2004 Chevrolet Astro Owner's Manual - Page 12
2004 Chevrolet Astro Manual
Page 12 highlights
Seatback Latches The seatback lever is located on the right rear of your seat. If your vehicle has the non-touring bench seatback, pull up on the latch release lever while pulling the seatback toward the rear of the vehicle. After the latch has been released, push the seatback toward the front of the vehicle until it locks into place. To raise the seatback, unlock the seatback latch by pushing up on the lever while pushing down on the upper edge of the seatback. Move the seatback into the upright position. Make sure the seatback is locked when it is back in the upright position. {CAUTION: If the seatback isn't locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always press rearward on the seatback to be sure it is locked. 1-6