This extended-length version of the Yukon can tow a heavy trailer and swallow more cargo than most minivans. Interior quality is very good, and there is room for up to nine occupants. The cabin is quiet, but the low third-row seat is uncomfortable. Handling is cumbersome, and the steering is vague. The 5.3-liter V8 is adequate and returned 14 mpg overall. Four-wheel-drive models have a selectable full-time system that can remain engaged at all times. Side and curtain air bags are standard.