The power control module, aka PCM, manages the engine, transmission and other systems based on information it receives from various sensors around the vehicle.

Over 86% of the systems on today's vehicles integrate electronics and computer controls. Most people don’t realize how powerful the modern automotive Powertrain Control Module (PCM) really is ...

During their final years, a handful of automakers experimented with computer control of the humble carb, trying to squeeze out every last bit of efficiency and reduce pollution as much as possible.

Although “ECU” typically stands for engine control unit, it could also mean electronic control unit. Here’s what those mean.