2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 99

2. If the child restraint manufacturer recommends that the top tether be attached, attach and tighten the top tether to the top tether anchor (loop), if your vehicle has one. Refer to the child restraint instructions and the following steps: Example - Rear Driver's Side Position 2. 1. When using a child restraint with a top tether in the rear driver side position: A. Raise the headrest or head restraint. Example - Rear Driver's Side Position B. Route the top tether (B) between the headrest or head restraint posts, through the loop (A), behind the inboard headrest or head restraint post, and under the center shoulder belt (C). C. Attach the top tether (B) to the top tether anchor (loop) (D) at the center rear seating position. 2-57