2008 GMC Yukon Faced with rising gas prices and eco-protests, the market for full-size SUVs has seen better times. General Motors answers the call for better fuel economy with the 2008 GMC Yukon Hybrid. Equipped with the new two-mode hybrid system, the Yukon Hybrid gets an EPA-rated 21 mpg City, matching ratings with a four-cylinder Camry...read more..watch videos...