Natural gas has become a go-to fuel for power plants from coast to coast, sometimes replacing dirtier coal-fired plants and, ...

But are those changes enough to right the Sierra HD's wrongs? With the Allison 10-speed automatic borrowed from the Duramax diesel powertrain now behind it, the gas engine finally has a ...

Braking is strong, whether using the service brakes or exhaust brake. With its interior rework, the Silverado HD's cabin is a much nicer place to spend time, thanks to improved design ...