Author archives: grandteton

2015 GMC Sierra Grand Teton FOR SALE

Sheehan & GMC are proud to announce the introduction of the 2015 GMC Sierra Grand Teton . This custom conversion can only be found at Sheehan, your premium GMC Dealer.  The Grand Teton gives you all the luxury, power and class of the 2015 GMC Sierra, while adding all the extras that only the toughest & tallest can endure. Available in 1/2 & 3/4 Ton 4-Wheel Drive Models 3yr 36,000 […]