2008 GMC Sierra 2500HD

The 2008 GMC Sierra 2500HD receives minor updates including standard XM Satellite Radio on all trim levels, an available power-adjustable driver’s seat on regular cab versions with a bench seat, and two new exterior colors: Dark Crimson Metallic and Sonoma Red Metallic. Silverado 2500HDs equipped with dual rear wheels receive new standard 17-inch wheels.