Auto Shut Down Bypass

[Rmcgunner]

It is to stop the mount of emissions. Not for CO2 in your garage. All you have to do is push and hold the START button until a display shows on your dash.

 

https://gmauthority-com.cdn.ampproject.org/v/s/gmauthority.com/blog/2021/09/heres-how-to-stop-a-gm-vehicle-from-shutting-off-engine-when-parked/amp/?amp_gsa=1&amp_js_v=a9&usqp=mq331AQKKAFQArABIIACAw%3D%3D#amp_tf=From %1%24s&aoh=16466861833715&referrer=https%3A%2F%2Fwww.google.com&ampshare=https%3A%2F%2Fgmauthority.com%2Fblog%2F2021%2F09%2Fheres-how-to-stop-a-gm-vehicle-from-shutting-off-engine-when-parked%2F

Edited March 7, 2022 by Rmcgunner

[redwngr]

From the iink that Rmcgunner posted:

 

This doesn’t work on all GM vehicles, but more so on the newer ones, especially those running the automaker’s new Global B electronic architecture which first debuted on the 2020 Cadillac CT5, followed by the 2020 Cadillac CT4, Chevy Corvette C8, 2021 Buick Envision, and the 2021 Chevy Tahoe, 2021 Suburban, 2021 GMC Yukon and 2021 Cadillac Escalade.

 

 

Anyone got it to work on a pre-refresh T1 pickup?

My understanding was Global B doesn't get to pickups until the 22.5 (22 refresh) 1500 pickups. 

 

Edited March 8, 2022 by redwngr

[Dirtbiker]

I told my local dealer the TSB number and then paid them $250 or so to reprogram the truck. I will say one other dealer said they would only do it for emergency vehicles though. 

[RedLT]

This works if you are in the vehicle but disables itself once the door is open. To keep the truck running while inside, shift the truck to Neutral and apply the Parking Brakes.  You can now take a nap!