Pontiac 1999 Montana Owner's Manual page 17

6. To unlatch the front latches, squeeze the angled latch
release bar toward the straight crossbar.
7. Remove the seat by rocking it slightly toward the
rear of the vehicle and then pulling it out.
Repeat these steps for the other section of the split
bench seat.
Replacing the Split Bench Sections
Don't put the sections of the bench seat in so they face
rearward because they won't latch that way. If you want
more storage room behind the seat, adjust each section
by sliding it forward.
The split benches have seat position labels, located on
the back of each seat, showing where the seat must go.
Follow that diagram.
D
The left (40) section of the 40/60 split bench uses the
A and B sets of floor cups.
D
The right (60) section of the 40/60 split bench uses
the C and D sets of floor cups.
D
The left section of the 50/50 split bench uses the G
and H sets of floor cups.
D
The right section of the 50/50 split bench uses the I
and J sets of floor cups.
See "Seat Controls" in the beginning of this section for
more details. The seat must be placed in the proper
location for the legs to attach correctly.
Make sure the seat is in the full rear position before
beginning this procedure.
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