Chevrolet 1999 Prizm Owner's Manual page 11

Reclining Front Seatbacks
To adjust the seatback, lift the lever on the outer side of
the seat. Release the lever to lock the seatback where
you want it. Push on the seat to make sure it's locked
into position. Pull up on the lever, and the seat will go to
its original upright position.
But don't have a seatback reclined if your vehicle is moving.
CAUTION:
Sitting in a reclined position when your vehicle is
in motion can be dangerous. Even if you buckle
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CAUTION: (Continued)
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