AFM

General Motors will offer the 2019 Chevrolet Silverado and GMC Sierra 1500 pickups with the option for a new four-cylinder turbocharged engine capable of running on two cylinders. The 2.7L I-4 will make 310 horsepower and 348 foot-pounds of torque. It is the first modern-day four-cylinder engine in a full-size pickup and the first with

Active Fuel Management (AFM) is a trademarked General Motors technology that improves gas mileage by shutting down half of the cylinders under light-load conditions to reduce fuel consumption. It is also known as Displacement on Demand (DoD) or cylinder deactivation. How Does AFM Affect Performance? AFM is good for gas mileage and can be 5-7 percent