The GMC Yukon XL 2WD is a full-size SUV manufactured by General Motors and sold under their luxury brand, GMC. The Yukon XL is an extended-length version of the standard Yukon, offering an extra 20.4 inches in length for more passenger and cargo space. It is powered by a 5.3-liter V8 engine, and is available in two-wheel drive and four-wheel drive, depending on the model.