Today on our 2013 GMC Terrain, we're going to be test fitting the Thule Doubletrack, a platform style 2-bike rack for 1 1/4 and 2-inch hitches, part number TH990XT. To begin our test fit, we'll slide the shank of the bike rack into the receiver tube of our hitch, line up our pinholes, thread in our anti-rattle bolt and tighten it down with a wrench. We'll then secure it with the provided clip. In… see more >