Pontiac 2004 Montana Owner's Manual page 79

or local law requires that the top strap be anchored, or if
the instructions that come with the child restraint say
that the top strap must be anchored.
If your child restraint does not have the LATCH system,
you will be using the lap-shoulder belt to secure the
child restraint. Be sure to follow the instructions
that came with the child restraint. Secure the child in the
child restraint when and as the instructions say.
1. Put the restraint on the seat.
2. Pick up the latch plate, and run the lap and shoulder
portions of the vehicle's safety belt through or
around the restraint. The child restraint instructions
will show you how.
Third Row Outside Passenger Position
In the third row, tilt the latch plate to adjust the belt
if needed.
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