2004 Pontiac Montana Owner's Manual - Page 92

A child whose weight is over 40 pounds, whose height is over 40 inches or whose shoulders are above the shoulder belt slots for the harness system, should be restrained in an add-on booster seat appropriate for the child's size. See Child Restraint Systems on page 1-63. Once the booster seat is outgrown, the child should sit on the vehicle's regular seat and use the vehicle's safety belts. Securing a Child in the Built-In Child Restraint {CAUTION: Using the vehicle's built-in child restraint as a booster seat for a larger child could cause injury to the child in a sudden stop or crash. A child whose weight is over 40 pounds, whose height is over 40 inches or whose shoulders are above the shoulder belt slots for the harness system should use a restraint system that is appropriate for their size, either an add-on booster seat or the vehicle's safety belt. See "Child Restraints" or "Older Children" in the Index. 1. Raise the head restraint until the lower edge of the head restraint is even with the top of the seatback. 1-86