1993 Buick Park Avenue Owner's Manual - Page 18

Reclining Front Seatback(s) To adjust the seatback, lift the lever on the outer side of the seat. Release the lever tolock the seatback where you want it. Pull up on the lever and the seat will go to its upright position. If you have the power option, it works with the switch on the sideof the seat. Push it back to recline the seat,push it forward to return the seatback to the up position. But don't have a seatback reclined if your vehicle is moving.