It has been just over a decade since GM V8 engine technologies like cylinder deactivation and light-weight oils became standard, how have they impacted sales? This question was raised by a recent ...

If your car has Active Fuel Management, you've probably already considered disabling it. But are AFM disablers even safe and ...

Another day, another algorithm churns out falsehoods larping as journalism. This time, the target is General Motors’ Dynamic Fuel Management (DFM) system, with a fresh round of AI-generated slop ...

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 ...