GMC canyon 2018 Owner's Manual page 86

When installing a rear-facing child
restraint in the right rear seating
position, move the front seat all the
way forward and tilt the seatback
forward to properly install the child
restraint. See Power Seat
Adjustment 0 45, Seat Adjustment
0 45, and Reclining Seatbacks 0 46.
When a rear-facing child restraint is
installed properly, the front
passenger seat cannot be used.
1. Always install the seat cushion
extension in the right rear
seating position when installing
a forward-facing or rear-facing
child restraint. Also use the
seat cushion extension for
booster seats that extend past
the front edge of the seat
cushion.
2. Press the button for the
passenger side headrest at the
top of the seatback and pull up.
Seats and Restraints
3. Insert the headrest posts into
the holes on the front of the
passenger side seat cushion to
install the seat cushion
extension. The notches on the
posts should face the
passenger side of the vehicle.
Try to move the headrest to
make sure it is locked in place.
4. If the child restraint
manufacturer recommends that
the top tether be attached,
adjust the top tether to its full
length and attach the top tether
hook to the anchor. Refer to
the child restraint instructions
and the following:
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