GM is cutting overtime production this weekend at two U.S. assembly plants that produce its highly profitable full-size pickups due to the ongoing semiconductor chip shortage. The plants in Flint, Michigan, and Fort Wayne, Indiana, produce a mix of the company’s full-size pickups, including the Chevrolet Silverado and GMC Sierra 1500 models as well as their larger counterparts. This is the first time that GM has cut production shifts for its full-size pickups due to the chip shortage. GM was hoping to avoid this situation, and had previously reduced production at its car and crossover plants in North America to prioritize chips for the pickups as well as the company’s full-size SUVs.
See "GM Cutting Overtime Shifts at Two Truck Plants ", Michael Wayland, CNBC, April 9, 2021