2010 Buick Enclave Owner's Manual - Page 76

3-26 Seats and Restraints To access the comfort guide, you will first need to move the headrest forward by pulling on the handle behind the seatback. The comfort guide will now be accessible. 2. Place the guide over the belt and insert the two edges of the belt into the slots of the guide. 3. Be sure that the belt is not twisted and it lies flat. The elastic cord must be under the belt and the guide on top. Third Row Center Position Pull the comfort guide out of its storage location and then return the headrest to its upright position.