GMC Cadillac XT4 2019 Owner's Manual page 37

36 KEYS, DOORS, AND WINDOWS
Press the button again within
five seconds to unlock all doors.
Press the button a third time to
lock all doors.
When leaving the vehicle, press the
button on any door handle to lock all
doors. Auto Door Lock can be enabled
or disabled. See Vehicle Personalization
0 146.
To lock or unlock the vehicle from any
passenger door:
Press the button on the passenger
door handle. This will lock or
unlock all doors.
See Remote Keyless Entry (RKE) System
Operation 0 28.
Driver Door Key Lock Cylinder
Access (In Case of Dead Battery)
To access the driver door key lock
cylinder:
1. Pull the door handle (1) to the
open position and hold it open
until the cap removal is
complete.
2. Insert the key into the slot (3) on
the bottom of the cap (2) and lift
the key upward.
3. Move the cap (2) rearward and
remove.
4. Use the key in the cylinder.
To replace the cap:
1. Pull the door handle (1) to the
open position and hold it open
until the cap installation is
complete.
2. Insert the two tabs (6) at the
back of the cap between the
seal (5) and the metal base (4).