Tip:
Highlight text to annotate it
X
Today on our 2013 GMC Yukon well be test fitting the Thule Sonic XXL rooftop cargo box measuring
22 cubic feet in metallic silver, part number TH636S. With the factory roof rack system
installed on our vehicle well begin our test fit by placing the Thule Sonic directly onto
our crossbars. As we put the box on our crossbars well adjust the feet as necessary to fit around
each crossbar. With the box situated the way we prefer we can open one side of the box
and on the inside well see some hand knobs that we can tighten to tighten our feet around
the crossbar. One of the great features of this box is its ability to open from both
sides of the vehicle. Now well move to the other side, open the box, and tighten the
two
remaining clamps.