Heavy-duty personified, the GMC Sierra 3500HD is ‘real steel’ when you have to get tough jobs done. Whether it is projector-beam headlamps with HID bulbs, LED signature front lighting or Available Amber Roof Marker Lamps, everything projects its image of powerful truck. Manassas, the GMC Sierra 3500HD enables you to control heavy roads with a host of features, like Stabilitrak with Hill Start Assist, Trailer Sway Control and Traction Control, front and rear park assist, and more. Despite all this, it has a very quiet cabin, owing to triple door seals that block outside noise. Joyce Koons Buick GMC, our GMC Sierra 3500HD dealership in Manassas, presents an extensive inventory of new vehicles on its lot. We look forward to seeing you soon!