General Motors is quietly shutting down multiple plants for extended periods over the holiday season, with the Flint Assembly plant in Michigan closing from December 24 to January 26, 2026. This plant, which produces the Chevrolet Silverado HD and GMC Sierra HD, usually takes a break during the holidays but not for this long. GM says the extended downtime is to complete planned maintenance and “project work,” though it hasn’t detailed what that entails. Industry speculation suggests the plant may be preparing for the launch of GM’s new Gen 6 small block V8 engine expected with the 2027 model year, aligning with the timing of the shutdown.

Meanwhile, the Bowling Green plant in Kentucky, home to Chevrolet Corvette production, is also closed for an unusually long stretch, about four weeks compared to the typical two-week holiday closure. This extended pause is likely a strategic move to control inventory, as sales of high-performance sports cars like the Corvette tend to slow during winter months. Current inventory reports show thousands of unsold 2024, 2025, and 2026 Corvette models spread across the U.S., prompting GM to reduce production temporarily.