Explore Top Car Extended Warranty Companies For GMC Sierra 2500HD Classic

The GMC Sierra 2500HD Classic is a full-size pickup truck produced by General Motors. It was first introduced in 2006 as a heavy-duty version of the GMC Sierra light-duty truck. The Classic model is distinguished from the regular Sierra 2500HD by its higher standard towing capacity, larger payload and increased towing power. It also has higher trim levels, including the Denali trim.