2003 Buick LeSabre Owner's Manual - Page 13

Reclining Seatbacks If your vehicle has power seats, the vertical control described previously in this section reclines the front seatbacks. If your vehicle has the manual recliner, lift the lever on the outboard side of the seat and move the seatback to the desired position. Release the lever to lock the seatback. Pull up on the lever without pushing on the seatback and the seatback will go to an upright position. L But don't have a seatback reclined if your vehicle is moving. 1-6