2004 Buick Regal Owner's Manual - Page 10
2004 Buick Regal Manual
Page 10 highlights
Reclining Seatbacks Lift the lever located on the outboard side of the seat to release the seatback, then move the seatback to the desired position. Release the lever to lock the seatback in place. Pull up on the lever without pushing on the seatback and the seatback will move forward. But don't have a seatback reclined if your vehicle is moving. 1-4
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