Bought it and used in my 2019 Silverado. A must have for disabling the 2-4-8 cylinder deactivation.
This can be installed and taken off without any programming. Simply plug it in and leave it in to the obd2 plug in to see the immediate result. Doesn't "chip" your vehicle, so warranty is kept clean.
Your vehicle now is an 8 cylinder only.
Save that transmission, the oil consumption goes way down as well!
It will be the best $200 you have spent on your vehicle. I originally spent over $300 on it and have traded the pickup off for a new 3/4 ton.
Reach out with any questions you have. These are a life (and vehicle) saver!