General Motors employees work on the assembly line at the Fairfax Assembly & Stamping Plant in Kansas City, Kansas.
Jim Barcus for General Motors
DETROIT — General Motors is extending temporary shutdowns at three of its North American plants due to a global semiconductor chip shortage, which is expected to shed billions off automakers’ earnings in 2021.
The decision to extend the shutdowns at car and crossover plants in Kansas, Mexico and Ontario, Canada is in an effort to prioritize chips for production of GM’s full-size pickup trucks and SUVs, the company said Wednesday. GM also said its Gravatai plant in Brazil will take downtime in April and May.
GM previously said the North American…