GM Sales Gain 22%; Trucks Carry Load

General Motors Corp.’s U.S. sales rose by 22.0% to 297,555 units in October, with a surge in light-truck deliveries hastened by a drop in gas prices.

Truck sales grew to 185,235 units, up 38.2% vs. year ago, outpacing cars, which saw a 2.2% lift to 112,320, Ward’s data shows. Through September, GM light-vehicle deliveries are down 9.4% to 3,438,995 units.

A retreat on gas prices, ...