The 2004 GMC Yukon Denali is the top-of-the-line version of the standard Yukon. Offered in one trim level – the four door AWD – the Yukon Denali features a 325 horsepower 6.0-liter V8 with a 4-speed overdrive-enabled automatic transmission. If it’s full-time AWD you’re after, you’ve come to the right place. Not only does the Yukon Denali operate in 24/7 AWD, it features StabiliTrak (for enhanced stability), and a computer-controlled suspension. The Yukon Denali’s list of standard equipment is lengthy, and includes dual zone climate control, OnStar and XM Radio.