Clean CARFAX.AWD.GMC Dealership Serving Boulder, CO Drivers – Mike Maroone GMC GMC Sales, Service, and Parts in Boulder, CO If you have been longing to get into a new GMC close to Boulder, CO, then right now is an ideal opportunity to find your next auto at a low cost, here at Mike Maroone GMC. Enjoy Free Delivery anywhere in Colorado. Our GMC Truck line is headed by the Sierra 1500, 2500 and 3500, each new GMC model can be found here at our Boulder, CO dealership. Discover your new GMC in Boulder now for a test spin of your dream car.Reviews: * Simultaneous cargo- and people-carrying ability; unique visual presence; long list of standard features; gutsy V8; composed ride. Source: Edmunds * If you want to carry up to eight passengers and tow 8,300 pounds of toys with a boatload of style and amenities, the Escalade can do so with plenty of class. Source: KBB.com