The GMC Sierra 2500 2WD is a full-size pickup truck from GMC. It is built on the GMC Sierra platform and is offered in two-wheel-drive and four-wheel-drive versions. It comes with a variety of engine options, including a 5.3-liter V8 and a 6.6-liter turbo-diesel V8. The Sierra 2500 2WD is available as either a regular cab, extended cab, or crew cab. It also offers a towing capacity of up to 14,500 pounds.