Pontiac 2004 Montana Owner's Manual page 16

Folding or Reclining the Seatbacks
CAUTION:
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If the seatback isn't locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
The seatbacks on each section of the split bench seat
can be either folded forward or reclined. The following
explains how to use the nylon strap or recliner lever
to fold or recline the seatbacks.
1-10
Nylon Strap
To fold the seatback forward, pull the nylon strap
located on the rear of the seat or lift up on the recliner
lever located on the front of the seatback. The
seatback will lock into place.
Recliner Lever