General Motorsis discontinuing its Chevrolet Silverado 4500HD, 5500HD and 6500HD medium-duty trucks, marking a major exit from the Class 6 and Class 7 commercial truck segment in North America.
Production will end on 30 September 2026 at the International Trucks facility in Springfield, Ohio, following GM's decision not to renew its long-running manufacturing agreement with the company. The move has triggered wider disruption across the commercial truck supply chain and raises questions about the future of purpose-built medium-duty vehicles.
The discontinuation centres on GM's decision to walk away from its production partnership with International Trucks, which began in 2015. The Silverado 4500HD, 5500HD, and 6500HD models were jointly developed and assembled at the Springfield, Ohio plant alongside International's CV Series trucks.
With GM opting not to renew the agreement, both the Chevrolet Silverado MD line and International CV Series production are being phased out. The CV Series will end earlier, with production scheduled to stop on 10 September 2026, followed by Chevrolet's medium-duty trucks later that month.
The Springfield facility has been heavily dependent on these programmes, and its future operations have already been reshaped following the sale of the site to Canadian defence contractor Roshel earlier in 2026.
Asreported by The Auto Wide, a key factor behind the decision is weakening sales performance in the medium-duty truck market. GM sold 1,273 Silverado medium-duty trucks in the first quarter of 2026, representing a 37.4% decline compared with the same period in 2025.
By contrast, Ford sold 2,331 F-650 and F-750 trucks over the same period, maintaining a stronger position in the Class 6 and Class 7 commercial vehicle segment.
Although medium-duty trucks typically operate at lower volumes than consumer pickups, the steep decline in Silverado MD sales highlighted pressure onGM's commercial truck portfolio. Industry conditions have made it increasingly difficult to sustain low-volume programmes without consistent fleet demand.
The Chevrolet Silverado 4500HD, 5500HD, and 6500HD were designed specifically for commercial applications such as towing operations, utility services, construction fleets and heavy transport work.
The range featured a 6.6-litre Duramax turbodiesel V8 engine producing 350 horsepower and 750 lb-ft of torque, paired with an Allison six-speed automatic transmission. Buyers could choose multiple cab configurations, including regular, double, and crew cab layouts, along with optional four-wheel drive.
Source: International Business Times UK
