General Motors is offloading some of the production of its commercial vans to Navistar International to help the company meet demand for its Chevrolet Colorado and GMC Canyon midsize pickups.

Beginning in the second quarter of 2017, Navistar will manufacture cutaway versions of the Chevrolet Express and GMC Savana vans at its plant in Springfield, Ohio. Under the terms of the arrangement, GM will assemble cabs for the cutaway models, which will then be shipped to Navistar for installation of the interior and attachment to the chassis.

GM has struggled to keep up with demand for the Colorado and Canyon since the pickups were launched in 2014. The move will allow GM to produce up to 40,000 additional units of the midsize pickups at its Wentzville, Missouri assembly plant.

Through May of this year GM has sold 56,142 Colorados and Canyons in the U.S. During that same time period 36,639 Express and Savana vans were delivered.