Today on our 2012 GMC Terrain, we're going to be test fitting the Thule Roof Rack System, consisting of part numbers THARB47, those are the Thule AeroBlade Road Bars, and part number TH450R, and those are the Thule Rapid Crossroad Feet. Those are what wrap around the raised side rails of your vehicle. We already have the front one installed. You can see it has a nice aerodynamic shape here with… see more >