2011 GMC Canyon Regular Cab Owner's Manual - Page 46

3-2 Seats and Restraints Head Restraints Front Seats On some crew cab models, the vehicle's front seats have adjustable 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.