Chevrolet 1994 Astro Passenger Owner's Manual page 16

If you have the lever,
you can adjust the
seatback by lifting the
lever. Release the
lever to lock the seat
back where you want
it. Pull up on the lever
and the seat will go to
an upright position.
Don't adjust the driver's seatback while your vehicle is moving.
Don't have a seatback reclined if your vehicle is moving.
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