The 2020 GMC Sierra Heavy Duty has been redesigned from the ground up to combine even greater capability for towing trailers with style, and has been packed with the latest technology available on heavy-duty pickup trucks in general.

In 2012 unveiled the fourth generation of the Sierra pickup truck and offered it as a 2014 model-year in a few grades and cab options, such as the two-door 2500HD, also known as the Regular Cab.

The fourth generation of the Sierra was a revolution in terms of technologies and construction methods and helped GMC to cut a big chunk from Ford's F-Series slice of the market.

GMC released the third generation of the Sierra pickup-truck range in 2006 as a 2007 model-year for the 1500 series and the 2500 HD series in the following year as a 2008 model.

General Motors released the third generation of the Sierra pickup 2500 HD series in 2007 as a 2008 model year and offered it with a choice of three cabins.

The third generation of the Sierra pickup 2500 HP showed up in 2007 as a 2008 model, and GMC built it in three cab versions.