Those headrests in your GMC Yukon XL are looking nice Robert!
Vehicle make/model: GMC Yukon XL
Vehicle year: 2001
Vehicle color: Tan interior
Post distance center to center: 6.75″ used 10mm posts.
First name and city/state: Robert, Raleigh, NC
Additional comments: Easy install I also added 2 toggle switches up front so the parents could be in charge of the power