GMC 1997 Suburban Owner's Manual page 19

To fold the seat, pull on the release handle at the bottom
of the seat cushion marked RELEASE.
When you release the seat cushion, the seatback is
automatically released. Pull the loop on the seatback
forward and fold the seatback onto the seat cushion.
While the seat is in the folded position, hang the latch
plate end of the outer passenger position safety belts
on the hooks at the top of each retractor cover, out of
the way.
To return the seat to the passenger position, just lift up
on the seatback and push it rearward until it latches.
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