2021 GMC Sierra 1500

Another major GM recall affecting diesel-equipped pickup trucks and SUVs involves a transmission control valve that may fail.

GM is manufacturing certain full-size pickup trucks and SUVs without a fuel-saving automatic stop-start feature to mitigate vehicle supply shortages caused by the ongoing global microchip shortage.

A microchip shortage began to diminish vehicle inventory, but both that phenomenon and other disruptions in February and March have further stressed the supply side of the equation.

Pickup trucks accounted for about 20% of new-vehicle sales in 2020, and truck manufacturers will keep trying to gain a competitive edge with new models and features in 2021.

GM is recalling approximately 624,200 Chevrolet and GMC vehicles for an issue with a front-seat seat belt bracket.