Pontiac 2004 Montana Owner's Manual page 91

If your vehicle has this option in a bucket seat, each
bucket seat that has the built-in child restraint fits in only
one location in your vehicle. To find out where a
bucket seat that has a built-in child restraint must be
located in your vehicle see Rear Seat Operation
on page 1-7. If your vehicle has this option in a 60/40
bench seat, this bench seat will only fit in the second
row of your vehicle. In both types of seats, the built-in
child restraint works the same way.
This child restraint system conforms to all applicable
Federal Motor Vehicle Safety Standards.
Each child restraint is designed for use only by children
who weigh between 22 and 40 pounds (10 and
18 kg), whose height is between 33.5 and 40 inches
(850 and 1 016 mm), whose shoulders are below
the shoulder belt slots for the harness system, and who
are capable of sitting upright alone.
The child should also be at least one year old. It is
important to use a rear-facing infant restraint until the
child is at least one year old. A rear-facing restraint gives
the infant's head, neck and body the support they
would need in a crash. See Older Children on page 1-57
or Infants and Young Children on page 1-59.
1-85