Today on our 2011 GMC Acadia we will be test fitting the Saris Thelma platform-style 3-bike rack. That's part number SA4239B. This can be used for 1-1/4" or 2" hitches. We've got a 2" hitch here today so we can go ahead and begin by inserting our shank into our receiver. First thing we'll want to do is line up our pinholes. That looks pretty good.… see more >