The 3LT package includes all features from the 1LT and 2LT trims, with a primary focus on premium materials and a sophisticated cabin experience. Performance & Mechanical *Engine: 6.2L V8 DI engine (LT2). *Horsepower: 490 hp (495 hp with the *optional performance exhaust system). *Torque: 465 lb-ft (470 lb-ft with performance exhaust). *Transmission: 8-speed dual-clutch automatic transmission. *0-60 mph: Under 3 seconds with the Z51 package. *Drivetrain: Rear-wheel drive.