Zak is new to the CarBuzz team, working as a freelance content writer. When Zak isn't writing How To articles for CarBuzz he's working as a high school automotive technology instructor. Before ...

Whether you like it or not, your vehicle is filled to the brim with computers. While these computers are a dream come true when everything is working the way it should, they can quickly turn into a ...

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 ...

Powertrain control modules determine how much fuel to inject into the cylinders and when that fuel should be ignited. If there is a problem, the PCM may be the issue itself, or it could be the sensors ...

Zak is new to the CarBuzz team, working as a freelance content writer. When Zak isn't writing How To articles for CarBuzz he's working as a high school automotive technology instructor. Before ...

This article was researched using publicly available sources. See our methodology and corrections policy. The Body Control Module (BCM) is the central computer that controls a wide range of electrical ...

There was a time that vehicles didn’t come with sophisticated computer systems. Those cars and trucks used pneumatic and mechanical systems to regulate idle speed, valve timing, and fuel delivery.

The powertrain control module (PCM) in your Jeep Wrangler – often referred to as your engine’s “computer” – acts as the brain of your vehicle’s engine. More specifically, the PCM in your Jeep is ...