2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 55

Power Reclining Seatbacks Seatback Latches The front seatbacks tilt forward to allow access to the rear of the cab. To tilt the seatback forward, lift the lever located on the outboard side of the seat cushion. { WARNING: If either seatback is not locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always push and pull on the seatbacks to be sure they are locked. If the seats have power reclining seatbacks, the control used to recline them is located on the outboard side of the seat behind the power seat control. . To recline the seatback, tilt the top of the control rearward. To bring the seatback forward, tilt the top of the control forward. To return the seatback to the upright position, push the seatback rearward until it latches. After returning the seatback to its upright position, push and pull on the seatback to make sure it is locked. . Center Seat Your vehicle may have a front center seat. The seatback doubles as an armrest and cupholder/storage area for the driver and passenger when the center seat is not used. Do not use it as a seating position when the seatback is folded down. 2-13 Do not have a seatback reclined if your vehicle is moving.