GMC Sierra 2500 HD Crew Cab Pro 4x4 features the long bed configuration and has just 284 miles on its 6.6-liter V8 engine ...

GM has announced that it has completed the sale of its Allison Transmission business. The commercial and military transmission part of the company was sold to The Carlyle Group and Onex ...

Paired with the Allison 1000 five-speed automatic transmission, this powertrain combo made towing and hauling feel effortless. Drivers who own a 2001 Silverado 2500 HD often praise its reliability.