Delayed Locking; Automatic Door Locks; Lockout Protection - GMC Yukon 2021 Owner's Manual

Security Status indicator
A light on the upper surface of the driver's
door trim is used to indicate vehicle security
status.
This light will be OFF any time the ignition
is ON, except momentarily when vehicle
doors are locking.
Solid : Indicates securing with doors closed.
Fast Flash : Indicates securing with
doors open.
Slow Flash : Indicates battery conserving
secured state.
No light : Indicates unsecured state.

Delayed Locking

This feature delays the locking of the doors
until five seconds after all doors are closed.
When is pressed on the power door lock
switch while the door is open, a chime will
sound three times indicating delayed locking
is active.
The doors will lock automatically
five seconds after all doors are closed. If a
door is reopened before that time, the
five-second timer will reset when all doors
are closed again.
Press on the door lock switch again or
press on the remote key to lock the
doors immediately.
This feature can be programmed. See
Delayed Door Lock under Vehicle
Personalization 0 125.

Automatic Door Locks

The doors will lock automatically when all
doors are closed, the ignition is on, and the
vehicle is shifted out of P (Park).
Keys, Doors, and Windows
If a vehicle door is unlocked, and then
opened and closed, the doors will lock either
when your foot is removed from the brake
or the vehicle speed becomes faster than
13 km/h (8 mph).
To unlock the doors:
Press on the power door lock switch.
Shift the transmission into P (Park).
Automatic door locking cannot be disabled.
Automatic door unlocking can be
programmed. See Vehicle Personalization
0 125.

Lockout Protection

When locking is requested with the driver
door open and the vehicle is on or in ACC/
ACCESSORY, all the doors will lock and then
the driver door will unlock.
If the vehicle is off and locking is requested
while a door is open, when all doors are
closed the vehicle will check for remote keys
inside. If a remote key is detected and the
number of remote keys inside has not
reduced, the driver door will unlock and the
horn will sound three times.
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