GMC 2018 Terrain Owner's Manual page 35

34 Keys, Doors, and Windows
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 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 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).
3. Slide the cap forward and
press the forward edge to
install the cap in place.
4. Release the door handle.