Not everyone likes the driving experience that comes with Dynamic Fuel Management (DFM) or Active Fuel Management (AFM). Some drivers claim turning off cylinders while driving with the goal of ...

As GM Authority readers are likely aware, Dynamic Fuel Management (DFM) – GM’s second-generation cylinder deactivation technology that disables a vehicle’s cylinders in the name of fuel economy – is ...

We may receive a commission on purchases made from links. Imagine you could get all the brawny output of a robust V8 engine in your truck when needed, but also get improved fuel efficiency while ...