I think it is in the "Apps". When I test drove the salesman showed me but was distracted by all the Bling and forgot. I was just pulling the 30 amp fuse (F-21 on my Truck) to disable but then stumbled across the setting.
It is a major pain in the A$$ when you wash the Truck. Those power steps collect a lot of winter crap and you can't get it washed off unless they are deployed
Owner's Manuals are Awesome
POWER SIDE STEPS — IF EQUIPPED
The Power Side Steps will extend a step for
easier entry and exit of the vehicle.
When configured for “Auto” mode, the Power
Side Steps will deploy when any of the doors are
opened, or when the deploy setting is activated
through the touchscreen. When configured for
“Store” mode, the steps will not deploy unless
the setting is selected manually through the
Controls menu within the touchscreen.
If the vehicle speed exceeds 5 mph (8 km/h), or
if the retract setting is selected within Uconnect
Settings Ú page 258, the steps will retract