General Motors plans to run its Flint Assembly plant in Michigan six days a week starting in June, adding a full production day to meet what the automaker calls strong demand for heavy-duty pickup trucks, even as gas prices surge past four dollars a gallon.
The move will push roughly 4,200 hourly workers into mandatory overtime to cover the extra shift, Fox Business reported, citing the Wall Street Journal. The plant builds the heavy-duty versions of the Chevrolet Silverado and GMC Sierra, the 2500 and 3500 models that contractors, ranchers, and fleet operators depend on daily.
For anyone wondering whether American consumers have lost their appetite for big trucks, GM's answer is a flat no. And the company is betting real production hours on it.
The timing tells its own story. In late January, GM's Oshawa Assembly plant in Ontario, Canada, lost an entire third shift of production. The Canadian autoworkers union blamed tariffs for the cut. Now, weeks later, GM is adding capacity at a domestic facility instead.
Automakers across the industry have been moving to increase production at U.S. plants to avoid the Trump administration's tariffs on imported vehicles, including those assembled at company-owned facilities in Canada. Flint Assembly, already one of GM's busiest plants, is a natural beneficiary of that shift.
The pattern fits a broader GM strategy of relocating production lines to domestic plants where the company can control costs and avoid trade exposure.
The Flint plant holds a special place in GM's workforce culture. Earlier this year, management delayed the Sunday third-shift start by an hour so roughly 1,500 employees could watch the Detroit Lions play in the NFC Championship game, a scheduling exception that Fox News reported was driven by management's desire to let workers "savor the moment" while still keeping trucks rolling to dealers.
The production ramp comes against a backdrop that would seem to argue against big trucks. Gas prices have surged in recent weeks as supply disruptions tied to the conflict with Iran choked oil shipments through the Strait of Hormuz. On Wednesday, the national average for a gallon of regular gasoline hit $4.06, up more than 36% from $2.98 just a month earlier. Diesel climbed even harder, reaching $5.49 a gallon, a nearly 46% jump from $3.76.
Yet GM's leadership says those prices haven't dented buyer interest, at least not yet. GM Chief Financial Officer Paul Jacobson addressed the question directly at a Bank of America conference last month.
"Usually it takes four to six months of sustained high oil prices before people start to think, 'Maybe I should go for less mileage, or maybe I should buy down.' I don't think we see that."
Jacobson's point is grounded in history. Short-term price spikes rarely change buyer behavior in the truck segment. The people buying 2500s and 3500s aren't commuters doing the math on miles per gallon. They're towing trailers, hauling equipment, and running businesses. For them, the truck isn't optional.
That reality stands in sharp contrast to the years of political and regulatory pressure aimed at steering American consumers toward smaller, lighter, electrified vehicles. GM itself has absorbed billions in losses on its electric vehicle push, and the market's stubborn preference for full-size trucks is part of why the company has been forced to recalibrate.
For the 4,200 hourly workers at Flint Assembly, the six-day schedule means longer weeks and bigger paychecks. The Wall Street Journal reported that workers will be mandated into overtime to cover the additional day. That's good news for household incomes in a region that has ridden the ups and downs of the auto industry for generations.
It also raises practical questions. How long will the six-day schedule last? GM has not said. The company has framed the move as a summer ramp-up, but if demand holds, the extended schedule could stretch well beyond that.
Meanwhile, the contrast with Oshawa is hard to miss. Workers in Ontario lost a shift. Workers in Michigan are gaining one. The tariff environment has made that arithmetic unavoidable for any automaker with cross-border supply chains.
The broader auto industry faces deep uncertainty heading into 2026, with trade policy, energy costs, and shifting consumer preferences all in play. GM's bet on domestic heavy-duty truck production is one answer to that uncertainty, and it's a notably traditional one.
Wall Street's reaction has been mixed. GM shares rose more than 1.5% in midday trading on the news, but the stock remains down 7% year to date. Investors are weighing the truck-production upside against broader headwinds, including the company's costly retreat from aggressive EV targets.
Still, the decision to pour more resources into a proven moneymaker, gas-powered heavy-duty pickups, signals where GM sees its most reliable revenue. Not in battery plants. Not in software-defined vehicles. In the steel-and-chrome workhorses that built the company.
For years, Washington and Detroit's boardrooms talked as if the internal combustion engine were on borrowed time. Mandates, subsidies, and executive pledges all pointed toward an electrified future. The market kept saying something different.
Americans buy roughly three million pickup trucks a year. The heavy-duty segment, the trucks GM is ramping up in Flint, serves buyers who need capability, not virtue signals. They need to tow 20,000 pounds, not plug in at a charging station that may or may not work.
GM's move is a concession to that reality. Tariffs gave the company a reason to bring production home. Consumer demand gave it a reason to add a sixth day. And the EV losses gave it a reason to stop pretending the future is only electric.
Sometimes the market sends a message so loud that even a Fortune 500 boardroom has to listen. Americans want trucks. GM is building them, in Michigan, with American workers, on American overtime. That's not a complicated story. It's just one that a lot of people in Washington spent years trying not to hear.