2005 Buick Rendezvous Owner's Manual - Page 13

Head Restraints {CAUTION: Sitting in a reclined position when your vehicle is in motion can be dangerous. Even if you buckle up, your safety belts can not do their job when you are reclined like this. The shoulder belt can not do its job because it will not be against your body. Instead, it will be in front of you. In a crash you could go into it, receiving neck or other injuries. The lap belt can not do its job either. In a crash the belt could go up over your abdomen. The belt forces would be there, not at your pelvic bones. This could cause serious internal injuries. For proper protection when the vehicle is in motion, have the seatback upright. Then sit well back in the seat and wear your safety belt properly. Adjust your head restraint so that the top of the restraint is closest to the top of your head. This position reduces the chance of a neck injury in a crash. The front seat head restraints are adjustable. Slide the head restraint up or down to adjust it. The rear seat head restraints in your vehicle may be adjustable. They work the same as the front seat head restraints. 1-7