2006 GMC Yukon Owner's Manual - Page 105

Power Door Locks The power door lock switches are located on the front doors. If your vehicle has this power door lock switch, press the bottom of the switch on either front door to lock all the doors at once. Press the recessed side of the switch with the unlock symbol, to unlock all the doors at once. Press the raised side of the switch with the lock symbol to lock all the doors at once. Press the top of the switch to unlock all the doors at once. Press the bottom of the switch to lock all the doors at once. The power door locks will operate at any time even when the ignition is off. Operating the power locks may interact with the theft-deterrent system (if equipped). See Content Theft-Deterrent on page 2-17. 2-9