GM has issued a service bulletin for a reflashing of the Engine Control Module (ECM) in certain units of the 2021 to 2023 Chevy Trailblazer. The fix: owners of affected vehicles are to bring their ...
To remedy the matter, GM will notify owners, and dealers will reprogram the ECM software, at no cost to owners. The automaker had not yet released a notification schedule. Owners can reach GM customer ...
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