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GM has issued a recall for certain examples 2021 to 2023 Chevy Trailblazer due to an issue related to the engine control module.
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.
GM has issued a recall for certain examples of the 2020 to 2023 Buick Encore GX due to an issue related to the crossover's engine control module.