Today on our 2012 GMC Sierra, well be test fitting the Sport Rack Escape three bike carrier, part number a30403. To begin our test fit well slide the shank of the carrier and to the opening of the hitch, line up our thread and pin holes, and thread our anti-rattle bolt through the thread and pin holes and tighten them with a wrench. Now lets go over some clearance measurements to see how the bike… see more >