Quote:
Originally Posted by JitteryJoe
Could there possibly be an update to the ECU that would prevent them from doing the reflash?
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Quote:
Originally Posted by 2SS Capt
Highly, highly doubt that, they want to sell these aftermarket parts, the flash will be the correct one for your car.
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Emissions requirements may have changed for 2021. It's possible that the flash has not been released for 2021 and that may be why the intake isn't listed for 2021 models. The dealers will not be able to flash a 2021 if the GM system doesn't allow it.