GMC Terrain: Head Restraints
Front Seats
The vehicle's front seats have head restraints in the outboard seating positions.
WARNING
With head restraints that are not installed and adjusted properly, there is a greater chance that occupants will suffer a neck/ spinal injury in a crash. Do not drive until the head restraints for all occupants are installed and adjusted properly.

Adjust the head restraint so that the top of the restraint is at the same height as the top of the occupant's head. This position reduces the chance of a neck injury in a crash.

The height of the head restraint can be adjusted. Pull the head restraint up to raise it. Try to move the head restraint to make sure that it is locked in place.
To lower the head restraint, press the button, located on the top of the seatback, and push the head restraint down. Try to move the head restraint after the button is released to make sure that it is locked in place.
The front seat outboard head restraints are not designed to be removed.
Rear Seats
The vehicle's rear seat has head restraints in the outboard seating positions that cannot be adjusted. Rear outboard head restraints are not designed to be removed.
See also:
Moon roof (if equipped)
You can move the glass panel of the moon roof back to open or tilt up
(from the closed position) to ventilate the vehicle.
WARNING: Do not let children play with the moon roof or leave
children unattended in the vehicle. They may seriously hurt
...
Seat belt instructions for Canadian owners (in French)
The following is a French explanation of seat belt instructions
extracted from the seat belt section in this manual.
See the seat belt section for more detailed seat belt instructions in
English. ...

Roof