The powertrain control module (PCM) is the brain behind your vehicle’s engine and transmission, but diagnosing it can be tricky. From spotting symptoms to verifying electrical integrity, a methodical ...

Modern cars depend on a vast number of electronics, components, and vehicle systems to send us to and from our destinations. Some of those parts are well-known, like the engine, transmission, and ...

Updating your vehicle’s Powertrain Control Module (PCM) software can fix bugs, improve drivability, and boost efficiency. Known as reflashing, this process requires the right tools, stable power, and ...