2000 GMC Yukon Owner's Manual - Page 26

Push and pull on the seat, making sure that the support rod is holding it firmly in place. Use the seat in this position only when necessary for additional cargo space. Removing the Third Row Seats Utility: If your vehicle has third row seating, it can be taken out for more cargo space. To remove the seat, fully open the rear doors and enter the rear of the vehicle. Fold the seatback forward into the seat cushion by using the lever labeled 1. The seat cannot be removed unless the seatback is folded. CAUTION: If the support rod isn't properly engaged, the folded third row seat could come loose in a sudden stop or crash. That could cause injury to people and damage to your vehicle. Always be sure the support rod is properly engaged when the third row seat is folded forward. To return the seat to its seating position, push forward on the seat and release the support lock rod. Secure the support rod in its stored position on the underside of the seat. Lower the seat to the floor and let the seat drop into place. Lift up on the carrying handle to make sure the seat is locked in place. Return the seatback to the upright position by pulling up on the release lever labeled 1 before the back can be folded upright. Pull the seatback forward to make sure it is locked into place. 1-13