2003 GMC Yukon Owner's Manual - Page 66

{CAUTION: If a LATCH-type child restraint isn't attached to its anchorage points, the restraint won't be able to protect the child correctly. In a crash, the child could be seriously injured or killed. Make sure that a LATCH-type child restraint is properly installed using the anchorage points, or use the vehicle's safety belts to secure the restraint. See "Securing a Child Restraint Designed for the LATCH System", "Securing a Child Restraint in a Rear Outside Seat Position", "Securing a Child Restraint in a Center Rear Seat Position", "Securing a Child Restraint in the Center Front Seat Position" or "Securing a Child Restraint in the Right Front Seat Position"in the Index for information on how to secure a child restraint in your vehicle. In order to use the LATCH system in your vehicle, you need a child restraint designed for that system. To assist you in locating the lower anchors for this child restraint system, each seating position with the LATCH system has a visible metal anchorage point in the seat where the seatback meets the seat cushion. 1-60