Ford Motor CompanyGeneral Motors said on the 17th that it will continue to use diesel engines in its next-generation pickup trucks to maximize fuel economy. GM plans a major redesign of its most important models, the Chevrolet Silverado and GMC Sierra, in the fourth quarter, the first such overhaul since 2019; together the two trucks are the company's best-selling models worldwide and account for the bulk of its profit. To improve fuel economy and towing capability, the models will offer an upgraded 3.0-liter diesel engine, paired with an optional large fuel tank that allows more than 900 miles of highway driving on a single fill-up. GM's main rivals in pickups, Ford Motor and Stellantis, are focusing on hybrids, while GM has largely avoided hybrids for years. GM President Mark Reuss said at a briefing that adding a hybrid system to an existing powertrain is a different proposition, and while acknowledging that diesel fuel prices hit a record above 6 dollars a gallon last week, he distinguished temporary geopolitical price spikes from structural increases, saying the company is betting on diesel's superior fuel efficiency over the long term.