Today, on our 2011 GMC Sierra, well be test fitting the MaxxTow Adjustable Height Ball Mount for two inch hitches with a 10 inch drop or eight inch rise, rated at 5,000 pounds, part number MT70067. Before we begin our test fit, we will firstly obtain the hitch height of our vehicle. The hitch height is the measurement from the ground to the inside top of the receiver tube. The hitch height on our… see more >