The powertrain control module (PCM) in your Jeep Wrangler acts as your engine's brain. Here's where it can cause problems, and how to fix them.

Jeep recalls 1.4 thousand. Grand Cherokee to reprogram the engine control module Reasons for the recall of vehicles: the magnetic material from which the tone wheel is made ensures the operation of ...

The powertrain control module isn't the only computer that you can find on contemporary cars, but it is the primary computer that controls most systems and functions for vehicles that utilize a PCM.