Chevrolet 2001 Impala Owner's Manual page 19

2. Pull forward on the seat tab to fold the seat cushion
down. This will allow you direct access to the trunk.
3. Fold the seatback down.
To raise the rear seatback, follow these steps:
1. Raise the seatback up and make sure it latches.
Push and pull on the seatback to be sure it is
locked in position.
Make sure the safety belt label is pointing to the release
button, and that both are facing the front of the vehicle.
Make sure the belt is not twisted. Push and pull on the
latch plate to be sure it is secure.
2. Reconnect the center
safety belt latch plate
to the buckle.
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