Assembly Lines
GM To Invest More Than $150 Million In Saginaw Metal Casting Plant
SAGINAW, MI—General Motors will invest more than $150 million in its Saginaw Metal Casting Operations to support production of next-generation V-8 engine components for full-size pickup trucks.
The investment will fund new equipment and tooling at the facility, enabling production of sixth-generation V-8 engine blocks and cylinder heads. The move supports GM’s broader powertrain manufacturing strategy and helps secure future operations at the plant.
“This significant investment of over $150 million is a clear commitment to the plant and our people,” said John Lancaster, plant director.
Saginaw Metal Casting Operations currently produces fifth-generation V-8 engine blocks and will continue that work as it prepares for the launch of the next-generation engines, which are scheduled to begin production in 2027.
The investment builds on approximately $5.5 billion GM invested in U.S. manufacturing in 2025, as the automaker continues to balance internal combustion engine production with its broader electrification strategy. The Saginaw investment also supports a previously announced $500 million investment in GM’s Flint Engine plant, which will manufacture the sixth-generation V-8 engines.
The Saginaw facility, one of GM’s oldest plants in the United States, employs more than 300 workers across three shifts. Company officials said the investment will help secure existing jobs while strengthening the plant’s role in the automotive supply chain.
By upgrading casting and machining capabilities, the investment positions the facility to continue supplying critical engine components for high-volume truck programs, which remain central to GM’s production mix and profitability.
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