2004 GMC Yukon Owner's Manual - Page 26

Replacing the Bench Seat {CAUTION: {CAUTION: If the seatback is not 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. A safety belt that is improperly routed, not properly attached, or twisted will not provide the protection needed in a crash. The person wearing the belt could be seriously injured. After raising the rear seatback, always check to be sure that the safety belts are properly routed and attached, and are not twisted. To reinstall the full bench seat, do the following: {CAUTION: A seat that isn't locked into place properly can move around in a collision or sudden stop. People in the vehicle could be injured. Be sure to lock the seat into place properly when installing it. 1. While holding the rear of the seat up, slide the front wheels into the slots on the floor. The front latches should lock into place. If the latches do not lock, try tilting the rear of the seats upwards. 2. Once the latches are engaged, let the seat drop into place. Release the lever labeled 1 to return the seat to its upright position. 3. Push and pull on the seat to make sure it is locked into place. The seatback cannot be raised to the upright position unless the seat is secured to the floor. 1-20