12728245 Chevy Trailblazer ecm ecu computer 2021-2023 Transmission control module This is a good park

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12728245 Chevy Trailblazer ecm ecu computer 2021-2023 Transmission control module This is a good parkStock #4G132 This is a good tested ecm or engine computer for a 2021 2023 Chevy Trailblazer. The part # is 12728245. It comes with a 90 day warranty. Make sure your part number matches before ordering. Computer may need to be reprogrammed to your vehicle. Used parts may have minor dings and scratches.