GMC Terrain 2018 Owner's Manual page 66

Folding the Seatback
Either side of the seatback can be
folded for more cargo space. Fold a
seatback only when the vehicle is
not moving.
Caution
Folding a rear seat with the seat
belts still fastened may cause
damage to the seat or the seat
belts. Always unbuckle the seat
belts and return them to their
normal stowed position before
folding a rear seat.
To fold the seatback:
1. Fold the head restraint. See
Head Restraints 0 55.
2. Pull the handle on top of the
seatback to unlock it.
A tab near the seatback lever
raises when the seatback is
unlocked.
3. Fold the seatback forward.
Seats and Restraints
4. Stow the seat belt in the belt
stowage clip.
Repeat the steps to fold the
other seatback, if desired.
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