iran.

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Nathan Gomes reports from Bengaluru; Editing: Shinjini Ganguli and Tasim Zahid