Some units of the GMC Sierra 1500, Yukon, and Yukon XL trucks and SUVs need an ECM software update to fix a glitch with the ...

Some units of the Cadillac Escalade and Escalade ESV from the 2022 and 2023 model years need a software update to fix a check ...

A check-engine light could be a gentle reminder or a sign of something catastrophic. We explain what a malfunction indicator light is and what you can do about it.

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.