General Motors introduced a new 6.6-liter Gen 6 small block V-8 engine for the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500, producing 481 horsepower and 501 pound-feet of torque—making it the most powerful naturally aspirated pickup engine. The engine features increased displacement, a higher 12.5:1 compression ratio, a new dual fuel injection system combining direct and port injection, and a completely redesigned oiling system addressing reliability issues from the previous 6.2-liter engine.
General Motors unveiled two new V8 engines for its 2027 Chevrolet Silverado 1500 and GMC Sierra 1500 pickups: a 5.7-liter L76 producing 402 hp and 428 lb-ft of torque, and a 6.6-liter L78 producing 481 hp and 501 lb-ft of torque. The smaller 5.7-liter offers better towing capacity at up to 13,700 pounds, while the larger 6.6-liter is targeted at performance-focused buyers.
General Motors will equip the 2027 Chevy Silverado and GMC Sierra V8 trucks with digital oil level gauges instead of traditional physical dipsticks, a cost-cutting measure that has drawn criticism from traditionalists who value the simplicity and reliability of mechanical components in pickup trucks.
General Motors is launching a new in-vehicle software experience for its redesigned Chevrolet Silverado and GMC Sierra pickups later this year, featuring a smartphone-like interface with proactive controls and improved integration of Apple CarPlay and Android Auto. The company restructured its digital operations under design leadership, with former Apple and Google executive Sebastian Bauer overseeing the project to reduce driver cognitive load and enhance the Super Cruise advanced driver-assistance system.