A powertrain control module (PCM) is a small computer that manages the operations of your engine and transmission. It receives inputs from a network of sensors and activates other electronic components to adjust the way your vehicle performs. PCMs are more common on older vehicles before modern OBD II standards. These electronics boxes were some […]
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What exactly is an engine control module (ECM)? The short answer is that it is a small computer that manages how your vehicle runs. Unlike powertrain control modules found in older vehicles, an ECM focuses entirely on the engine’s operation alone. In the past, vehicles built with carburetors and mechanical point ignition systems were easy […]
One of the most critical and reliable parts on the majority of vehicles is called a powertrain control module (PCM). It’s often referred to as the heart of the vehicle, but more precisely should be called the brain of the engine. Every active component of the powertrain relies on the PCM to tell it what […]