Vehicle Security; Vehicle Alarm System - GMC Chevrolet Silverado 2500HD 2021 Owner's Manual

Warning (Continued)
hands or other body parts between the
extended power assist step and the
vehicle.
If equipped, the power assist steps will
deploy when the door is opened and
automatically retract three seconds after the
door is closed. The power assist steps will
retract immediately if the vehicle starts
moving.
Disable the power assist steps before jacking
or placing any object under the vehicle. Too
much ice buildup may prevent deployment
of the power assist steps. Check the step
position before exiting the vehicle. If this
happens, disable the power assist steps,
clear the ice, then enable the assist steps
and confirm normal function prior to use.
Keep hands, children, pets, objects, and
clothing clear of the power assist steps
when in motion. The steps will reverse
direction if they encounter an obstruction
when opening or closing. Remove the
obstruction, then open and close the door
on the same side to complete the motion of
the assist steps. If the obstruction is not
cleared. the assist steps remain extended
while driving.
To extend both power assist steps
j
for cleaning, press while the vehicle is
in P (Park) or N (Neutral). Press
to retract them. The Driver Information
Center (DIC) will display a message.
Enable/Disable
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Press and hold for four seconds to lock
and disable the power assist steps. Press
j
and hold for four seconds again to
enable them. The DIC will display a
message.
Keys, Doors, and Windows

Vehicle Security

This vehicle has theft-deterrent features;
however, they do not make the vehicle
impossible to steal.

Vehicle Alarm System

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again
The indicator light, on the instrument panel
near the windshield, indicates the status of
the system.
Off : Alarm system is disarmed.
On Solid : Vehicle is secured during the
delay to arm the system.
Fast Flash : Vehicle is unsecured. A door or
the hood is open.
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