2000 GMC Envoy Owner's Manual - Page 18

Head Restraints Slide the head restraint up or down so that the top of the restraint is closest to the top of your ears. This position reduces the chance of a neck injury in a crash. The rear seat head restraints in your vehicle are adjustable. Slide an adjustable head restraint up or down so that the top of the restraint is closest to the top of your ears. This position reduces the chance of a neck injury in a crash. Push the button located under the rear head restraint to raise or lower it. After releasing the button, push and pull on the head restraint to make sure it's locked in place. Rear Seats Your vehicle has a folding rear seat which lets you fold the seatbacks down for more cargo space. The rear seat release handles are on the rear of the seatbacks. Push back on the seatbacks as you pull up on the handles. The head restraint will automatically fold out of the way when the seatback is folded down. To raise the seatbacks, just lift up the seatbacks and push until they lock in the upright position. Push and pull on the seatbacks to check that the latches have locked in the upright position. If they haven't, have them fixed immediately. 1-6