GM has issued a voluntary emissions recall for certain units of the 2021 through 2023 Chevy Trailblazer to address an issue with the crossover’s engine control module, which may not properly ...

Although “ECU” typically stands for engine control unit, that’s not always the case. It can also mean electronic control unit, which may be the same thing, but could also be something that ...

The Engine Control Module (ECM) is the computer responsible for controlling the engine. The ECM communicates with other vehicle control units via a communication bus. This bus, called the Controller ...

The ignition control module is a crucial component of a vehicle's ignition system. It is a control unit responsible for regulating the ignition timing and generating sparks to ignite the fuel-air ...

The powertrain control module, aka PCM, is your vehicle’s brain. It manages the engine, transmission and other systems based on information it receives from various sensors around the vehicle ...

While a "harmonic balancer" sounds like some form of auto-tune, it's actually a necessary component for your car. What happens if it goes bad?

GM has issued a recall for certain examples of the 2015 to 2017 model-year Chevy City Express utility van over an issue related to the engine control module.

The wrong combination of parts can damage to the engine. Note also that fourth-generation engines do not have a TAC module and the gas pedal wires directly to the PCM. See All 17 Photos ...

ECU stands for Engine Control Unit. Also called an ECM (Engine Control Module), these little black boxes control all of an electronically fuel injected engine's functions and are found in 100 ...