This feature was making me hate my XT5, but with a simple $188 purchase it is no longer an issue.
Found on Amazon and got it in 3 days, but can be purchased elsewhere. Took 10 seconds to plug it in and it is done.
Range Technology Plug & Play Start/Stop Disabler RA005B Compatible with 2004-2020 GM Vehicles
This device (I read this somewhere) makes the car think the engine hood has been opened and shut while the car is running, making it go into a service mode that disables the Auto/Stop feature each time you start the vehicle. That said, it should work with the V6, but after reading your query I realized you asked about a 2021. I would contact the manufacturer for sure.
Unplugging it returns the vehicle to normal, but why? I am loving this thing and this vehicle now.
This reply was modified 1 month, 2 weeks ago by Hal.
Mr. Hal, I read a comment somewhere that if you leave the RA005B plugged in but don’t start the car for a few days, the battery may be drained enough so that the car won’t start. Can you confirm or do you run everyday so it’s not an issue?