Auto start-stop

[VDCdriver]

@old_mopar_guy

There is no “button” people. Turning off auto stop/start is accomplished by turning it off within the infotainment screen.

It varies, depending on the particular vehicle. With many of them, the infotainment screen is the place to deactivate that feature, but others use a simple button on the dashboard.

[PvtPublic]

@old_mopar_guy

There is no “button” people. Turning off auto stop/start is accomplished by turning it off within the infotainment screen.

This is perfectly true on the OP’s truck.
But is not true across all brands in general.
Just thought I’d say that before the arguing started.

[TwinTurbo]

As noted not all are created equal.
But the OP was pretty specific:

I try to remember to turn off (dash switch)

and looking up a 2021 manual for the GMC Sierra diesel has this (note switch #17):