[JitteryJoe]

Originally Posted by Timbo-1LE

It may be like my 21 Silverado. If not ordered when the car was new, the dealer cannot get the update from tech center. https://gm-techlink.com/?p=14771

This, I know I can technically buy the intake from a vendor / Member but would have no way of getting the dealer to install the software that goes with it. My fear is should there be some sort of major engine issue GM would deny warranty since it's "technically" not compatible with a 2021

Reading that link it makes even less sense since it's a dealer installed option... there is literally no difference between the dealer installing it on one that has it in the order code vs one that was getting it as an accessory.