Caution: 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.
Make sure that the area under or in front of the seat is clear and that the head restraints are completely lowered.
On Yukon models, the rear seatbacks may be equipped with rearward folding head restraints. When the seatback is being folded down, the head restraint will automatically fold rearward to allow a flat load floor for cargo or entry to the third row seat, if equipped.
Pull up on the strap loop at the rear of the seat cushion. Then, pull the seat cushion up and fold it forward.
If the seatback cannot fold flat because it interferes with the cushion, try moving the front seat forward and/or bring the front seatback more upright. On the passenger side of the extended models, the lever at the base of the seat must be turned rearward to release the seatback.
To create a load floor release the panels from the seatback by pushing forward on the latch. Then fold the panels back to cover the rear seat footwell area.
To return the seat to the passenger position on a extended model, do the following:
Make sure that the buckles on the driver's side seatback are accessible to the outboard and center occupant and are not under the seat cushions.
On Yukon models, make sure the head restraints are returned to the upright position.