America’s Most American Sports Car Just Got More American: GM Ends Canadian Production

General Motors has ended Canadian production of the eight-speed dual-clutch transmission (DCT) used in the Chevrolet Corvette C8. Beginning in 2026, all DCT units will be assembled by Tremec at its facility in Michigan. Previously, part of the production took place at a GM plant in Ontario.

Starting with the 2022 model year, some of the transmissions were built in Canada under license. That program has now concluded, and production has fully returned to U.S. manufacturing lines. Once assembled, the transmissions are shipped to Bowling Green, Kentucky, where the Corvette itself is built.

The move does not affect the transmission’s technical specifications. All versions of the C8 — from the 495-horsepower Stingray to the hybrid E-Ray, as well as the Z06, ZR1, and the 1,250-horsepower ZR1X — use the same Tremec DCT architecture. Higher-performance variants feature reinforced shafts, upgraded lubrication systems, and strengthened gears to handle increased loads.

Meanwhile, GM’s St. Catharines plant in Ontario will shift its focus to producing the next generation of gasoline V8 engines for the company’s full-size models. The production realignment appears to be driven by logistics and manufacturing optimization rather than a broader pullback from Canadian operations.