GMC Yukon 2021 Owner's Manual page 10

: Press to lock all doors.
If enabled, the turn signal lamps flash once
on the second press to indicate locking has
occurred. If enabled, the horn chirps when
is pressed again within three seconds. See
Vehicle Personalization 0 125.
Pressing arms the alarm system. See
Vehicle Alarm System 0 25.
If equipped with auto mirror folding,
pressing and holding for one second will
fold the mirrors, if enabled. See Vehicle
Personalization 0 125.
: Press once to unlock only the driver
door. If is pressed again within
three seconds, all remaining doors unlock.
The interior lamps may come on and stay
on for 20 seconds or until the ignition is
turned on.
If enabled, the turn signal lamps flash twice
to indicate unlocking has occurred.
If enabled, the exterior lamps may turn on.
See Vehicle Personalization 0 125.
Pressing on the remote key disarms the
alarm system. See Vehicle Alarm System
0 25.
If equipped with auto mirror folding,
pressing and holding for one second will
unfold the mirrors, if enabled. See Vehicle
Personalization 0 125.
Press and hold until the windows fully
open, if remote window operation is
enabled. See Vehicle Personalization 0 125.
: Press twice to open or close the
liftgate. Press once to stop the liftgate from
moving.
: Press twice to open the liftglass.
: Press and release to initiate vehicle
locate. The turn signal lamps flash and the
horn sounds three times.
Press and hold for more than
three seconds to activate the panic alarm.
The turn signal lamps flash and the horn
sounds repeatedly for 30 seconds. The alarm
turns off when the ignition is turned on or
is pressed again. The ignition must be off
for the panic alarm to work.
: To remote start the vehicle, double
press from outside the vehicle using the
remote key. The vehicle cannot be started if
a remote key is left inside the vehicle. See
Remote Vehicle Start 0 14.
Keys, Doors, and Windows
Keyless Access Operation
The Keyless Access system allows for doors
and the liftgate to be accessed without
removing the remote key from your pocket,
purse, briefcase, etc. The remote key must
be within 1 m (3 ft) of the liftgate or door
being opened. If the vehicle has this feature,
there will be a button on the outside door
handles.
Keyless Access can be programmed to
unlock all doors on the first lock/unlock
press from the driver door. See Vehicle
Personalization 0 125.
If equipped with memory seats, remote keys
1 and 2 are linked to seating positions of
memory 1 or 2. See Memory Seats 0 41.
Keyless Unlocking/Locking from the
Driver Door
When the doors are locked and the remote
key is within 1 m (3 ft) of the door handle,
pressing the lock/unlock button on the
driver door handle will unlock the driver
door. If the lock/unlock button is pressed
again within five seconds, all passenger
doors and the liftgate will unlock.
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