Pontiac 2003 Montana Owner's Manual page 18

1. Squeeze the angled bar toward the solid crossbar
while placing the front hooks of the bench seat onto
the front two floor pins.
1-12
If the front legs are not attached correctly, the rear
legs will not attach to the rear set of floor pins.
2. Make sure the bench
seat is angled so that
the front hooks
clear the floor pins.