2008 Chevrolet Uplander Owner's Manual - Page 73

{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 lbs (18 kg), whose height is over 40 in (1 016 mm) 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 Restraint Systems on page 1-49 or Older Children on page 1-42. Securing a Child in the Built-In Child Restraint 1. Raise the head restraint until the lower edge of the head restraint is even with the top of the seatback. 1-69